Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution
Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, th...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhao, Meiqin [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016transfer abstract |
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| Schlagwörter: |
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| Umfang: |
9 |
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| Übergeordnetes Werk: |
Enthalten in: External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs - Dedhia, Kavita ELSEVIER, 2018, official journal of the International Association for Hydrogen Energy, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:41 ; year:2016 ; number:45 ; day:7 ; month:12 ; pages:20485-20493 ; extent:9 |
| Links: |
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| DOI / URN: |
10.1016/j.ijhydene.2016.09.080 |
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| 520 | |a Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. | ||
| 520 | |a Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. | ||
| 650 | 7 | |a CeO2 particle |2 Elsevier | |
| 650 | 7 | |a Ni–S/CeO2 |2 Elsevier | |
| 650 | 7 | |a Composite materials |2 Elsevier | |
| 650 | 7 | |a Hydrogen evolution reaction |2 Elsevier | |
| 700 | 1 | |a Dong, Haifeng |4 oth | |
| 700 | 1 | |a Chen, Zhouhao |4 oth | |
| 700 | 1 | |a Ma, Zhipeng |4 oth | |
| 700 | 1 | |a Wang, Lixin |4 oth | |
| 700 | 1 | |a Wang, Guiling |4 oth | |
| 700 | 1 | |a Yang, Wang |4 oth | |
| 700 | 1 | |a Shao, Guangjie |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Dedhia, Kavita ELSEVIER |t External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |d 2018 |d official journal of the International Association for Hydrogen Energy |g New York, NY [u.a.] |w (DE-627)ELV000127019 |
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10.1016/j.ijhydene.2016.09.080 doi GBVA2016012000026.pica (DE-627)ELV014141698 (ELSEVIER)S0360-3199(16)32787-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Zhao, Meiqin verfasserin aut Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution 2016transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. CeO2 particle Elsevier Ni–S/CeO2 Elsevier Composite materials Elsevier Hydrogen evolution reaction Elsevier Dong, Haifeng oth Chen, Zhouhao oth Ma, Zhipeng oth Wang, Lixin oth Wang, Guiling oth Yang, Wang oth Shao, Guangjie oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 https://doi.org/10.1016/j.ijhydene.2016.09.080 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 41 2016 45 7 1207 20485-20493 9 045F 660 |
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10.1016/j.ijhydene.2016.09.080 doi GBVA2016012000026.pica (DE-627)ELV014141698 (ELSEVIER)S0360-3199(16)32787-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Zhao, Meiqin verfasserin aut Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution 2016transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. CeO2 particle Elsevier Ni–S/CeO2 Elsevier Composite materials Elsevier Hydrogen evolution reaction Elsevier Dong, Haifeng oth Chen, Zhouhao oth Ma, Zhipeng oth Wang, Lixin oth Wang, Guiling oth Yang, Wang oth Shao, Guangjie oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 https://doi.org/10.1016/j.ijhydene.2016.09.080 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 41 2016 45 7 1207 20485-20493 9 045F 660 |
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10.1016/j.ijhydene.2016.09.080 doi GBVA2016012000026.pica (DE-627)ELV014141698 (ELSEVIER)S0360-3199(16)32787-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Zhao, Meiqin verfasserin aut Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution 2016transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. CeO2 particle Elsevier Ni–S/CeO2 Elsevier Composite materials Elsevier Hydrogen evolution reaction Elsevier Dong, Haifeng oth Chen, Zhouhao oth Ma, Zhipeng oth Wang, Lixin oth Wang, Guiling oth Yang, Wang oth Shao, Guangjie oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 https://doi.org/10.1016/j.ijhydene.2016.09.080 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 41 2016 45 7 1207 20485-20493 9 045F 660 |
| allfieldsGer |
10.1016/j.ijhydene.2016.09.080 doi GBVA2016012000026.pica (DE-627)ELV014141698 (ELSEVIER)S0360-3199(16)32787-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Zhao, Meiqin verfasserin aut Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution 2016transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. CeO2 particle Elsevier Ni–S/CeO2 Elsevier Composite materials Elsevier Hydrogen evolution reaction Elsevier Dong, Haifeng oth Chen, Zhouhao oth Ma, Zhipeng oth Wang, Lixin oth Wang, Guiling oth Yang, Wang oth Shao, Guangjie oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 https://doi.org/10.1016/j.ijhydene.2016.09.080 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 41 2016 45 7 1207 20485-20493 9 045F 660 |
| allfieldsSound |
10.1016/j.ijhydene.2016.09.080 doi GBVA2016012000026.pica (DE-627)ELV014141698 (ELSEVIER)S0360-3199(16)32787-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Zhao, Meiqin verfasserin aut Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution 2016transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. CeO2 particle Elsevier Ni–S/CeO2 Elsevier Composite materials Elsevier Hydrogen evolution reaction Elsevier Dong, Haifeng oth Chen, Zhouhao oth Ma, Zhipeng oth Wang, Lixin oth Wang, Guiling oth Yang, Wang oth Shao, Guangjie oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 https://doi.org/10.1016/j.ijhydene.2016.09.080 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 41 2016 45 7 1207 20485-20493 9 045F 660 |
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Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 |
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Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:41 year:2016 number:45 day:7 month:12 pages:20485-20493 extent:9 |
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External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |
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Study of Ni–S/CeO2 composite material for hydrogen evolution reaction in alkaline solution |
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Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. |
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Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. |
| abstract_unstemmed |
Ni–S/CeO2 composite materials for hydrogen evolution reaction (HER) have been prepared by an electrodeposition method under supergravity field from nickel sulfamate. With the different mass concentrations of CeO2, the morphology and X-ray diffraction patterns of Ni–S/CeO2 are diverse. Apparently, the CeO2 contents of Ni–S/CeO2 composite electrodes under supergravity fields are higher than that under normal gravity field. In addition, the HER catalytic activity of Ni–S/CeO2 composite electrodes can be measured in 1.0 M NaOH at 298 K. The results show that overpotential of Ni–S/CeO2 electrode of 7 g/L CeO2 under 3000 rpm is the least, suggesting perhaps too much content of CeO2 hinder the desorption of Hads, or too little CeO2 can not play palpable roles in improving the catalytic activity and increasing oxygen vacancies. And the exchange current density j0 value of Ni–S/CeO2 composite electrode prepared under the speed of 3000 rpm, which is 1.16 times larger than the Ni–S/CeO2 of 0 g/L CeO2, is 1.9 times higher than that under normal gravity field. EIS results suggest that there exists a synergetic effect on HER between CeO2 and Ni–S alloy matrix. |
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