界面操作使快速离子传输动力学向高速率和长期循环的锂金属阳极

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-05-09 DOI:10.1016/j.mseb.2025.118404

Yuchen Wang, Tianrun Huang, Shuixin Xia

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引用次数: 0

摘要

开发锂金属阳极代替传统的石墨阳极，可以显著促进电池能量密度的飞跃。然而，由于锂金属表面天然固体电解质间相层的不稳定性，导致锂枝晶生长难以控制，长期以来制约了锂金属的实际实施。本文采用简便、大规模的气相-固相沉积方法，合理构建了稳定Li金属的g-C3N4界面层。改性后的锂金属具有更高的库仑效率、高倍率（10 mA cm−2）和长周期稳定性（1800次）。Li|LiFePO4电池表现出卓越的倍率能力和改进的循环稳定性。此外，Li|LiCoO2电池还显示出超过650次循环的超长寿命稳定循环，每个循环的超低衰减率为~ 0.011%。这项工作提出了一种简便、可扩展的策略，用于构建高稳定的锂金属阳极。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Interfacial manipulation enabling fast-ion-transport kinetics towards high rate and long-term cycling Li metal anode

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Interfacial manipulation enabling fast-ion-transport kinetics towards high rate and long-term cycling Li metal anode

Developing Li metal anode replacing the conventional graphite anode can significantly promote a big leap in cell energy density. However, the practical implementation of Li metal has long been fettered by the notorious and uncontrollable Li dendrite growth due to the instability of the native solid electrolyte interphase layer on Li metal surface. Herein, a robust g-C₃N₄ interface layer has been rationally constructed for Li metal stabilization by the facile and large-scalable vapor–solid deposition method. The modified Li metal shows improved Coulombic efficiency, high-rate capability (10 mA cm⁻²) and long-term cycling stability (1800 cycles). The Li|LiFePO₄ cell exhibits exceptional rate capability and improved cycling stability. Moreover, the Li|LiCoO₂ cell also shows an exceptionally ultralong lifespan stable cycling over 650 cycles with an ultralow decay rate of ∼0.011 % per cycle. This work presents a facile and scalable strategy for constructing highly stable Li metal anode for practical implementation.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.