Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells
Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activit...
Ausführliche Beschreibung
Autor*in: |
Zhou, Yingjie [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2022transfer abstract |
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Übergeordnetes Werk: |
Enthalten in: Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch - Zhang, Lei ELSEVIER, 2018, the journal of the International Society of Electrochemistry (ISE), New York, NY [u.a.] |
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Übergeordnetes Werk: |
volume:419 ; year:2022 ; day:1 ; month:07 ; pages:0 |
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DOI / URN: |
10.1016/j.electacta.2022.140434 |
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520 | |a Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. | ||
520 | |a Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. | ||
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10.1016/j.electacta.2022.140434 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001767.pica (DE-627)ELV057646546 (ELSEVIER)S0013-4686(22)00596-5 DE-627 ger DE-627 rakwb eng 610 VZ 44.00 bkl Zhou, Yingjie verfasserin aut Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Wei, Feifan oth Wu, Haihua oth Enthalten in Elsevier Zhang, Lei ELSEVIER Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch 2018 the journal of the International Society of Electrochemistry (ISE) New York, NY [u.a.] (DE-627)ELV001212419 volume:419 year:2022 day:1 month:07 pages:0 https://doi.org/10.1016/j.electacta.2022.140434 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.00 Medizin: Allgemeines VZ AR 419 2022 1 0701 0 |
spelling |
10.1016/j.electacta.2022.140434 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001767.pica (DE-627)ELV057646546 (ELSEVIER)S0013-4686(22)00596-5 DE-627 ger DE-627 rakwb eng 610 VZ 44.00 bkl Zhou, Yingjie verfasserin aut Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Wei, Feifan oth Wu, Haihua oth Enthalten in Elsevier Zhang, Lei ELSEVIER Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch 2018 the journal of the International Society of Electrochemistry (ISE) New York, NY [u.a.] (DE-627)ELV001212419 volume:419 year:2022 day:1 month:07 pages:0 https://doi.org/10.1016/j.electacta.2022.140434 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.00 Medizin: Allgemeines VZ AR 419 2022 1 0701 0 |
allfields_unstemmed |
10.1016/j.electacta.2022.140434 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001767.pica (DE-627)ELV057646546 (ELSEVIER)S0013-4686(22)00596-5 DE-627 ger DE-627 rakwb eng 610 VZ 44.00 bkl Zhou, Yingjie verfasserin aut Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Wei, Feifan oth Wu, Haihua oth Enthalten in Elsevier Zhang, Lei ELSEVIER Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch 2018 the journal of the International Society of Electrochemistry (ISE) New York, NY [u.a.] (DE-627)ELV001212419 volume:419 year:2022 day:1 month:07 pages:0 https://doi.org/10.1016/j.electacta.2022.140434 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.00 Medizin: Allgemeines VZ AR 419 2022 1 0701 0 |
allfieldsGer |
10.1016/j.electacta.2022.140434 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001767.pica (DE-627)ELV057646546 (ELSEVIER)S0013-4686(22)00596-5 DE-627 ger DE-627 rakwb eng 610 VZ 44.00 bkl Zhou, Yingjie verfasserin aut Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Wei, Feifan oth Wu, Haihua oth Enthalten in Elsevier Zhang, Lei ELSEVIER Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch 2018 the journal of the International Society of Electrochemistry (ISE) New York, NY [u.a.] (DE-627)ELV001212419 volume:419 year:2022 day:1 month:07 pages:0 https://doi.org/10.1016/j.electacta.2022.140434 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.00 Medizin: Allgemeines VZ AR 419 2022 1 0701 0 |
allfieldsSound |
10.1016/j.electacta.2022.140434 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001767.pica (DE-627)ELV057646546 (ELSEVIER)S0013-4686(22)00596-5 DE-627 ger DE-627 rakwb eng 610 VZ 44.00 bkl Zhou, Yingjie verfasserin aut Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. Wei, Feifan oth Wu, Haihua oth Enthalten in Elsevier Zhang, Lei ELSEVIER Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch 2018 the journal of the International Society of Electrochemistry (ISE) New York, NY [u.a.] (DE-627)ELV001212419 volume:419 year:2022 day:1 month:07 pages:0 https://doi.org/10.1016/j.electacta.2022.140434 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.00 Medizin: Allgemeines VZ AR 419 2022 1 0701 0 |
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Enthalten in Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch New York, NY [u.a.] volume:419 year:2022 day:1 month:07 pages:0 |
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Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. 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The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. 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Computed tomographic morphometric analysis of lateral inclination C1 pedicle screw for atlantoaxial instability patients with a narrow C1 posterior arch |
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fe-decorated on sm-doped ceo2 as cathodes for high-temperature co2 electrolysis in solid oxide electrolysis cells |
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Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells |
abstract |
Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. |
abstractGer |
Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. |
abstract_unstemmed |
Electrocatalytic CO2 reduction in solid oxide electrolysis cells (SOECs) can simultaneously convert CO2 to valuable chemicals or fuels by integrating with renewable energy so as to alleviate the greenhouse effects and energy crisis. Cerium oxide (CeO2) with high redox stability and catalytic activity toward CO2 reduction is considered a promising SOEC cathode. However, CeO2 is rarely directly employed as cathodes due to its unsatisfactory electrical properties. Suitable modification of CeO2 becomes essential to improve its electrocatalytic activity. Herein, Fe-decorated on Sm-doped CeO2 via a simple mechanical milling process was employed as cathodes for high-temperature CO2 electrolysis in SOEC. The addition of Fe species on Sm-doped CeO2 can greatly enhance the CO2 electrolysis efficiency, mainly attributing to the increased catalytic active sites, electronic pairs, and oxygen vacancy concentrations, which facilitated the CO2 adsorption and dissociation as well as the electron-ion transportation. The 1.0 wt.% Fe-decoreated on Sm-doped CeO2 showed the highest current density of 0.57 A cm−2 at 1.9 V under 800 °C. Moreover, the co-existence of doped and surface coated Fe species on Sm-doped CeO2 with moderate oxygen vacancies and adequate electronic transportation paths facilitate the high-temperature CO2 electrolysis. |
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title_short |
Fe-decorated on Sm-doped CeO2 as cathodes for high-temperature CO2 electrolysis in solid oxide electrolysis cells |
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https://doi.org/10.1016/j.electacta.2022.140434 |
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