New exploration of water-soluble lithium polyacrylate/xanthan gum composite binder for Li-rich Mn-based cathode materials

被引：4

作者：

Zhao, Taolin ^{[1
,2
,3
]}

Liu, Zezheng ^{[1
]}

Gu, Qingyuan ^{[1
]}

Zhang, Xinlei ^{[1
]}

Jin, Xiaoyu ^{[1
]}

Xie, Saihu ^{[1
]}

Liu, Shuai ^{[1
]}

机构：

[1] Shijiazhuang Tiedao Univ, Sch Mat Sci & Engn, Shijiazhuang 050043, Peoples R China

[2] Hebei Key Lab Adv Mat Transportat Engn & Environm, Shijiazhuang 050043, Peoples R China

[3] Hebei Engn Res Ctr Metamat & Microdevices, Shijiazhuang 050043, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2024年 / 841卷

基金：

中国国家自然科学基金;

关键词：

Lithium-ion batteries; Lithium-rich cathode; Binder; Xanthan gum; Lithium polyacrylate; AQUEOUS BINDER; ION BATTERIES; XANTHAN GUM; PERFORMANCE;

D O I：

10.1016/j.cplett.2024.141182

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Li-rich Mn-based oxides are considered promising cathode materials of Li-ion batteries with high specific capacity and operating voltage. However, Li-rich materials suffer from a high initial irreversible capacity loss and severe voltage attenuation during cycling. In this work, lithium polyacrylate (LiPAA) was crosslinked with xanthan gum (XG) to form a water-soluble binder for Li[Li0.2Co0.13Ni0.13Mn0.54]O2 electrode. The capacity retention was 78.3 % after 100 cycles at 0.2 C. LiPAA provided additional Li+ ions during cycling, while XG firmly bound to the surface of the active particles. Cost-effective binders provide a facile mean to improve the electrochemical performance of Li-rich cathode materials.

引用

页数：7

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