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journal article·2025-02

Mitigating Crosstalk by Slurry Additive Toward 5 V Cobalt‐Free LiNi0.5Mn1.5O4 Cathode

Cancan Peng, Min Li, Ying Yu, Wenwen Xue, Suzhe Liang, Jinu Song, Jiapei Li, Longhao Cao, Yonggao Xia, Chao Yang, Kunkun Guo, Ya‐Jun Cheng

Small· Volume 21· Issue 5
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Source abstract

Abstract

Abstract LiNi0.5Mn1.5O4 (LNMO), with its spinel symmetry, emerges as a promising cathode material for high‐voltage lithium‐ion batteries (LIBs). Nonetheless, the vulnerability of LNMO to interfacial degradation, particularly electrolyte breakdown during high‐voltage operation, compromises its long‐term cycling performance. To overcome this longstanding challenge, a slurry additive—polyester‐urethane‐acrylate (PEUA)—to form a multi‐functional ultra‐thin electrode coating, enhancing the lifespan and energy density of LIBs is introduced. Comprehensive characterizations and theoretical analyses reveal that the PEUA slurry additive effectively maintains electrode integrity, facilitates electrons and lithium ions transport, and inhibits hazardous side reactions, thus preventing the by‐products from triggering cathode‐electrolyte‐anode interface crosstalk. Consequently, the 5 V LNMO || Li cell with PEUA slurry additive maintains a high‐capacity retention of 97.8%, with improved cycling stability at high‐temperature and full‐cell configurations. This crosstalk‐mitigation strategy offers a promising avenue for extending the lifespan and electrochemical performance of high‐voltage cobalt‐free cathodes, advancing the practical use of high‐energy density LIB technology.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Technologies Research · Advanced Battery Materials and Technologies

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

Affiliations

College of Materials Science and Engineering Hunan University Changsha Hunan Province 410082 P. R. China

Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences 1219 Zhongguan West Rd Ningbo Zhejiang Province 315201 P. R. China

School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide South Australia 5000 Australia

College of Renewable Energy Hohai University 1915 Hohai Avenue Changzhou Jiangsu Province 213200 P. R. China

Eastern Institute for Advanced Study Eastern Institute of Technology Ningbo Zhejiang 315201 P. R. China

University of Science and Technology of China Hefei Anhui 230026 P. R. China

Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences 19A Yuquan Rd Shijingshan District Beijing 100049 P. R. China

School of Chemistry and Chemical Engineering Linyi University Linyi Shandong 276005 P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Natural Science Foundation of Shandong Province · Science and Technology Innovation 2025 Major Project of Ningbo

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