Fluorination and its Effects on Electrocatalysts for Low‐Temperature Fuel Cells
Marian Chatenet, Sandrine Berthon‐Fabry, Yasser Ahmad, Katia Guérin, Marie Colin, Hani Farhat, Lawrence Frézet, Gaixia Zhang, Marc Dubois
Abstract
Abstract The benefits of covalent grafting of fluorine atoms onto carbonaceous materials are described for the design of new electrocatalysts for low‐temperature fuel cells. In order to obtain the best results, the fluorination conditions must be carefully chosen according to the physicochemical properties of the starting materials (specific surface area, pore size distribution, crystallinity, and doping). By describing the main fluorination routes, the article aims to help in the choice of efficient treatment conditions. The effects of fluorination on the performance of the platinum group metal (PGM)‐based catalyst and the non‐PGM‐based electrocatalyst are discussed. Finally, future research prospects and technical challenges of fluorination for fuel cells are proposed.