A Chemically Self-Charging Flexible Solid-State Zinc-Ion Battery Based on VO2 Cathode and Polyacrylamide–Chitin Nanofiber Hydrogel Electrolyte

Chaozheng Liu; Wangwang Xu; Changtong Mei; Meichun Li; Weimin Chen; Shu Hong; Won Yeong Kim; Sang young Lee; Qinglin Wu

doi:10.1002/aenm.202003902

A Chemically Self-Charging Flexible Solid-State Zinc-Ion Battery Based on VO₂ Cathode and Polyacrylamide–Chitin Nanofiber Hydrogel Electrolyte

Chaozheng Liu, Wangwang Xu, Changtong Mei, Meichun Li, Weimin Chen, Shu Hong, Won Yeong Kim, Sang young Lee, Qinglin Wu

Department of Chemical and Biomolecular Engineering

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

43 Citations (Scopus)

Abstract

Conventional self-charging systems are generally complicated and highly reliant on the availability of energy sources. Herein, a chemically self-charging, flexible solid-state zinc ion battery (ssZIB) based on a vanadium dioxide (VO₂) cathode and a polyacrylamide-chitin nanofiber (PAM-ChNF) hydrogel electrolyte is developed. With a power density of 139.0 W kg^-1, the ssZIBs can deliver a high energy density of 231.9 Wh kg^-1. The superior electrochemical performance of the ssZIBs is attributed to the robust tunnel structure of the VO₂ cathode and the entangled network of PAM-ChNF electrolyte, which provide efficient pathways for ion diffusion. Impressively, the designed ssZIBs can be chemically self-charged by the redox reaction between the cathode and oxygen in ambient conditions. After oxidation for 6 h in air, the ssZIBs manifest a high discharging capacity of 263.9 mAh g^-1 at 0.2 A g^-1, showing excellent self-rechargeability. With the assistance of a small amount of acetic acid added to the hydrogel electrolyte, the galvanostatic discharging and chemical self-charging cycles can reach 20. More importantly, such ssZIBs are able to operate well at chemical or/and galvanostatic charging hybrid modes, demonstrating superior reusability. This work brings a new prospect for designing flexible chemically self-charging ssZIBs for portable self-powered systems.

Original language	English
Article number	2003902
Journal	Advanced Energy Materials
Volume	11
Issue number	25
DOIs	https://doi.org/10.1002/aenm.202003902
Publication status	Published - 2021 Jul 8

Bibliographical note

Funding Information:
This work was financially supported by the National First-class Disciplines (PNFD), the National Natural Science Foundation of China (No. 21905305), the Natural Science Foundation of Jiangsu Province (BK20200776), the Jiangsu Agriculture Science and Technology Innovation Fund (CX(20)3054), and the Jiangsu Specially-Appointed Professor Program, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the USDA Forest Service/US Endowment (Grant No. E17-23).

Funding Information:
This work was financially supported by the National First‐class Disciplines (PNFD), the National Natural Science Foundation of China (No. 21905305), the Natural Science Foundation of Jiangsu Province (BK20200776), the Jiangsu Agriculture Science and Technology Innovation Fund (CX(20)3054), and the Jiangsu Specially‐Appointed Professor Program, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the USDA Forest Service/US Endowment (Grant No. E17‐23).

Publisher Copyright:
© 2021 Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

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

Access to Document

10.1002/aenm.202003902

Cite this

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title = "A Chemically Self-Charging Flexible Solid-State Zinc-Ion Battery Based on VO2 Cathode and Polyacrylamide–Chitin Nanofiber Hydrogel Electrolyte",

abstract = "Conventional self-charging systems are generally complicated and highly reliant on the availability of energy sources. Herein, a chemically self-charging, flexible solid-state zinc ion battery (ssZIB) based on a vanadium dioxide (VO2) cathode and a polyacrylamide-chitin nanofiber (PAM-ChNF) hydrogel electrolyte is developed. With a power density of 139.0 W kg-1, the ssZIBs can deliver a high energy density of 231.9 Wh kg-1. The superior electrochemical performance of the ssZIBs is attributed to the robust tunnel structure of the VO2 cathode and the entangled network of PAM-ChNF electrolyte, which provide efficient pathways for ion diffusion. Impressively, the designed ssZIBs can be chemically self-charged by the redox reaction between the cathode and oxygen in ambient conditions. After oxidation for 6 h in air, the ssZIBs manifest a high discharging capacity of 263.9 mAh g-1 at 0.2 A g-1, showing excellent self-rechargeability. With the assistance of a small amount of acetic acid added to the hydrogel electrolyte, the galvanostatic discharging and chemical self-charging cycles can reach 20. More importantly, such ssZIBs are able to operate well at chemical or/and galvanostatic charging hybrid modes, demonstrating superior reusability. This work brings a new prospect for designing flexible chemically self-charging ssZIBs for portable self-powered systems.",

author = "Chaozheng Liu and Wangwang Xu and Changtong Mei and Meichun Li and Weimin Chen and Shu Hong and Kim, {Won Yeong} and Lee, {Sang young} and Qinglin Wu",

note = "Funding Information: This work was financially supported by the National First-class Disciplines (PNFD), the National Natural Science Foundation of China (No. 21905305), the Natural Science Foundation of Jiangsu Province (BK20200776), the Jiangsu Agriculture Science and Technology Innovation Fund (CX(20)3054), and the Jiangsu Specially-Appointed Professor Program, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the USDA Forest Service/US Endowment (Grant No. E17-23). Funding Information: This work was financially supported by the National First‐class Disciplines (PNFD), the National Natural Science Foundation of China (No. 21905305), the Natural Science Foundation of Jiangsu Province (BK20200776), the Jiangsu Agriculture Science and Technology Innovation Fund (CX(20)3054), and the Jiangsu Specially‐Appointed Professor Program, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the USDA Forest Service/US Endowment (Grant No. E17‐23). Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",

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AU - Liu, Chaozheng

AU - Xu, Wangwang

AU - Mei, Changtong

AU - Li, Meichun

AU - Chen, Weimin

AU - Hong, Shu

AU - Kim, Won Yeong

AU - Lee, Sang young

AU - Wu, Qinglin

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N2 - Conventional self-charging systems are generally complicated and highly reliant on the availability of energy sources. Herein, a chemically self-charging, flexible solid-state zinc ion battery (ssZIB) based on a vanadium dioxide (VO2) cathode and a polyacrylamide-chitin nanofiber (PAM-ChNF) hydrogel electrolyte is developed. With a power density of 139.0 W kg-1, the ssZIBs can deliver a high energy density of 231.9 Wh kg-1. The superior electrochemical performance of the ssZIBs is attributed to the robust tunnel structure of the VO2 cathode and the entangled network of PAM-ChNF electrolyte, which provide efficient pathways for ion diffusion. Impressively, the designed ssZIBs can be chemically self-charged by the redox reaction between the cathode and oxygen in ambient conditions. After oxidation for 6 h in air, the ssZIBs manifest a high discharging capacity of 263.9 mAh g-1 at 0.2 A g-1, showing excellent self-rechargeability. With the assistance of a small amount of acetic acid added to the hydrogel electrolyte, the galvanostatic discharging and chemical self-charging cycles can reach 20. More importantly, such ssZIBs are able to operate well at chemical or/and galvanostatic charging hybrid modes, demonstrating superior reusability. This work brings a new prospect for designing flexible chemically self-charging ssZIBs for portable self-powered systems.

AB - Conventional self-charging systems are generally complicated and highly reliant on the availability of energy sources. Herein, a chemically self-charging, flexible solid-state zinc ion battery (ssZIB) based on a vanadium dioxide (VO2) cathode and a polyacrylamide-chitin nanofiber (PAM-ChNF) hydrogel electrolyte is developed. With a power density of 139.0 W kg-1, the ssZIBs can deliver a high energy density of 231.9 Wh kg-1. The superior electrochemical performance of the ssZIBs is attributed to the robust tunnel structure of the VO2 cathode and the entangled network of PAM-ChNF electrolyte, which provide efficient pathways for ion diffusion. Impressively, the designed ssZIBs can be chemically self-charged by the redox reaction between the cathode and oxygen in ambient conditions. After oxidation for 6 h in air, the ssZIBs manifest a high discharging capacity of 263.9 mAh g-1 at 0.2 A g-1, showing excellent self-rechargeability. With the assistance of a small amount of acetic acid added to the hydrogel electrolyte, the galvanostatic discharging and chemical self-charging cycles can reach 20. More importantly, such ssZIBs are able to operate well at chemical or/and galvanostatic charging hybrid modes, demonstrating superior reusability. This work brings a new prospect for designing flexible chemically self-charging ssZIBs for portable self-powered systems.

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