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

• DOI: 10.1016/j.apsusc.2020.148817
• Publication Date: 2020-12-24T21:42:40Z
• Authors: Liangqi Gui; Guohong Pan; Xing Ma; Maosheng You; Beibei He; Zhihong Yang; Jian Sun; Wei Zhou; Jianmei Xu; Ling Zhao
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

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.