Lithium-ion intercalation by coupled ion-electron transfer

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-10-02 DOI:10.1126/science.adq2541

Yirui Zhang, Dimitrios Fraggedakis, Tao Gao, Shakul Pathak, Debbie Zhuang, Cristina Grosu, Yash Samantaray, Armando R. C. Neto, Sravani R. Duggirala, Botao Huang, Yun Guang Zhu, Livia Giordano, Ryoichi Tatara, Harsh Agarwal, Ryan M. Stephens, Martin Z. Bazant, Yang Shao-Horn

引用次数: 0

Abstract

The underlying reaction mechanism in lithium-ion batteries remains poorly understood. We provide experimental and theoretical evidence that lithium intercalation occurs by coupled ion-electron transfer, where ion transfer across the electrode-electrolyte interface is facilitated by electron transfer to a neighboring redox site. Electrochemical measurements for a variety of common electrode and electrolyte materials reveal a universal dependence of the (de-)intercalation rate on Li⁺ vacancy fraction, as well as temperature and electrolyte effects consistent with the theory, which could be used to guide the molecular design of lithium-ion battery interfaces.

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离子-电子耦合转移的锂离子嵌入

锂离子电池的潜在反应机制仍然知之甚少。我们提供了实验和理论证据，证明锂嵌入是通过离子-电子耦合转移发生的，其中电子转移到邻近的氧化还原位点促进了离子在电极-电解质界面上的转移。对多种常用电极和电解质材料的电化学测量表明，（脱）插层速率普遍依赖于Li +空位分数，以及温度和电解质效应，这与理论一致，可用于指导锂离子电池界面的分子设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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