Adaptive Stress Response in 2D Graphene@Se Composite toward Ultra‐Stable All‐Solid‐State Lithium‐Selenium Batteries

Shuaiyu He; Guobao Xu; Zhihao Yan; Huan Hu; Xue Li; Ke Huang; Gang Wang; Liwen Yang; Jianyu Huang; Zhaoying Ren; Dandan Cui; Beibei Xu; Yun‐Xiao Wang; Shi‐Xue Dou; Yaru Liang; Wei‐Hong Lai

doi:10.1002/adma.202507782

journal article·2025-09

Adaptive Stress Response in 2D Graphene@Se Composite toward Ultra‐Stable All‐Solid‐State Lithium‐Selenium Batteries

Shuaiyu He, Guobao Xu, Zhihao Yan, Huan Hu, Xue Li, Ke Huang, Gang Wang, Liwen Yang, Jianyu Huang, Zhaoying Ren, Dandan Cui, Beibei Xu, Yun‐Xiao Wang, Shi‐Xue Dou, Yaru Liang, Wei‐Hong Lai

Advanced Materials· Volume 37· Issue 38

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Abstract

Abstract All‐solid‐state lithium‐selenium batteries (ASSLSeBs) offer high energy density and improved safety for next‐generation energy storage. Still, selenium cathodes suffer from large volume changes during cycling, leading to mechanical stress and rapid capacity fade. To address this, a stress‐adaptive 2D graphene@Se composite cathode is developed, where small Se nanoparticles are anchored onto acid‐treated expanded graphite (AcEG) to enhance charge transport and alleviate stress. Mechanical characterization confirms that the composite effectively mitigates Li‐ion‐induced strain. As a result, ASSLSeBs with this cathode achieve exceptional cycling stability with ultrahigh capacity retention after 4000 cycles at 2 C and stable performance for over 400 cycles even under high active‐material loading. Furthermore, an all‐solid‐state Li‐Se pouch cell with a record energy density of 376.8 Wh kg⁻¹ is demonstrated, the highest reported for ASSLSeBs. This work presents a strategy for designing stress‐adaptive cathodes, enabling ultra‐stable ASSLSeBs for practical applications.

Source: crossref · Quality: baseline

Research context

Energy storage Nanomaterials Composites

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

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

Affiliations

Hunan Provincial Key laboratory of Thin Film Materials and Devices School of Materials Science and Engineering Xiangtan University Hunan 411105 P. R. China

School of Physics and Optoelectronics Xiangtan University Hunan 411105 P. R. China

School of Physics Beihang University Beijing 100191 P. R. China

State Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai 200050 P. R. China

Institute of Energy Materials Science University of Shanghai for Science and Technology Shanghai 200093 P. R. China

Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200438 P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Hunan Province · China Postdoctoral Science Foundation

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