Bidirectional manipulation of iodine redox kinetics in aqueous Fe-I₂ electrochemistry.

ABSTRACT: Catalyzing conversion is a promising approach to unlock the theoretical potentials of the I₂/I^- redox couple in aqueous Fe-I₂ electrochemistry. However, most reported results only obtain one-directional efficient iodine conversion and cannot realize a balance of full reduction and reoxidation, thereby resulting in rapid capacity decay and/or low coulombic efficiency. Herein, the concept of bidirectional catalysis based on a core-shell structured composite cathode design, which accelerates the formation and the decomposition of FeI₂ simultaneously during battery dynamic cycling, is proposed to regulate the Fe-I₂ electrochemical reactions. Notably, the functional matrix integrates N, P co-doping and FeP nanocrystals into a carbon shell t

SUBMITTER: Zhang W 

PROVIDER: S-EPMC10646974 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature