An extended substrate screening strategy enabling a low lattice mismatch for highly reversible zinc anodes

Zhiyang Zheng, Xiongwei Zhong, Qi Zhang, Mengtian Zhang, Lixin Dai, Xiao Xiao, Jiahe Xu, Miaolun Jiao, Boran Wang, Hong Li, Yeyang Jia, Rui Mao and Guangmin Zhou ()
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Zhiyang Zheng: Tsinghua University
Xiongwei Zhong: Tsinghua University
Qi Zhang: Tsinghua University
Mengtian Zhang: Tsinghua University
Lixin Dai: Tsinghua University
Xiao Xiao: Tsinghua University
Jiahe Xu: Tsinghua University
Miaolun Jiao: Tsinghua University
Boran Wang: Tsinghua University
Hong Li: Tsinghua University
Yeyang Jia: Tsinghua University
Rui Mao: Tsinghua University
Guangmin Zhou: Tsinghua University

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Aqueous zinc batteries possess intrinsic safety and cost-effectiveness, but dendrite growth and side reactions of zinc anodes hinder their practical application. Here, we propose the extended substrate screening strategy for stabilizing zinc anodes and verify its availability (dsubstrate: dZn(002) = 1: 1→dsubstrate: dZn(002)=n:1, n = 1, 2). From a series of calculated phyllosilicates satisfying dsubstrate ≈ 2dZn(002), we select vermiculite, which has the lowest lattice mismatch (0.38%) reported so far, as the model to confirm the effectiveness of “2dZn(002)” substrates for zinc anodes protection. Then, we develop a monolayer porous vermiculite through a large-scale and green preparation as a functional coating for zinc electrodes. Unique “planting Zn(002) seeds” mechanism for “2dZn(002)” substrates is revealed to induce the oriented growth of zinc deposits. Additionally, the coating effectively inhibits side reactions and promotes zinc ion transport. Consequently, the modified symmetric cells operate stably for over 300 h at a high current density of 50 mA cm−2. This work extends the substrate screening strategy and advances the understanding of zinc nucleation mechanism, paving the way for realizing high-rate and stable zinc-metal batteries.

Date: 2024
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DOI: 10.1038/s41467-024-44893-0

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