By coupling a Pt-catalyzed fluorogenic reaction with the Pt-electrocatalyzed hydrogen-oxidation reaction (HOR), we combine single-molecule fluorescence microscopy with traditional electrochemical methods to study the real-time deactivation kinetics of a Pt/C electrocatalyst at single-particle level during electrocatalytic hydrogen-oxidation reaction. The decay of the catalytic performance of Pt/C could be mainly attributed to the electrocatalysis-induced etching or dissolution of Pt nanoparticles. Spontaneous regeneration of activity and incubation period of the Pt electrocatalyst were also observed at single-particle level. All these new insights are practically useful for the understanding and rational design of highly efficient electrocatalysts for application in fuel cells.

http://onlinelibrary.wiley.com/doi/10.1002/anie.201511071/full

中文报道（燃料电池电催化剂失活过程的单分子单纳米粒子研究）链接：
http://mp.weixin.qq.com/s?__biz=MzAwOTExNzg4Nw==&mid=2657559627&idx=5&sn=f684a84f90855643cd2c3aed2ba2c799&scene=0#wechat_redirect