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An Efficient Trifunctional Spinel-Based Electrode for Oxygen Reduction/Evolution Reactions and Nonoxidative Ethane Dehydrogenation on Protonic Ceramic Electrochemical Cells.
Xu, Yangsen; Zhang, Hua; Xu, Kang; Zhang, Xirui; Zhu, Feng; Deng, Wanqing; He, Fan; Liu, Ying; Chen, Yu.
Afiliación
  • Xu Y; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • Zhang H; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • Xu K; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • Zhang X; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • Zhu F; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • Deng W; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • He F; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
  • Liu Y; Research Institute of Renewable Energy and Advanced Materials, Zijin Mining Group Co., Ltd., Xiamen, Fujian, 361101, China.
  • Chen Y; School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
Adv Mater ; 36(40): e2408044, 2024 Oct.
Article en En | MEDLINE | ID: mdl-39194395
ABSTRACT
Protonic ceramic electrochemical cells (PCECs) have received considerable attention as they can directly generate electricity and/or produce chemicals. Development of the electrodes with the trifunctionalities of oxygen reduction/evolution and nonoxidative ethane dehydrogenation is yet challenging. Here these findings are reported in the design of trifunctional electrodes for PCECs with a detailed composition of Mn0.9Cs0.1Co2O4-δ (MCCO) and Co3O4 (CO) (MCCO-CO, 82 mass ratio). At 600 °C, the MCCO-CO electrode exhibits a low area-specific resistance of 0.382 Ω cm2 and reasonable stability for ≈105 h with no obvious degradation. The single cell with the MCCO-CO electrode shows an encouraging peak power density of 1.73 W cm-2 in the fuel cell (FC) mode and a current density of -3.93 A cm-2 at 1.3 V in the electrolysis cell (EC) mode at 700 °C. Moreover, the MCCO-CO cell displays promising operational stability in FC mode (223 h), EC mode (209 h), and reversible cycling stability (52 cycles, 208 h) at 650 °C. The MCCO-CO single cell shows an encouraging ethane conversion to ethylene (with a conversion of 40.3% and selectivity of 94%) and excellent H2 production rates of 4.65 mL min-1 cm-2 at 1.5 V and 700 °C, respectively, with reasonable Faradaic efficiencies.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania