New Insights into the Mechanism of Enhanced Performance of Li[Ni_{0.8}Co_{0.1}Mn_{0.1}]O₂ with a Polyacrylic Acid-Modified Binder

Rong Li; Chang-Jiang Bai; Hao Liu; Li-Wen Yang; Yong Ming; Chun-Liu Xu; Zhou Wei; Yang Song; Gong-Ke Wang; Yu-Xia Liu; Ben-He Zhong; Yan-Jun Zhong; Zhen-Guo Wu; Xiao-Dong Guo

doi:10.1021/acsami.0c22052

journal article·2021-03-03

New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder

Rong Li, Chang-Jiang Bai, Hao Liu, Li-Wen Yang, Yong Ming, Chun-Liu Xu, Zhou Wei, Yang Song, Gong-Ke Wang, Yu-Xia Liu, Ben-He Zhong, Yan-Jun Zhong, Zhen-Guo Wu, Xiao-Dong Guo

ACS Applied Materials & Interfaces· Volume 13· Issue 8

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Source abstract

Abstract

A binder is an important component in lithium-ion batteries and plays a significant role in maintaining the properties of active substances. Most studies in the field of binders have only focussed on physical properties such as bonding performance. Here, a polyacrylic acid-modified binder was designed and adapted to Li[Ni0.8Co0.1Mn0.1]O2, which enhanced the electrochemical stability of Li[Ni0.8Co0.1Mn0.1]O2 from 30.2 to 66.6% (300 cycles at 1 C). We for the first time discovered that this was caused by a chemical reaction between polyacrylic acid and the residual lithium on the surface during the cycling, which formed a lithium propionic acid coating layer and maintained the stability of the layered structure.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Extraction and Separation Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Chemical Engineering, Sichuan University, Chengdu 610065, PR China

School of Materials Science and Engineering, Henan Normal University, XinXiang 453007, PR China

The Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical, Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China

Funding

Sichuan University · National Natural Science Foundation of China

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