A solid-to-solid metallic conversion electrochemistry toward 91% zinc utilization for sustainable aqueous batteries

Zhiguo Hou; Tengsheng Zhang; Xin Liu; Zhibin Xu; Jiahao Liu; Wanhai Zhou; Yitai Qian; Hong Jin Fan; Dongliang Chao; Dongyuan Zhao

doi:10.1126/sciadv.abp8960

A solid-to-solid metallic conversion electrochemistry toward 91% zinc utilization for sustainable aqueous batteries

Zhiguo Hou, Tengsheng Zhang, Xin Liu, Zhibin Xu, Jiahao Liu, Wanhai Zhou, Yitai Qian, Hong Jin Fan, Dongliang Chao^*, Dongyuan Zhao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

120 Citations (Scopus)

Abstract

The diffusion-limited aggregation (DLA) of metal ion (Mⁿ⁺) during the repeated solid-to-liquid (StoL) plating and liquid-to-solid (LtoS) stripping processes intensifies fatal dendrite growth of the metallic anodes. Here, we report a new solid-to-solid (StoS) conversion electrochemistry to inhibit dendrites and improve the utilization ratio of metals. In this StoS strategy, reversible conversion reactions between sparingly soluble carbonates (Zn or Cu) and their corresponding metals have been identified at the electrode/electrolyte interface. Molecular dynamics simulations confirm the superiority of the StoS process with accelerated anion transport, which eliminates the DLA and dendrites in the conventional LtoS/StoL processes. As proof of concept, 2ZnCO₃·3Zn(OH)₂ exhibits a high zinc utilization of ca. 95.7% in the asymmetry cell and 91.3% in a 2ZnCO₃·3Zn(OH)₂ || Ni-based full cell with 80% capacity retention over 2000 cycles.

Original language	English
Article number	eabp8960
Journal	Science advances
Volume	8
Issue number	41
DOIs	https://doi.org/10.1126/sciadv.abp8960
Publication status	Published - Oct 2022
Externally published	Yes

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Copyright © 2022 The Authors, some rights reserved.

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@article{b287a04d082f4ca3ad624dd90fc5ca9b,

title = "A solid-to-solid metallic conversion electrochemistry toward 91% zinc utilization for sustainable aqueous batteries",

abstract = "The diffusion-limited aggregation (DLA) of metal ion (Mn+) during the repeated solid-to-liquid (StoL) plating and liquid-to-solid (LtoS) stripping processes intensifies fatal dendrite growth of the metallic anodes. Here, we report a new solid-to-solid (StoS) conversion electrochemistry to inhibit dendrites and improve the utilization ratio of metals. In this StoS strategy, reversible conversion reactions between sparingly soluble carbonates (Zn or Cu) and their corresponding metals have been identified at the electrode/electrolyte interface. Molecular dynamics simulations confirm the superiority of the StoS process with accelerated anion transport, which eliminates the DLA and dendrites in the conventional LtoS/StoL processes. As proof of concept, 2ZnCO3·3Zn(OH)2 exhibits a high zinc utilization of ca. 95.7% in the asymmetry cell and 91.3% in a 2ZnCO3·3Zn(OH)2 || Ni-based full cell with 80% capacity retention over 2000 cycles.",

author = "Zhiguo Hou and Tengsheng Zhang and Xin Liu and Zhibin Xu and Jiahao Liu and Wanhai Zhou and Yitai Qian and Fan, {Hong Jin} and Dongliang Chao and Dongyuan Zhao",

note = "Publisher Copyright: Copyright {\textcopyright} 2022 The Authors, some rights reserved.",

year = "2022",

month = oct,

doi = "10.1126/sciadv.abp8960",

language = "English",

volume = "8",

journal = "Science advances",

issn = "2375-2548",

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T1 - A solid-to-solid metallic conversion electrochemistry toward 91% zinc utilization for sustainable aqueous batteries

AU - Hou, Zhiguo

AU - Zhang, Tengsheng

AU - Liu, Xin

AU - Xu, Zhibin

AU - Liu, Jiahao

AU - Zhou, Wanhai

AU - Qian, Yitai

AU - Fan, Hong Jin

AU - Chao, Dongliang

AU - Zhao, Dongyuan

PY - 2022/10

Y1 - 2022/10

N2 - The diffusion-limited aggregation (DLA) of metal ion (Mn+) during the repeated solid-to-liquid (StoL) plating and liquid-to-solid (LtoS) stripping processes intensifies fatal dendrite growth of the metallic anodes. Here, we report a new solid-to-solid (StoS) conversion electrochemistry to inhibit dendrites and improve the utilization ratio of metals. In this StoS strategy, reversible conversion reactions between sparingly soluble carbonates (Zn or Cu) and their corresponding metals have been identified at the electrode/electrolyte interface. Molecular dynamics simulations confirm the superiority of the StoS process with accelerated anion transport, which eliminates the DLA and dendrites in the conventional LtoS/StoL processes. As proof of concept, 2ZnCO3·3Zn(OH)2 exhibits a high zinc utilization of ca. 95.7% in the asymmetry cell and 91.3% in a 2ZnCO3·3Zn(OH)2 || Ni-based full cell with 80% capacity retention over 2000 cycles.

AB - The diffusion-limited aggregation (DLA) of metal ion (Mn+) during the repeated solid-to-liquid (StoL) plating and liquid-to-solid (LtoS) stripping processes intensifies fatal dendrite growth of the metallic anodes. Here, we report a new solid-to-solid (StoS) conversion electrochemistry to inhibit dendrites and improve the utilization ratio of metals. In this StoS strategy, reversible conversion reactions between sparingly soluble carbonates (Zn or Cu) and their corresponding metals have been identified at the electrode/electrolyte interface. Molecular dynamics simulations confirm the superiority of the StoS process with accelerated anion transport, which eliminates the DLA and dendrites in the conventional LtoS/StoL processes. As proof of concept, 2ZnCO3·3Zn(OH)2 exhibits a high zinc utilization of ca. 95.7% in the asymmetry cell and 91.3% in a 2ZnCO3·3Zn(OH)2 || Ni-based full cell with 80% capacity retention over 2000 cycles.

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A solid-to-solid metallic conversion electrochemistry toward 91% zinc utilization for sustainable aqueous batteries

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