前期发现和证实在燃料电池系统从待机到怠速的工况盲区存在微电流运行使性能回升的现象，为揭示这种性能恢复现象的发生机理，掌握和利用其激发条件，将围绕燃料电池膜电极组件开展研究。 .重点研究微电流工况长时间运行前后，燃料电池膜电极的催化剂活性面积、阻抗、氢渗透率、双电层电容、各片膜电极一致性等的变化规律，研究操作电流和端电压的耦合机制，研究进气湿度和压力的影响规律。拟解决的科学问题是燃料电池性能恢复的激发因素、作用机制和条件范围。主要创新点是利用本团队新研究完成的燃料电池堆多片膜电极多参数同步检测方法（恒流充电测试法），首次对燃料电池性能恢复现象开展机理研究。.本项目的研究，将揭示出燃料电池性能恢复的内在机理，准确把握实现性能恢复的科学条件，从而丰富燃料电池理论、发展燃料电池技术，为解决汽车燃料电池寿命不足的重大问题做出贡献。预期可发表至少4篇被SCI、EI双收录论文。

It is already discovered and confirmed that the performance of proton exchange membrane fuel cell recovered after operating on the micro-current condition between ready mode to idle condition by our project team. In order to reveal the recovery mechanism, to master and use of its excitation condition, we will focus on the research of the fuel cell membrane electrode assenbly (MEA) that affect directly its performance. .This paper focuses on the rules of changes in active area of catalyst, impedance, hydrogen crossover and double layer capacitance of the MEA, and the changes in performance uniformity of the MEAs before and after the long-operating of the micro-current condition, and focuses on the mechanism of combining voltage and current, and the influence of humidity and presure of the intake gas. This study emphasized the scientific issue of the influencing factors, the mechanism of action and the applicable range of conditions about the fuel cell "recovery". It is innovative that using our group's new research results about fule cell MEA status measurement method（constant current charge test method） to this program of the mechanism of fuel cell "recovery" phenomenon. .The achievements of this program will reveal clearly the fuel cell recovery mechanism and the scientific conditions of the "recovery" occured, and then make a contribution to the fuel cell theory and technology, and supply method to prolong lifretime of automotive fuel cells. It's predicted that the research will product no less than 4 papers indexed by SCI and EI.