The limited durability of metal-nitrogen-carbon electrocatalysts hinders their use in proton exchange membrane fuel cells for the oxygen reduction reaction. Here the authors transform active sites from FeN4 to stable monosymmetric FeN2 + N’2 via chemical vapor modification, resulting in enhanced improving the durability of the catalyst.
- Jingsen Bai
- Tuo Zhao
- Wei Xing
