Production of fast-charge Zn-based aqueous batteries via interfacial adsorption of ion-oligomer complexes

Aqueous zinc batteries are attracting interest because of their potential for cost-effective and safe electricity storage. However, metallic zinc exhibits only moderate reversibility in aqueous electrolytes. To circumvent this issue, we study aqueous Zn batteries able to form nanometric interphases...

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Published in:Nature communications 2022-04, Vol.13 (1), p.2283-2283, Article 2283
Main Authors: Jin, Shuo, Yin, Jiefu, Gao, Xiaosi, Sharma, Arpita, Chen, Pengyu, Hong, Shifeng, Zhao, Qing, Zheng, Jingxu, Deng, Yue, Joo, Yong Lak, Archer, Lynden A.
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639/301/299/891
639/301/357/404
639/4077/4079/891
639/638/161
639/638/675
Aqueous electrolytes
Batteries
Charge density
Current density
Electric energy storage
Electricity
Electrolytes
Electrolytic cells
Humanities and Social Sciences
Interphase
Manganese dioxide
multidisciplinary
NMR
Nuclear magnetic resonance
Oligomers
Science
Science (multidisciplinary)
Zinc
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container_title Nature communications
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creator Jin, Shuo
Yin, Jiefu
Gao, Xiaosi
Sharma, Arpita
Chen, Pengyu
Hong, Shifeng
Zhao, Qing
Zheng, Jingxu
Deng, Yue
Joo, Yong Lak
Archer, Lynden A.
description Aqueous zinc batteries are attracting interest because of their potential for cost-effective and safe electricity storage. However, metallic zinc exhibits only moderate reversibility in aqueous electrolytes. To circumvent this issue, we study aqueous Zn batteries able to form nanometric interphases at the Zn metal/liquid electrolyte interface, composed of an ion-oligomer complex. In Zn||Zn symmetric cell studies, we report highly reversible cycling at high current densities and capacities (e.g., 160 mA cm −2 ; 2.6 mAh cm −2 ). By means of quartz-crystal microbalance, nuclear magnetic resonance, and voltammetry measurements we show that the interphase film exists in a dynamic equilibrium with oligomers dissolved in the electrolyte. The interphase strategy is applied to aqueous Zn||I 2 and Zn||MnO 2 cells that are charged/discharged for 12,000 cycles and 1000 cycles, respectively, at a current density of 160 mA cm −2 and capacity of approximately 0.85 mAh cm −2 . Finally, we demonstrate that Zn||I 2 -carbon pouch cells (9 cm 2 area) cycle stably and deliver a specific energy of 151 Wh/kg (based on the total mass of active materials in the electrode) at a charge current density of 56 mA cm −2 . Aqueous zinc batteries attract interest because of their potential for cost-effective and safe electricity storage. Here, the authors develop an in situ formed ion-oligomer nanometric interphase strategy to enable fast-charge aqueous Zn cells.
doi_str_mv 10.1038/s41467-022-29954-6
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subjects 639/301/299/891
639/301/357/404
639/4077/4079/891
639/638/161
639/638/675
Aqueous electrolytes
Batteries
Charge density
Current density
Electric energy storage
Electricity
Electrolytes
Electrolytic cells
Humanities and Social Sciences
Interphase
Manganese dioxide
multidisciplinary
NMR
Nuclear magnetic resonance
Oligomers
Science
Science (multidisciplinary)
Zinc
title Production of fast-charge Zn-based aqueous batteries via interfacial adsorption of ion-oligomer complexes
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