Enhancing interfacial compatibility and ionic transportation kinetics in lithium-rich manganese oxide via magnetron sputtering conformal coating with amorphous LiPON

被引：4
作者：
Chen, Yue [1 ,2 ]
Huang, Yulin [1 ,2 ]
Fang, Chenxi [1 ]
Wang, Pengcheng [1 ,2 ]
Cheng, Houlin [1 ,2 ]
Zhao, Guiying [1 ,2 ]
Lin, Yingbin [1 ,2 ]
Huang, Zhigao [1 ,2 ]
Li, Jiaxin [1 ,2 ]
机构：
[1] Fujian Normal Univ, Coll Phys & Energy, Fujian Prov Solar Energy Convers & Energy Storage, Fuzhou 350117, Peoples R China
[2] Fujian Prov Key Lab Quantum Manipulat & New Energy, Fuzhou 350117, Fujian, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2024年 / 495卷
关键词：
Lithium -rich manganese oxide; Electrochemical performance; Interfacial compatibility; LiPON coating layer; STABILITY; CATHODE;
D O I：
10.1016/j.cej.2024.153603
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study presents the application of magnetron sputtering for the conformal coating of lithium phosphorus oxynitride (LiPON) onto lithium-rich manganese oxide (LRM) materials, aiming to enhance their electrochemical performance through a cost-effective and time-efficient strategy. The LRM with approximately 0.058 % mass loading of LiPON coating (LRM-2) exhibited remarkable reversible capacities of 173.9 mAh/g and 192.5 mAh/g over 200 cycles at 25 degrees C and 60 degrees C, respectively, under 1 C charge/discharge current density. Comprehensive characterization studies revealed that LiPON modification significantly improved lithium ionic conductivity, interfacial ion transport kinetics, and interface compatibility with the electrolyte. The stable cathode-electrolyte interface effectively mitigated structural damage to LRM particles, suppressed interfacial oxygen release-induced phase transformation, and stabilized the material's microstructures. Our sputtering-based conformal coating strategy is easily accessible and low-cost, with significant commercial application potential, offering a promising universal approach for enhancing the electrochemical performance of LRM cathode powder materials.
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页数：10
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