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.

引用

页数：10

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