Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/22368
Title: 
Authors: 
Keywords: 
Polyaniline
Graphene oxide
Doping
Aqueous zinc-ion batteries
Flexible device
Issue Date: 
2020
Citation: 
Du, W., Xiao, J., Geng, H., Yang, Y., Zhang, Y., Ang, E. H., Ye, M., & Li, C. C. (2020). Rational-design of polyaniline cathode using proton doping strategy by graphene oxide for enhanced aqueous zinc-ion batteries. Journal of Power Sources, 450: Article 227716. https://doi.org/10.1016/j.jpowsour.2020.227716
Abstract: 
Aqueous zinc-ion batteries (ZIBs) have been of excellent interest in the latest years due to their environmental benignity and easy preparation. One vital barrier to the production of high-performance ZIBs is the development of appropriate cathode materials. Polyaniline (PANI) is very promising, particularly due to its excellent conductivity and easy preparation, among varied cathode materials. However, deprotonation of PANI is a key problem greatly deteriorating capacity and cycling stability of PANI cathode. In this study, we discover that graphene oxide (GO) can fix the problem effectively as the wealthy functional GO oxygen groups can provide a local proton reservoir that increases PANI protonation. As a result, the GO composited PANI electrodes show significantly improved zinc-ion storage performance than pure carbon composited PANI cathodes. Specifically, the battery performances in terms of capacity (233 mA h g−1) and rate performance (100 mA h g−1 under 5 A g−1) are enhanced significantly after introducing GO into PANI cathode. Besides, flexible PANI-based ZIB devices can be easily fabricated owing to the excellent film-forming property of GO. This work offers new insight for improving PANI cathode materials by carbon chemistry.
Description: 
This is the final draft, after peer-review, of a manuscript published in Journal of Power Sources. The published version is available online at https://doi.org/10.1016/j.jpowsour.2020.227716
URI: 
ISSN: 
0378-7753
Other Identifiers: 
10.1016/j.jpowsour.2020.227716
Website: 
Grant ID: 
National Natural Science Foundation of China (Grant No. 51771058)
National Natural Science Foundation of China (Grant No. 51801030)
Natural Science Foundation of Guangdong Providence (Grant No.2018A030310571)
One-hundred Young Talents (Class A) of Guangdong University of Technology (Grant No.220413198)
Pearl River Talent Program of Guangdong Province (2017GC010030)
Funding Agency: 
National Natural Science Foundation of China
Natural Science Foundation of Guangdong Providence
One-hundred Young Talents (Class A) of Guangdong University of Technology
Pearl River Talent Program of Guangdong Province
Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme
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