首页|Surface-targeted functionalization of nickel-rich cathodes through synergistic slurry additive approach with multi-level impact using minimal quantity

Surface-targeted functionalization of nickel-rich cathodes through synergistic slurry additive approach with multi-level impact using minimal quantity

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LiNi0.8Co0.1Mn0.1O2(NCM811),a Ni-rich layered oxide,is a promising cathode material for high-energy density lithium-ion batteries(LIBs).However,its structural instability,caused by adverse phase transitions and continuous oxygen release,as well as deteriorated interfacial stability due to excessive electrolyte oxidative decomposition,limits its widespread application.To address these issues,a new concept is proposed that surface targeted precise functionalization(STPF)of the NCM811 cathode using a synergistic slurry additive(SSA)approach.This approach involves coating the NCM811 particle surface with 3-aminopropyl dimethoxy methyl silane(3-ADMS),followed by the precise deposition of ascorbic acid via an acid-base interaction.The slurry additives induce the formation of an ultra-thin spinel surface layer and a stable cathode-electrolyte interface(CEI),which enhances the electrochemical kinetics and inhibits crack propagation.The STPF strategy implemented by the SSA approach significantly improves the cyclic stability and rate performance of the NCM811 cathode in both half-cell and full-cell configurations.This work establishes a promising strategy to enhance the structural stability and electrochemical performance of nickel-rich cathodes and provides a feasible route to promote practical applications of high-energy density lithium-ion battery technology.

nickel-rich cathodeslurry additivelithium-ion batterycathode-electrolyte interfaceascorbic acidphase transition

Jing Zhang、Jiapei Li、Longhao Cao、Wenhua Cheng、Ziyin Guo、Xiuxia Zuo、Chao Wang、Ya-Jun Cheng、Yonggao Xia、Yudai Huang

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State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources

College of Chemistry,Xinjiang University,Urumqi 830017,China

Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo 315201,China

School of Materials Science and Engineering,Tongji University,Shanghai 200240,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Project of Nature Science Foundation of Xinjiang ProvinceXinjiang Autonomous Region Major ProjectsXinjiang Autonomous Region Major ProjectsNatural Science Foundation of Zhejiang ProvinceNingbo Science & Technology Innovation 2025 Major ProjectFoundation of State Key Laboratory of Chemistry and Utilization of Carbonbased Energy ResourceKey Laboratory of Biobased Polymeric Materials of Zhejiang Province

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2024

10.1007/s12274-023-5960-z

纳米研究(英文版)

纳米研究(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.17(1)
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