Preparation and evaluation of activated carbon supported catalysts derived waste materials for hybrid type Na-air battery

Abstract

Recently carbon supported catalysts (CSCs) have often been used to reduce the amount of noble metal catalyst required for improving the electrochemical performances of Na-air batteries (NABs). Herein, we successfully demonstrate a biomass-based CSC for hybrid-type NABs prepared via hydrothermal activation. The fabricated CSCs exhibited amorphous and disordered structure, and CSC-II based hybrid type NAB showed high specific discharge capacity of 799.85 mAh g−1, which is an equivalent to 95.5% of theoretical values. Furthermore, the N-doped CSC-II based battery exhibited improved performance related to carbon corrosion.