Electronic Promoter Breaks the Linear Scaling Relationship: Ultra-Rapid High-Temperature Synthesis of Heterostructured CoS/SnO@C as a Bifunctional Oxygen Catalyst for Li-O Batteries.

Li-O batteries urgently needs high discharge capacity and stable cycling performance, requiring effective and reliable bifunctional catalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Herein, Hovenia acerba Lindl-like heterostructure composed of cobalt sulfide and tin dioxide supported on carbon substrate (CoS/SnO@C) is prepared via CO laser irradiation technology. The half-wave potential of CoS/SnO@C for the ORR is 0.