Constructed Mott-Schottky Heterostructure Catalyst to Trigger Interface Disturbance and Manipulate Redox Kinetics in Li-O_(2) Battery  

作　　者：Yongji Xia Le Wang Guiyang Gao Tianle Mao Zhenjia Wang Xuefeng Jin Zheyu Hong Jiajia Han Dong-Liang Peng Guanghui Yue 

机构地区：[1]State Key Lab of Physical Chemistry of Solid Surface,Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials,College of Materials,Xiamen University,Xiamen 361005,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第12期42-58,共17页纳微快报（英文版）

基　　金：the financial support from the National Natural Science Foundation of China (grant nos. 51971184 and 51931006);the Natural Science Foundation of Fujian Province of China (no. 2023J01033);the Fundamental Research Funds for the Central Universities of China (Xiamen University: no. 20 720 200 068);the “Double First Class” Foundation of Materials Intelligent Manufacturing Discipline of Xiamen University

摘　　要：Lithium-oxygen batteries(LOBs)with high energy density are a promising advanced energy storage technology.However,the slow cathodic redox kinetics during cycling causes the discharge products to fail to decompose in time,resulting in large polarization and battery failure in a short time.Therefore,a self-supporting interconnected nanosheet array network NiCo_(2)O_(4)/MnO_(2)with a Mott-Schottky heterostructure on titanium paper(TP-NCO/MO)is ingeniously designed as an efficient cathode catalyst material for LOBs.This heterostructure can accelerate electron transfer and influence the charge transfer process during adsorption of intermediate by triggering the interface disturbance at the heterogeneous interface,thus accelerating oxygen reduction and oxygen evolution kinetics and regulating product decomposition,which is expected to solve the above problems.The meticulously designed unique structural advantages enable the TP-NCO/MO cathode catalyst to exhibit an astounding ultra-long cycle life of 800 cycles and an extraordinarily low overpotential of 0.73 V.This study utilizes a simple method to cleverly regulate the morphology of the discharge products by constructing a Mott-Schottky heterostructure,providing important reference for the design of efficient catalysts aimed at optimizing the adsorption of reaction intermediates.

关 键 词：Mott-Schottky heterostructure Lithium-oxygen batteries ELECTROCATALYSTS ELECTRODEPOSITION 

分 类 号：O643.36[理学—物理化学] TM911.41[理学—化学]