Abstract
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.
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