电池2025，Vol.55Issue(6)：1263-1269,7.DOI:10.19535/j.1001-1579.2025.06.007
大功率燃料电池电堆恢复性活化阻抗分析
Impedance analysis of recovery activation for high-power fuel cell stack
摘要
Abstract
In order to investigate the recovery activation process of high-power proton exchange membrane fuel cell(PEMFC)stacks,the electrochemical impedance spectroscopy(EIS)and the distribution of relaxation times(DRT)method are used to systematically analyze the kinetic polarization processes at different activation stages.The impedance spectra of the stack under low,medium and high current densities are investigated,the activation effects are quantitatively analyzed using the DRT method.The impedance spectrum of the stack is primarily composed of four characteristic time constant segments,corresponding to proton transport in the catalyst layer ionomer,anode polarization processes,charge transfer,and oxygen mass transport,respectively.The impedance spectrum under a low current density of 200 mA/cm2 characterizes the activation performance of the stack.After recovery activation,the charge transfer resistance and oxygen mass transport resistance decrease by 40％and 15％,respectively.关键词
大功率燃料电池/电化学阻抗谱(EIS)/弛豫时间分布(DRT)/恢复性活化Key words
high-power fuel cell/electrochemical impedance spectroscopy(EIS)/distribution of relaxation times(DRT)/recovery activation分类
信息技术与安全科学引用本文复制引用
涂文特,石伟玉..大功率燃料电池电堆恢复性活化阻抗分析[J].电池,2025,55(6):1263-1269,7.基金项目
国家重点研发计划(2023YFB4005603) （2023YFB4005603）
