文献类型：期刊文献

英文题名：Lattice Oxygen Mechanism in Distorted 2D-MoO3 for Lithium-Oxygen Batteries

作者：Qiu, Jinkai[1];Li, Jingkun[1];Han, Xia[1];Liu, Honglai[1];Lian, Cheng[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, State Key Lab Chem Engn & Low Carbon Technol, Shanghai 200237, Peoples R China

年份：2025

卷号：17

期号：19

外文期刊名：CHEMCATCHEM

收录：;EI(收录号：20253218936433);WOS:【SCI-EXPANDED(收录号:WOS:001543101400001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 22278127) and the Shanghai Pilot Program for Basic Research (22T01400100-18). The authors thank Jiahui Li for helpful guidance and constructive comments during the preparation of this manuscript.

语种：英文

外文关键词：2D-MoO3; Geometric distortion; Lattice oxygen mechanism; Lithium-oxygen batteries; Single-atom doping

摘要：Lithium-oxygen batteries with ultra-high theoretical energy density are considered promising candidates for next-generation energy storage systems, yet they encounter practical challenges such as high overpotential and poor cycle stability. 2D metal oxides demonstrate promising catalytic performance in lithium-oxygen batteries with high specific surface area. However, the inherent wide bandgaps of 2D metal oxides and the limited microscopic understanding of catalytic processes impede the development of efficient catalyst. Herein, we successfully narrow the bandgap of 2D-MoO3 by transition metal single-atom doping and unveil the correlation between the electronic property and the geometric distortion caused by the Jahn-Teller effect. Importantly, the lattice oxygen mechanism in lithium-oxygen batteries is first proposed based on the enhanced activity of lattice oxygen on the surface of doped 2D-MoO3. Our findings offer novel insights into catalyst design for lithium-oxygen batteries, deepen the fundamental understanding of catalytic reaction mechanisms, and pave the way for further exploration in energy storage technology.