Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction
For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a large...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhang, Xiaojuan [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method - Xiao, Hong ELSEVIER, 2013, the international journal on the science and technology of electrochemical energy systems, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:434 ; year:2019 ; day:15 ; month:09 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.jpowsour.2019.05.076 |
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ELV047358815 |
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| 245 | 1 | 0 | |a Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction |
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| 520 | |a For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. | ||
| 520 | |a For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. | ||
| 650 | 7 | |a Electrocatalysis |2 Elsevier | |
| 650 | 7 | |a Cobalt hexacyanoferrate |2 Elsevier | |
| 650 | 7 | |a Carbon nanotubes |2 Elsevier | |
| 650 | 7 | |a Oxygen evolution reaction |2 Elsevier | |
| 650 | 7 | |a Globular clusters |2 Elsevier | |
| 700 | 1 | |a Yu, Bo |4 oth | |
| 700 | 1 | |a Wang, Xinqiang |4 oth | |
| 700 | 1 | |a Yang, Dongxu |4 oth | |
| 700 | 1 | |a Chen, Yuanfu |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Xiao, Hong ELSEVIER |t Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method |d 2013 |d the international journal on the science and technology of electrochemical energy systems |g New York, NY [u.a.] |w (DE-627)ELV00098745X |
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10.1016/j.jpowsour.2019.05.076 doi GBV00000000000690.pica (DE-627)ELV047358815 (ELSEVIER)S0378-7753(19)30641-X DE-627 ger DE-627 rakwb eng 690 VZ 50.92 bkl Zhang, Xiaojuan verfasserin aut Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. Electrocatalysis Elsevier Cobalt hexacyanoferrate Elsevier Carbon nanotubes Elsevier Oxygen evolution reaction Elsevier Globular clusters Elsevier Yu, Bo oth Wang, Xinqiang oth Yang, Dongxu oth Chen, Yuanfu oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:434 year:2019 day:15 month:09 pages:0 https://doi.org/10.1016/j.jpowsour.2019.05.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 434 2019 15 0915 0 |
| spelling |
10.1016/j.jpowsour.2019.05.076 doi GBV00000000000690.pica (DE-627)ELV047358815 (ELSEVIER)S0378-7753(19)30641-X DE-627 ger DE-627 rakwb eng 690 VZ 50.92 bkl Zhang, Xiaojuan verfasserin aut Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. Electrocatalysis Elsevier Cobalt hexacyanoferrate Elsevier Carbon nanotubes Elsevier Oxygen evolution reaction Elsevier Globular clusters Elsevier Yu, Bo oth Wang, Xinqiang oth Yang, Dongxu oth Chen, Yuanfu oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:434 year:2019 day:15 month:09 pages:0 https://doi.org/10.1016/j.jpowsour.2019.05.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 434 2019 15 0915 0 |
| allfields_unstemmed |
10.1016/j.jpowsour.2019.05.076 doi GBV00000000000690.pica (DE-627)ELV047358815 (ELSEVIER)S0378-7753(19)30641-X DE-627 ger DE-627 rakwb eng 690 VZ 50.92 bkl Zhang, Xiaojuan verfasserin aut Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. Electrocatalysis Elsevier Cobalt hexacyanoferrate Elsevier Carbon nanotubes Elsevier Oxygen evolution reaction Elsevier Globular clusters Elsevier Yu, Bo oth Wang, Xinqiang oth Yang, Dongxu oth Chen, Yuanfu oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:434 year:2019 day:15 month:09 pages:0 https://doi.org/10.1016/j.jpowsour.2019.05.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 434 2019 15 0915 0 |
| allfieldsGer |
10.1016/j.jpowsour.2019.05.076 doi GBV00000000000690.pica (DE-627)ELV047358815 (ELSEVIER)S0378-7753(19)30641-X DE-627 ger DE-627 rakwb eng 690 VZ 50.92 bkl Zhang, Xiaojuan verfasserin aut Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. Electrocatalysis Elsevier Cobalt hexacyanoferrate Elsevier Carbon nanotubes Elsevier Oxygen evolution reaction Elsevier Globular clusters Elsevier Yu, Bo oth Wang, Xinqiang oth Yang, Dongxu oth Chen, Yuanfu oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:434 year:2019 day:15 month:09 pages:0 https://doi.org/10.1016/j.jpowsour.2019.05.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 434 2019 15 0915 0 |
| allfieldsSound |
10.1016/j.jpowsour.2019.05.076 doi GBV00000000000690.pica (DE-627)ELV047358815 (ELSEVIER)S0378-7753(19)30641-X DE-627 ger DE-627 rakwb eng 690 VZ 50.92 bkl Zhang, Xiaojuan verfasserin aut Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. Electrocatalysis Elsevier Cobalt hexacyanoferrate Elsevier Carbon nanotubes Elsevier Oxygen evolution reaction Elsevier Globular clusters Elsevier Yu, Bo oth Wang, Xinqiang oth Yang, Dongxu oth Chen, Yuanfu oth Enthalten in Elsevier Xiao, Hong ELSEVIER Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method 2013 the international journal on the science and technology of electrochemical energy systems New York, NY [u.a.] (DE-627)ELV00098745X volume:434 year:2019 day:15 month:09 pages:0 https://doi.org/10.1016/j.jpowsour.2019.05.076 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.92 Meerestechnik VZ AR 434 2019 15 0915 0 |
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Enthalten in Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method New York, NY [u.a.] volume:434 year:2019 day:15 month:09 pages:0 |
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Zhang, Xiaojuan |
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Zhang, Xiaojuan ddc 690 bkl 50.92 Elsevier Electrocatalysis Elsevier Cobalt hexacyanoferrate Elsevier Carbon nanotubes Elsevier Oxygen evolution reaction Elsevier Globular clusters Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction |
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Numerical modeling of wave–current forces acting on horizontal cylinder of marine structures by VOF method |
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self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction |
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Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction |
| abstract |
For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. |
| abstractGer |
For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. |
| abstract_unstemmed |
For the first time, a novel of self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes electrocatalyst has been synthesized by a facile one-pot chemical co-precipitation method. Compared to bare cobalt hexacyanoferrate with higher onset overpotential of 296 mV vs. RHE, a larger Tafel slope of 107.27 mV dec−1 and higher overpotential of 411 mV at 10 mA cm−2 for OER, the optimized cobalt hexacyanoferrate/carbon nanotubes hybrid exhibits a much lower Tafel slope of 62.43 mV dec−1 and smaller onset overpotential of 152 mV, and its overpotential at 10 mA cm−2 is only 274 mV. Most importantly, at a fixed overpotential of 400 mV, cobalt hexacyanoferrate/carbon nanotubes hybrid with 20 mg carbon nanotubes delivers a large current density of 95.02 mA cm−2, which is over ten times than that of bare cobalt hexacyanoferrate (8.52 mA cm−2). The dramatically enhanced OER performances are mainly assigned to the unique globular clusters-like structure and the good synergistic effect between cobalt hexacyanoferrate nanoparticles and highly conductive carbon nanotubes skeleton, leading to producing the higher electrochemical active surface area and much lower impedance. This work provides a simple strategy to rationally design and synthesize transition metal hexacyanoferrate-based catalysts as highly efficient nonprecious electrocatalysts for OER. |
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Self-assembled globular clusters-like cobalt hexacyanoferrate/carbon nanotubes hybrid as efficient nonprecious electrocatalyst for oxygen evolution reaction |
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