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Dual-Proton Conductor for Fuel Cells with Flexible Operational Temperature.
Li, Wen; Liu, Wen; Jia, Wendi; Zhang, Jin; Zhang, Qi; Zhang, Zhenguo; Zhang, Jialin; Li, Yunqi; Liu, Yiyang; Wang, Haining; Xiang, Yan; Lu, Shanfu.
Afiliación
  • Li W; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Liu W; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Jia W; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Zhang J; State Power Investment Corporation Hydrogen Energy Company, Co., Ltd., Beijing, 102600, P. R. China.
  • Zhang Q; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Zhang Z; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Zhang J; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Li Y; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Liu Y; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Wang H; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Xiang Y; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
  • Lu S; Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Energy and Power Engineering, Beihang University, Beijing, 100191, P. R. China.
Adv Mater ; 36(14): e2310584, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38160326
ABSTRACT
The properties of proton conductors determine the operating temperature range of fuel cells. Typically, phosphoric acid (PA) proton conductors exhibit excellent proton conductivity owing to their high proton dissociation and self-diffusion abilities. However, at low temperatures or high current densities, water-induced PA loss causes rapid degradation of cell performance. Maintaining efficient and stable proton conductivity within a flexible temperature range can significantly reduce the start-up temperature of PA-doped proton exchange membrane fuel cells. In this study, a dual-proton conductor composed of an organic phosphonic acid (ethylenediamine tetramethylene phosphonic acid, EDTMPA) and an inorganic PA is developed for proton exchange membranes. The proposed dual-proton conductor can operate within a flexible temperature range of 80-160 °C, benefiting from the strong interaction between EDTMPA and PA, and the enhanced proton dissociation. Fuel cells with the EDTMPA-PA dual-proton conductor showed excellent cell stability at 80 °C. In particular, under the high current density of 1.5 A cm-2 at 160 °C, the voltage decay rate of the fuel cell with the dual-proton conductor is one-thousandth of that of the fuel cell with PA-only proton conductor, indicating excellent stability.
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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 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 Pais de publicación: Alemania