In-situ exsolution of CoNi alloy nanoparticles on LiFe_(0.8)Co_(0.1)Ni_(0.1)O_2 parent:New opportunity for boosting oxygen evolution and reduction reaction

摘要

Oxygen electrocatalysis is an efficient and environmentally friendly electrochemical approach serving for various sustainable energy storage and conversion devices. Rational design of integrated electrocatalysts is emerging as a promising and challenging strategy to drive oxygen evolution and reduction reactions (OER and ORR). Herein, CoNi alloy nanoparticles exsolved on LiFe0.8Co0.1Ni0.1O2 (LFCN) parent with strong coupling is proposed as a bifunctional electrocatalyst for OER and ORR. Thanks to the synergetic interplay of exsolved CoNi and LFCN parent as well as the increased surface oxygen defects, such CoNi-LFCN electrocatalyst demonstrates high bifunctional activity and good durability to catalyze OER and ORR in alkaline media. This protocol discloses an in-situ exsolution strategy to design hybrid electrocatalysts for OER, ORR, and other electrocatalytic reactions.