Influence of Tris(trimethylsilyl)phosphite Additive on the Electrochemical Performance of Lithium-ion Batteries Using Thin-film Ni-rich Cathodes

被引：1

作者：

Wang, Wencong ^{[1
]}

Lee, Changhee ^{[1
]}

Miyahara, Yuto ^{[1
]}

Abe, Takeshi ^{[1
]}

Miyazaki, Kohei ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Kyotodaigaku Katsura, Nishikyo ku, Kyoto 6158510, Japan

来源：

ELECTROCHEMISTRY | 2022年 / 90卷 / 09期

关键词：

Lithium-ion Batteries; Additives; NCM622; Cathode Electrolyte Interface; ELECTRODE-ELECTROLYTE INTERFACE; LAYERED CATHODE; HIGH-VOLTAGE;

D O I：

10.5796/electrochemistry.22-00083

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The characteristics of the interface between Ni-rich cathode materials and carbonate-based electrolytes are crucial for stability in charge -discharge cycles. In this study, we used tris(trimethylsilyl)phosphite (TMSPi) as an additive for film formation and investigated the properties of the layer formed on a LiNi0.6Co0.2Mn0.2O2 (NCM622) thin-film electrode. This layer can act as a barrier to mitigate the underlying attack at the oxygen sites of the layered Ni-rich structure. Moreover, this layer mainly consists of Li-rich organic components, leading to a decreased activation energy with a rapid Li-ion transfer process.

引用

页数：5

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