Abstract

Alkaline zinc-based flow batteries are regarded to be among the best choices for electric energy storage. Nevertheless, application is challenged by the issue of zinc dendrite/accumulation. Here, we report a negatively charged nanoporous membrane for a dendrite-free alkaline zinc-based flow battery with long cycle life. Free of zinc dendrite/accumulation, stable performance is afforded for ∼240 cycles at current densities ranging from 80 to 160 mA cm−2 using the negatively charged nanoporous membrane. Furthermore, 8 h and 7 h plating/stripping processes at 40 mA cm−2 yield an average energy efficiency of 91.92% and an areal discharge capacity above 130 mAh cm−2. A peak power density of 1056 mW cm−2 is achieved at 1040 mA cm−2. This study may provide an effective way to address the issue of zinc dendrite/accumulation for zinc-based batteries and accelerate the advancement of these batteries.

Details

Title
Negatively charged nanoporous membrane for a dendrite-free alkaline zinc-based flow battery with long cycle life
Author
Yuan, Zhizhang 1 ; Liu, Xiaoqi 2 ; Xu, Wenbin 1 ; Duan, Yinqi 1 ; Zhang, Huamin 3 ; Li, Xianfeng 3   VIAFID ORCID Logo 

1  Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China 
2  Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China; University of Chinese Academy of Sciences, Beijing, P. R. China 
3  Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China; Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Dalian, P. R. China 
Pages
1-11
Publication year
2018
Publication date
Sep 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-018-06209-x
ProQuest document ID
2103659074
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.