Synergistic Design of 3D Architecture and Cu2O Interface Engineering for Dendrite-free Lithium Metal Anodes

IF 2.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electronic Materials Pub Date : 2026-01-22 DOI:10.1007/s11664-026-12692-6

Wenyu Liao, Xuanting Guo, Xinyu Shen, Qinqin Xiong, Xiaoshi Hu, Haiying Qin

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引用次数: 0

Abstract

Lithium metal batteries (LMBs) have emerged as a cornerstone of next-generation energy storage technologies due to their high energy density. However, practical applications are hindered by lithium dendrite growth and volume expansion at the lithium metal anodes (LMAs). To address these challenges, this study develops a novel current collector (Cu₂O/etched brass [EB]) integrating a three-dimensional (3D) porous brass framework (EB) with a lithiophilic Cu₂O layer, achieving synergistic structural and interfacial regulation. The 3D porous architecture mitigates local current density and accommodates volume expansion, while the Cu₂O layer enables low nucleation overpotential for homogeneous lithium deposition, thereby lowering the charge transfer resistance and effectively suppressing the formation of lithium dendrites and dead lithium. The assembled Cu₂O/EB-300@Li||LiFePO₄ full cell demonstrates 95% capacity retention with 99.1% coulombic efficiency (CE) after 300 cycles, along with high-rate capability. This work provides an innovative strategy for achieving high-energy-density and long-cycling LMBs.

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无枝晶锂金属阳极三维结构与Cu2O界面工程协同设计

锂金属电池（lmb）因其高能量密度而成为下一代储能技术的基石。然而，实际应用受到锂枝晶生长和锂金属阳极（LMAs）体积膨胀的阻碍。为了解决这些挑战，本研究开发了一种新型集流器（Cu2O/蚀刻黄铜[EB]），将三维（3D）多孔黄铜框架（EB）与亲锂Cu2O层集成在一起，实现了协同结构和界面调节。三维多孔结构减轻了局部电流密度，有利于体积膨胀，而Cu2O层降低了成核过电位，有利于均匀锂沉积，从而降低了电荷转移电阻，有效抑制了锂枝晶和死锂的形成。组装的Cu2O/EB-300@Li||LiFePO4全电池在300次循环后显示出95%的容量保持率和99.1%的库仑效率（CE），以及高倍率容量。这项工作为实现高能量密度和长循环lmb提供了一种创新策略。

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.