Aqueous Alkaline Zinc-Iodine Battery with Two-Electron Transfer

Xinliang LI; Tong LIU; Pei LI; Guojin LIANG; Zhaodong HUANG; Ze CHEN; Ao CHEN; Yuefeng SU; Lijiang YANG; Duanyun CAO; Chunyi ZHI

doi:10.1021/acsnano.4c16550

Aqueous Alkaline Zinc-Iodine Battery with Two-Electron Transfer

Xinliang LI, Tong LIU, Pei LI, Guojin LIANG, Zhaodong HUANG, Ze CHEN, Ao CHEN, Yuefeng SU, Lijiang YANG, Duanyun CAO^*, Chunyi ZHI^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

Abstract

While many cathode materials have been developed for mild electrolyte-based Zn batteries, the lack of cathode materials hinders the progress of alkaline zinc batteries. Halide iodine, with its copious valence nature and redox possibilities, is considered a promising candidate. However, energetic alkaline iodine redox chemistry is impeded by an alkali-unadapted I₂ element cathode and thermodynamically unstable reaction products. Here, we formulated and evaluated an aqueous alkaline Zn–iodine battery with a two-electron transfer employing an organic iodized salt cathode and a Cl^–-manipulated electrolyte. The single-step redox reaction of the I^–/I⁺ couple resulted in a high discharge plateau of 1.68 V and a capacity of 385 mA h g^–1. Our battery reached an energy density of 577 W h kg^–1, superior to that of reported counterparts. Theoretical and experimental characterizations determined the redox chemistry between alkaline and iodine. We believe the developed iodine chemistry in alkaline environments can enrich cathode materials for alkaline batteries.

Original language	English
Pages (from-to)	2900-2908
Number of pages	9
Journal	ACS Nano
Volume	19
Issue number	2
Early online date	8 Jan 2025
DOIs	https://doi.org/10.1021/acsnano.4c16550
Publication status	Published - 21 Jan 2025
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2025 American Chemical Society.

Funding

This research was supported by the National Key R&D Program of China under Project 2019YFA0705104, GRF under Project CityU 11304921, the National Natural Science Foundation of China under Project 12204039, the National Postdoctoral Program for Innovative Talents under ProjectBX2021040, and the State Key Laboratory of Solidification Processing under Project SKLSP202312. This research was also supported by the Beijing Nova Program under Project20240484554 and the National Natural Science Foundation of Chongqing under Project CSTB2022NSCQ-MSX1261. We thank the characterizations provided by the Modern Analysis and Gene Sequencing Center of Zhengzhou University and the computational resources provided by the Beijing Super Cloud Computing Center.

Keywords

halogen electrochemistry
high energy density
iodine battery
two-electron transfer
zinc battery

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10.1021/acsnano.4c16550

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title = "Aqueous Alkaline Zinc-Iodine Battery with Two-Electron Transfer",

abstract = "While many cathode materials have been developed for mild electrolyte-based Zn batteries, the lack of cathode materials hinders the progress of alkaline zinc batteries. Halide iodine, with its copious valence nature and redox possibilities, is considered a promising candidate. However, energetic alkaline iodine redox chemistry is impeded by an alkali-unadapted I2 element cathode and thermodynamically unstable reaction products. Here, we formulated and evaluated an aqueous alkaline Zn–iodine battery with a two-electron transfer employing an organic iodized salt cathode and a Cl–-manipulated electrolyte. The single-step redox reaction of the I–/I+ couple resulted in a high discharge plateau of 1.68 V and a capacity of 385 mA h g–1. Our battery reached an energy density of 577 W h kg–1, superior to that of reported counterparts. Theoretical and experimental characterizations determined the redox chemistry between alkaline and iodine. We believe the developed iodine chemistry in alkaline environments can enrich cathode materials for alkaline batteries.",

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doi = "10.1021/acsnano.4c16550",

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T1 - Aqueous Alkaline Zinc-Iodine Battery with Two-Electron Transfer

AU - LI, Xinliang

AU - LIU, Tong

AU - LI, Pei

AU - LIANG, Guojin

AU - HUANG, Zhaodong

AU - CHEN, Ze

AU - CHEN, Ao

AU - SU, Yuefeng

AU - YANG, Lijiang

AU - CAO, Duanyun

AU - ZHI, Chunyi

PY - 2025/1/21

Y1 - 2025/1/21

N2 - While many cathode materials have been developed for mild electrolyte-based Zn batteries, the lack of cathode materials hinders the progress of alkaline zinc batteries. Halide iodine, with its copious valence nature and redox possibilities, is considered a promising candidate. However, energetic alkaline iodine redox chemistry is impeded by an alkali-unadapted I2 element cathode and thermodynamically unstable reaction products. Here, we formulated and evaluated an aqueous alkaline Zn–iodine battery with a two-electron transfer employing an organic iodized salt cathode and a Cl–-manipulated electrolyte. The single-step redox reaction of the I–/I+ couple resulted in a high discharge plateau of 1.68 V and a capacity of 385 mA h g–1. Our battery reached an energy density of 577 W h kg–1, superior to that of reported counterparts. Theoretical and experimental characterizations determined the redox chemistry between alkaline and iodine. We believe the developed iodine chemistry in alkaline environments can enrich cathode materials for alkaline batteries.

AB - While many cathode materials have been developed for mild electrolyte-based Zn batteries, the lack of cathode materials hinders the progress of alkaline zinc batteries. Halide iodine, with its copious valence nature and redox possibilities, is considered a promising candidate. However, energetic alkaline iodine redox chemistry is impeded by an alkali-unadapted I2 element cathode and thermodynamically unstable reaction products. Here, we formulated and evaluated an aqueous alkaline Zn–iodine battery with a two-electron transfer employing an organic iodized salt cathode and a Cl–-manipulated electrolyte. The single-step redox reaction of the I–/I+ couple resulted in a high discharge plateau of 1.68 V and a capacity of 385 mA h g–1. Our battery reached an energy density of 577 W h kg–1, superior to that of reported counterparts. Theoretical and experimental characterizations determined the redox chemistry between alkaline and iodine. We believe the developed iodine chemistry in alkaline environments can enrich cathode materials for alkaline batteries.

KW - halogen electrochemistry

KW - high energy density

KW - iodine battery

KW - two-electron transfer

KW - zinc battery

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DO - 10.1021/acsnano.4c16550

M3 - Journal Article (refereed)

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AN - SCOPUS:85214518431

SN - 1936-0851

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SP - 2900

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JO - ACS Nano

JF - ACS Nano

IS - 2

ER -

Aqueous Alkaline Zinc-Iodine Battery with Two-Electron Transfer

Abstract

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Keywords

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