Enhanced Performance of Aprotic Electrolyte Li-O_2 Batteries with SnS_2-SnO_2/C Heterostructure as Efficient Cathode Catalyst

摘要

In this work, few-layer structured graphene-like im -SnS_(2)–SnO_(2)/C materials were synthesized successfully with a facile hydrothermal reaction followed by heat treatment in an Ar atmosphere. In these materials, a SnS_(2)–SnO_(2) heterostructure modified with a carbon coating (SnS_(2)–SnO_(2)/C) has been fabricated, and their electrochemical performance as a cathode catalyst for aprotic electrolyte Li–O_(2) batteries was evaluated and comparatively investigated. It was shown that the battery with 225-SnS_(2)–SnO_(2)/C in the cathode delivers the best performance. This work added a new promising index to the dictionary for developing high-performance cathode catalysts of Li–O_(2) batteries.