In-situ exsolution of CoNi alloy nanoparticles on LiFe0.8Co0.1Ni0.1O2 parent: New opportunity for boosting oxygen evolution and reduction reaction

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.

Automated summary

The CoNi alloy nanoparticles exsolved on LiFe0.8Co0.1Ni0.1O2 parent with strong coupling serve as a bifunctional electrocatalyst for oxygen evolution and reduction reactions. The synergistic interplay and increased surface oxygen defects contribute to the high activity and durability of this electrocatalyst in alkaline media. This protocol introduces an in-situ exsolution strategy for designing hybrid electrocatalysts for various electrocatalytic reactions.