Fabrication and interfacial characterization of Ni-rich thin-film cathodes for stable Li-ion batteries

被引：17

作者：

Jiang, Ming ^{[1
,2
,3
]}

Wu, Xiaochao ^{[4
]}

Zhang, Qian ^{[2
,4
]}

Danilov, Dmitri L. ^{[1
,2
]}

Eichel, Rudiger-A ^{[2
,4
]}

Notten, Peter H. L. ^{[1
,2
,5
]}

机构：

[1] Eindhoven Univ Technol, POB 513, NL-5600 MB Eindhoven, Netherlands

[2] Forschungszentrum Julich, IEK 9, D-52425 Julich, Germany

[3] SVOLT Energy Technol Co Ltd, Wuxi 1066, Jiangsu, Peoples R China

[4] Rhein Westfal TH Aachen, D-52074 Aachen, Germany

[5] Univ Technol Sydney, Sydney, NSW 2007, Australia

来源：

ELECTROCHIMICA ACTA | 2021年 / 398卷 / 398期

关键词：

Ni-rich cathode; Lithium niobate; CEI film; Interface; Thin-film batteries; Lithium-ion batteries; DUAL-CONDUCTIVE LAYERS; ELECTROCHEMICAL PERFORMANCE; ELECTROLYTE DECOMPOSITION; OXIDE CATHODES; STABILITY; SURFACE; MECHANISM;

D O I：

10.1016/j.electacta.2021.139316

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ni-rich LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM) and LiNbO 3 -protected LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM) thin-film cathodes have been prepared by radio frequency (RF) magnetron sputtering. Electrochemical investigations show enhanced stability of LiNbO 3 -protected cathodes compared with bare LiNi 0.6 Co 0.2 Mn 0.2 O 2 . The interfacial interaction of LiNbO 3 and LiNi 0.6 Co 0.2 Mn 0.2 O 2 layers has been investigated by XPS depth profiling and demonstrated different cathode electrolyte interface (CEI) film formation processes at the electrodes. The results elaborate on the interaction between LiNbO 3 and LiNi 0.6 Co 0.2 Mn 0.2 O 2 , emphasizing the role of the LiNbO 3 layer in improving the cycling performance of Ni-rich cathodes. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )

引用

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