DICP OpenIR
Subject Area物理化学
Self-humidifiying catalyst layer in PEMFC fuel cell at low humidity
Mou ZL(缪智力); Yu HM(俞红梅); Song W(宋微); Zhan D(詹丹); Yi BL(衣宝廉)
Conference Namenternational Symposium on Electrochemistry for Energy Conversion and Storage
Conference Date2009-8-22
2009-08-22
Conference Place中国
Pages24/1
Department三室
Funding Organization武汉大学
AbstractHydrophilic nanosized SiO2 and sulfonated SiO2 particles were added to the cathode catalyst layer (CL) to improve the water wettability and the performance at low humidity of a proton exchange membrane fuel cell (PEMFC). It was found that both nanosized SiO2 and sulfonated SiO2 additive improved the hydrophilicity of the cathode CL by the contact angle measurement. Contrary to nanosized SiO2, sulfonated SiO2 improved the conductivity of the cathode CL. Since the sulfonic groups in sulfonated SiO2 improved the proton conductivity of the cathode CL, the cell with sulfonated SiO2 showed better performance at low humidity. The appropriate sulfonated SiO2 content in the catalyst layer was also investigated. Furthermore, the catalyst layer with sulfonated SiO2 was tested at subzero temperature to improve the fuel cell cold startup capability.
Language中文
Document Type会议论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/113790
Collection中国科学院大连化学物理研究所
Corresponding AuthorYu HM(俞红梅)
Recommended Citation
GB/T 7714
Mou ZL,Yu HM,Song W,et al. Self-humidifiying catalyst layer in PEMFC fuel cell at low humidity[C],2009:24/1.
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