Copper Polypropylene Metal Plastic Composite Copper Foil: Future-Proof Anode Current Collector Solution for Lithium-Ion Batteries with High Energy Density

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI:10.1021/acsami.4c08053

Jing Niu, Xianli Huang, Hui Yang, Datuan Li, Xingxu Gao, Ling Yang, Qian Chen, Ao Sun, Kejun Zheng, Tao Wang, Jianping He

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Abstract

Composite copper foil is considered to be the future-proof anode current collector solution for lithium-ion batteries (LIBs) with high energy density, for its light weight and low cost. Polypropylene (PP) film is widely used as the support layer of composite copper foil current collectors (CCs) due to its excellent mechanical properties and chemical stability. However, the interface adhesion between the PP layer and the copper layer is weak, due to the significant difference in surface energy. In this study, we prepared a hydrophilic PP film by air plasma treatment. After magnetron sputtering and electroplating, the composite copper foil (PP@Cu-1) with strong adhesion was then successfully prepared. In the T-peel test, for PP@Cu-1, the pull required to separate PP from the copper layer is approximately 7 times that of PP@Cu-0. The PP@Cu-1 composite copper foil exhibits excellent electrochemical properties when applied to LIBs. As an anode CC material, it could be a favorable competitor to conventional commercial Bare Cu and holds broad prospects for application in high-energy-density LIBs.

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铜聚丙烯金属塑料复合铜箔：面向未来的高能量密度锂离子电池阳极集流解决方案

复合铜箔重量轻、成本低，被认为是面向未来的高能量密度锂离子电池（LIB）负极集流器解决方案。聚丙烯（PP）薄膜具有优异的机械性能和化学稳定性，因此被广泛用作复合铜箔集电体（CC）的支撑层。然而，由于聚丙烯层与铜层的表面能存在显著差异，因此两者之间的界面附着力较弱。在本研究中，我们通过空气等离子处理制备了亲水性 PP 薄膜。经过磁控溅射和电镀后，成功制备出附着力强的复合铜箔（PP@Cu-1）。在 T 型剥离试验中，PP@Cu-1 使 PP 与铜层分离所需的拉力约为 PP@Cu-0 的 7 倍。PP@Cu-1 复合铜箔应用于 LIB 时表现出优异的电化学性能。作为阳极 CC 材料，它是传统商用裸铜的有利竞争者，在高能量密度 LIB 中具有广阔的应用前景。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.