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Issue 3, 2019
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A self-supported, three-dimensional porous copper film as a current collector for advanced lithium metal batteries

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Abstract

Li metal anodes have high capacity and low potential, however, many intrinsic problems such as the growth of Li dendrites hamper the development of Li metal batteries. Herein, we proposed a scalable approach to construct a three-dimensional (3D) porous structure on commercial Cu foil through a liquid Ga-induced alloying–dealloying strategy. The porous structure with a large surface area could effectively homogenize the Li deposition, thus alleviating the growth of Li dendrites. When the 3D porous Cu is used as the current collector, the coulombic efficiency of half cells is up to 98% over 200 cycles at 0.5 mA cm−2, and a long cycling life surpassing 700 h at 0.5 mA cm−2 is obtained in symmetric cells. Besides, full cells with a LiFePO4 cathode exhibit good cycling stability and excellent rate capability. Our findings provide a innovative strategy to fabricate advanced current collectors and solve the problem of Li metal batteries.

Graphical abstract: A self-supported, three-dimensional porous copper film as a current collector for advanced lithium metal batteries

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Publication details

The article was received on 28 Sep 2018, accepted on 28 Nov 2018 and first published on 29 Nov 2018


Article type: Paper
DOI: 10.1039/C8TA09384A
Citation: J. Mater. Chem. A, 2019,7, 1092-1098

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    A self-supported, three-dimensional porous copper film as a current collector for advanced lithium metal batteries

    Y. Shi, Z. Wang, H. Gao, J. Niu, W. Ma, J. Qin, Z. Peng and Z. Zhang, J. Mater. Chem. A, 2019, 7, 1092
    DOI: 10.1039/C8TA09384A

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