A routine separator modified by a Ketjen black (KB) layer on the cathode side has been investigated to improve the electrochemical performances of Li–S batteries.
A robust CoP@CNFC with enhanced electrochemical performance was synthesized via chemical bonding and demonstrates a promising potential toward an efficient K-storage.
Achieving the robust immobilization of CoP nanoparticles in cellulose nanofiber network-derived carbon via chemical bonding for a stable potassium ion storage