Inhibition of Surface-Originated Degradations in Lithium-Rich Layered Cathode via a Pre-Constructed Carbon/Fluorine-Rich Artificial CEI Layer.

He Zhao, Jiaqi Sun, Razium Ali Soomro, Ning Sun, Song Hong, Bin Xu

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Article in Nano-micro letters, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

He ZhaoState Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.

Jiaqi SunState Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.

Razium Ali SoomroInstitute of Advanced Energy Storage Materials and Technologies, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an, 716000, People's Republic of China.

Ning SunState Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.

Song HongAnalysis Technology R&D Center, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.

Bin XuState Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China. xubin@yau.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the ongoing pursuit of energy-dense lithium-ion batteries (LIBs), Li-rich layered oxide (LLO) cathodes provide an attractive path forward with extraordinary capacity delivery and low raw material cost. However, the surface-originated degradations and local structure rearrangement incur severe capacity and voltage fading, which fundamentally impedes the practical deployment of LLOs. Here, we report a pre-constructed multifunctional carbon/fluorine-rich artificial cathode electrolyte interface (CEI) layer via a facile thermal treatment. This surface integrated layer, with high-voltage tolerance and amorphous features, is designed to mitigate surface-originated parasitic reactions and phase transformations induced by electrochemistry. Multiscale characterizations reveal that the artificial CEI layer exhibits excellent interfacial compatibility with both the LLO cathode and the electrolyte system, ensuring highly reversible anionic redox and low activation barrier for Li

Indexed as

Anionic redox reactionCEI layerLi-rich layered cathodesSurface tailoring

Identifiers

PMID42429886

DOI10.1007/s40820-026-02276-8

PMCPMC13354738

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