An Aqueous Hybrid Zinc-Bromine Battery with High Voltage and Energy Density

Xinhai Yuan; Jun Mo; Jie Huang; Jun Liu; Canming Liu; Xianxiang Zeng; Wenxin Zhou; Junpei Yue; Xiongwei Wu; Yuping Wu

doi:10.1002/celc.201902030

An Aqueous Hybrid Zinc-Bromine Battery with High Voltage and Energy Density

Xinhai Yuan, Jun Mo, Jie Huang, Jun Liu, Canming Liu, Xianxiang Zeng, Wenxin Zhou, Junpei Yue, Xiongwei Wu, Yuping Wu

School of energy science and engineering

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

42 Scopus citations

Abstract

The zinc-bromine redox flow battery (ZBB) is an ideal device of energy storage systems. Nevertheless, its energy density is relatively low compared to those of Li-ion batteries, due to its low output voltage. Herein, a high-voltage aqueous hybrid zinc-bromine battery system (AHZBBs) was developed, where K⁺-conducting membrane was used to segregate neutral-alkaline hybrid electrolytes and redox couples of Br₂/Br⁻and [Zn(OH)₄]²⁻/Zn at the positive and negative electrode. Benefited from an efficient and stable cathode catalyst (carbon-manganite nanoflakes), this AHZBB delivered a high average output voltage of 2.15 V and energy density of 276.7 Wh/kg without capacity attenuation after 200 cycles. More importantly, this work provides an efficient avenue to elevating the output voltage and energy density, and will strongly encourage studies on redox flow batteries.

Original language	English
Pages (from-to)	1531-1536
Number of pages	6
Journal	ChemElectroChem
Volume	7
Issue number	7
DOIs	https://doi.org/10.1002/celc.201902030
State	Published - 1 Apr 2020

Keywords

K-conducting membrane
high energy density
high voltage
hybrid electrolytes
zinc-bromine battery

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abstract = "The zinc-bromine redox flow battery (ZBB) is an ideal device of energy storage systems. Nevertheless, its energy density is relatively low compared to those of Li-ion batteries, due to its low output voltage. Herein, a high-voltage aqueous hybrid zinc-bromine battery system (AHZBBs) was developed, where K+-conducting membrane was used to segregate neutral-alkaline hybrid electrolytes and redox couples of Br2/Br−and [Zn(OH)4]2−/Zn at the positive and negative electrode. Benefited from an efficient and stable cathode catalyst (carbon-manganite nanoflakes), this AHZBB delivered a high average output voltage of 2.15 V and energy density of 276.7 Wh/kg without capacity attenuation after 200 cycles. More importantly, this work provides an efficient avenue to elevating the output voltage and energy density, and will strongly encourage studies on redox flow batteries.",

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AU - Yuan, Xinhai

AU - Mo, Jun

AU - Huang, Jie

AU - Liu, Jun

AU - Liu, Canming

AU - Zeng, Xianxiang

AU - Zhou, Wenxin

AU - Yue, Junpei

AU - Wu, Xiongwei

AU - Wu, Yuping

PY - 2020/4/1

Y1 - 2020/4/1

N2 - The zinc-bromine redox flow battery (ZBB) is an ideal device of energy storage systems. Nevertheless, its energy density is relatively low compared to those of Li-ion batteries, due to its low output voltage. Herein, a high-voltage aqueous hybrid zinc-bromine battery system (AHZBBs) was developed, where K+-conducting membrane was used to segregate neutral-alkaline hybrid electrolytes and redox couples of Br2/Br−and [Zn(OH)4]2−/Zn at the positive and negative electrode. Benefited from an efficient and stable cathode catalyst (carbon-manganite nanoflakes), this AHZBB delivered a high average output voltage of 2.15 V and energy density of 276.7 Wh/kg without capacity attenuation after 200 cycles. More importantly, this work provides an efficient avenue to elevating the output voltage and energy density, and will strongly encourage studies on redox flow batteries.

AB - The zinc-bromine redox flow battery (ZBB) is an ideal device of energy storage systems. Nevertheless, its energy density is relatively low compared to those of Li-ion batteries, due to its low output voltage. Herein, a high-voltage aqueous hybrid zinc-bromine battery system (AHZBBs) was developed, where K+-conducting membrane was used to segregate neutral-alkaline hybrid electrolytes and redox couples of Br2/Br−and [Zn(OH)4]2−/Zn at the positive and negative electrode. Benefited from an efficient and stable cathode catalyst (carbon-manganite nanoflakes), this AHZBB delivered a high average output voltage of 2.15 V and energy density of 276.7 Wh/kg without capacity attenuation after 200 cycles. More importantly, this work provides an efficient avenue to elevating the output voltage and energy density, and will strongly encourage studies on redox flow batteries.

KW - K-conducting membrane

KW - high energy density

KW - high voltage

KW - hybrid electrolytes

KW - zinc-bromine battery

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An Aqueous Hybrid Zinc-Bromine Battery with High Voltage and Energy Density

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Keywords

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