A durable ZnS cathode for aqueous Zn-S batteries

Dongdong Liu; Bin He; Yun Zhong; Jie Chen; Lixia Yuan; Zhen Li; Yunhui Huang

doi:10.1016/j.nanoen.2022.107474

A durable ZnS cathode for aqueous Zn-S batteries

Dongdong Liu
, Bin He
, Yun Zhong
, Jie Chen
, Lixia Yuan
, Zhen Li
, Yunhui Huang

Huazhong University of Science and Technology

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

117 Scopus citations

Abstract

Traditional aqueous zinc-ion batteries suffer from an unsatisfactory energy density due to the limited specific capacity of cathode. Zn-S battery shows a high energy density due to the high theoretical capacity of S (1675 mAh g⁻¹). However, the sluggish redox kinetics and large volume evolution hinder its practical application. To tackle these problems, we propose a nanoscale ZnS packed and connected by carbon sheath (ZnS@CF) as the cathode. By introducing iodinated thiourea as a redox mediator, the activation barrier of ZnS@CF is reduced to 1.26 V. The ZnS@CF cathode delivers an extraordinary capacity of 465 mAh g_ZnS⁻¹, a high specific energy density of 274 Wh kg_ZnS⁻¹ (832 Wh kg_S⁻¹) and excellent rate performance (197 mAh g_ZnS⁻¹ at 9.04 C). This work provides a promising high performance cathode and strategies to improve the kinetics and cycle stability of Zn-S batteries.

Original language	English
Article number	107474
Journal	Nano Energy
Volume	101
DOIs	https://doi.org/10.1016/j.nanoen.2022.107474
State	Published - Oct 2022
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Aqueous rechargeable battery
Hierarchical nanostructure
Redox mediator
Zn-S battery
ZnS cathode

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10.1016/j.nanoen.2022.107474

Cite this

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title = "A durable ZnS cathode for aqueous Zn-S batteries",

abstract = "Traditional aqueous zinc-ion batteries suffer from an unsatisfactory energy density due to the limited specific capacity of cathode. Zn-S battery shows a high energy density due to the high theoretical capacity of S (1675 mAh g−1). However, the sluggish redox kinetics and large volume evolution hinder its practical application. To tackle these problems, we propose a nanoscale ZnS packed and connected by carbon sheath (ZnS@CF) as the cathode. By introducing iodinated thiourea as a redox mediator, the activation barrier of ZnS@CF is reduced to 1.26 V. The ZnS@CF cathode delivers an extraordinary capacity of 465 mAh gZnS−1, a high specific energy density of 274 Wh kgZnS−1 (832 Wh kgS−1) and excellent rate performance (197 mAh gZnS−1 at 9.04 C). This work provides a promising high performance cathode and strategies to improve the kinetics and cycle stability of Zn-S batteries.",

keywords = "Aqueous rechargeable battery, Hierarchical nanostructure, Redox mediator, Zn-S battery, ZnS cathode",

author = "Dongdong Liu and Bin He and Yun Zhong and Jie Chen and Lixia Yuan and Zhen Li and Yunhui Huang",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = oct,

doi = "10.1016/j.nanoen.2022.107474",

language = "英语",

volume = "101",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A durable ZnS cathode for aqueous Zn-S batteries

AU - Liu, Dongdong

AU - He, Bin

AU - Zhong, Yun

AU - Chen, Jie

AU - Yuan, Lixia

AU - Li, Zhen

AU - Huang, Yunhui

PY - 2022/10

Y1 - 2022/10

N2 - Traditional aqueous zinc-ion batteries suffer from an unsatisfactory energy density due to the limited specific capacity of cathode. Zn-S battery shows a high energy density due to the high theoretical capacity of S (1675 mAh g−1). However, the sluggish redox kinetics and large volume evolution hinder its practical application. To tackle these problems, we propose a nanoscale ZnS packed and connected by carbon sheath (ZnS@CF) as the cathode. By introducing iodinated thiourea as a redox mediator, the activation barrier of ZnS@CF is reduced to 1.26 V. The ZnS@CF cathode delivers an extraordinary capacity of 465 mAh gZnS−1, a high specific energy density of 274 Wh kgZnS−1 (832 Wh kgS−1) and excellent rate performance (197 mAh gZnS−1 at 9.04 C). This work provides a promising high performance cathode and strategies to improve the kinetics and cycle stability of Zn-S batteries.

AB - Traditional aqueous zinc-ion batteries suffer from an unsatisfactory energy density due to the limited specific capacity of cathode. Zn-S battery shows a high energy density due to the high theoretical capacity of S (1675 mAh g−1). However, the sluggish redox kinetics and large volume evolution hinder its practical application. To tackle these problems, we propose a nanoscale ZnS packed and connected by carbon sheath (ZnS@CF) as the cathode. By introducing iodinated thiourea as a redox mediator, the activation barrier of ZnS@CF is reduced to 1.26 V. The ZnS@CF cathode delivers an extraordinary capacity of 465 mAh gZnS−1, a high specific energy density of 274 Wh kgZnS−1 (832 Wh kgS−1) and excellent rate performance (197 mAh gZnS−1 at 9.04 C). This work provides a promising high performance cathode and strategies to improve the kinetics and cycle stability of Zn-S batteries.

KW - Aqueous rechargeable battery

KW - Hierarchical nanostructure

KW - Redox mediator

KW - Zn-S battery

KW - ZnS cathode

UR - https://www.scopus.com/pages/publications/85132935301

U2 - 10.1016/j.nanoen.2022.107474

DO - 10.1016/j.nanoen.2022.107474

M3 - 文章

AN - SCOPUS:85132935301

SN - 2211-2855

VL - 101

JO - Nano Energy

JF - Nano Energy

M1 - 107474

ER -

A durable ZnS cathode for aqueous Zn-S batteries

Abstract

UN SDGs

Keywords

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