A Replacement Reaction Enabled Interdigitated Metal/Solid Electrolyte Architecture for Battery Cycling at 20 mA cm-2 and 20 mAh cm-2

A Replacement Reaction Enabled Interdigitated Metal/Solid Electrolyte Architecture for Battery Cycling at 20 mA cm-2 and 20 mAh cm-2
Title:
A Replacement Reaction Enabled Interdigitated Metal/Solid Electrolyte Architecture for Battery Cycling at 20 mA cm-2 and 20 mAh cm-2
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Journal of the American Chemical Society
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Publication Date:
17 February 2021
Citation:
J. Am. Chem. Soc. 2021, 143, 3143-3152
Abstract:
Metal anodes represent as a prime choice for the coming generation rechargeable batteries with high energy density. However, daunting challenges including electrode volume variation and inevitable side reactions preclude them from becoming a viable technology. Here, a facile replacement reaction was employed to fabricate a three-dimensional (3D) interdigitated metal/solid electrolyte composite electrode, which not only provides a stable host structure for buffering the volume change within the composite but also prevents side reactions by avoiding the direct contact between active metal and liquid electrolyte. As a proof-of-concept demonstration, a 3D interdigitated zinc (Zn) metal/solid electrolyte architecture was fabricated via a galvanic replacement reaction between Zn metal foil and indium (In) chloride solution followed by electrochemical activation, featuring the interdigitation between metallic Zn and amorphous indium hydroxide sulfate (IHS) with high Zn2+ conductivity (56.9 ± 1.8 mS cm–1), large Zn2+ transference number (0.55), and high electronic resistivity [(2.08 ± 0.01) × 103 Ω cm]. The as-designed Zn/IHS electrode sustained stable electrochemical Zn plating/stripping over 700 cycles with a record-low overpotential of 8 mV at 1 mA cm–2 and 0.5 mAh cm–2. More impressively, it displayed cycle-stable performance with low overpotential of 10 mV under ultrahigh current density and areal capacity (20 mA cm–2, 20 mAh cm–2), which outperformed all the reported Zn metal electrodes in mild aqueous electrolyte. The fabrication of interdigitated metal/solid electrolyte was generalized to other metal pairs, including Zn/Sn and Zn/Co, which provide inspiration for next-generation Zn metal batteries with high energy density and reversibility.
License type:
PublisherCopyrights
Funding Info:
Y. S. acknowledges the financial support by the Innovation Fund of Wuhan National Laboratory for Optoelectronics of Huazhong University of Science and Technology. Z. C. thanks the China Postdoctoral Science Foundation (No. 2018M640694, 2020T130223). The authors would like to thank the Analytical and Testing Center of Huazhong University of Science and Technology as well as the Center for Nanoscale Characterization & Devices of Wuhan National Laboratory for Optoelectronics for providing the facilities to conduct the characterization. This research used resources 7-BM of the National Synchrotron Light Source II, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. E. H. and X.-Q. Y. are supported by the US Department of Energy, the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, through Advanced Battery Material Research (BMR) program under Contract Number DE-SC0012704. Z. W. S. acknowledges the support of the Singapore National Research Foundation (NRF-NRFF2017-04).
Description:
This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Journal of the American Chemical Society, copyright © American Chemical Society after peer review. To access the final edited and published work, see https://doi.org/10.1021/jacs.0c11753
ISSN:
1520-5126
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