Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/159304
Title: Reunderstanding the reaction mechanism of aqueous Zn–Mn batteries with sulfate electrolytes: role of the zinc sulfate hydroxide
Authors: Chen, Hao
Dai, Chunlong
Xiao, Fangyuan
Yang, Qiuju
Cai, Shinan
Xu, Maowen
Fan, Hong Jin
Bao, Shu-Juan
Keywords: Engineering::Materials::Energy materials
Issue Date: 2022
Source: Chen, H., Dai, C., Xiao, F., Yang, Q., Cai, S., Xu, M., Fan, H. J. & Bao, S. (2022). Reunderstanding the reaction mechanism of aqueous Zn–Mn batteries with sulfate electrolytes: role of the zinc sulfate hydroxide. Advanced Materials, 34(15), 2109092-. https://dx.doi.org/10.1002/adma.202109092
Project: RG 85/20 
Journal: Advanced Materials 
Abstract: Rechargeable aqueous Zn-Mn batteries have garnered extensive attention for next-generation high-safety energy storage. However, the charge-storage chemistry of Zn-Mn batteries remains controversial. Prevailing mechanisms include conversion reaction and cation (de)intercalation in mild acid or neutral electrolytes, and a MnO2 /Mn2+ dissolution-deposition reaction in strong acidic electrolytes. Herein, a Zn4 SO4 ·(OH)6 ·xH2 O (ZSH)-assisted deposition-dissolution model is proposed to elucidate the reaction mechanism and capacity origin in Zn-Mn batteries based on mild acidic sulfate electrolytes. In this new model, the reversible capacity originates from a reversible conversion reaction between ZSH and Znx MnO(OH)2 nanosheets in which the MnO2 initiates the formation of ZSH but contributes negligibly to the apparent capacity. The role of ZSH in this new model is confirmed by a series of operando characterizations and by constructing Zn batteries using other cathode materials (including ZSH, ZnO, MgO, and CaO). This research may refresh the understanding of the most promising Zn-Mn batteries and guide the design of high-capacity aqueous Zn batteries.
URI: https://hdl.handle.net/10356/159304
ISSN: 0935-9648
DOI: 10.1002/adma.202109092
Schools: School of Physical and Mathematical Sciences 
Rights: This is the peer reviewed version of the following article: Chen, H., Dai, C., Xiao, F., Yang, Q., Cai, S., Xu, M., Fan, H. J. & Bao, S. (2022). Reunderstanding the reaction mechanism of aqueous Zn–Mn batteries with sulfate electrolytes: role of the zinc sulfate hydroxide. Advanced Materials, 34(15), 2109092-, which has been published in final form at https://doi.org/10.1002/adma.202109092. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
Accepted Version for Online.pdf1.25 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 5

138
Updated on Jul 13, 2024

Web of ScienceTM
Citations 5

79
Updated on Oct 29, 2023

Page view(s)

126
Updated on Jul 16, 2024

Download(s) 50

142
Updated on Jul 16, 2024

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.