Performance enhancement and degradation mechanism identification of a single-atom Co–N–C catalyst for proton exchange membrane fuel cells

Xiaohong Xie, Cheng He, Boyang Li, Yanghua He, David A. Cullen, Evan C. Wegener, A. Jeremy Kropf, Ulises Martinez, Yingwen Cheng, Mark Engelhard, Mark Bowden, Miao Song, Teresa Lemmon, Xiaohong S. Li, Zimin Nie, Jian Liu, Deborah J. Myers, Piotr Zelenay, Guofeng Wang, Gang Wu, Vijay Ramani, Yuyan Shao