Abstract
Graphene-polyaniline (GP) composites are promising electrode materials for supercapacitors but possessing unsatisfied stability, especially under high mass loading, due to the low ion transmission efficiency and serious pulverization effect. To address this issue, we propose a scalable method to achieve highly wettable GP electrodes, showing excellent stability. In addition, our results demonstrate that the performance of electrodes is nearly independent of the mass loading, indicating the great potential of such GP electrodes for practical devices. We attribute the remarkable performance of GP to the delicate precursor of nitrogen doped graphene film assembled by wet-spinning technology. This report provides a strategy to promote the ion penetrating efficiency across the electrodes and deter the pulverization effect, aiming at the practical GP supercapacitor electrodes of high mass loading.
摘要
石墨烯-聚苯胺(GP)复合材料是一种有前途的超级电容器电极材料, 但其稳定性较差, 尤其在负载量高的情况下. 低离子传输效率和严重的粉碎效应是导致这一结果的主要原因. 为了解决这个问题, 我们提出了一种可规模化制备高度可润湿GP电极的方法, 该电极显示出优异的稳定性. 此外, 研究结果表明电极的性能几乎与负载量无关, 因此这种GP电极在实际生产中具有巨大潜力. 通过湿纺技术组装的氮掺杂石墨烯薄膜前驱体使得这种电极材料表现出卓越性能. 这种提高电极间离子渗透效率并阻止粉碎效应的方法, 旨在制备实用型高负载量的GP超级电容器电极.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (51533008, 21325417, 51603183, 51703194, 51803177 and 21805242), the National Key R&D Program of China (2016YFA0200200), Fujian Provincial Science and Technology Major Projects (2018HZ0001-2), Hundred Talents Program of Zhejiang University (188020*194231701/113), the Key Research and Development Plan of Zhejiang Province (2018C01049), and the Fundamental Research Funds for the Central Universities (2017QNA4036 and 2017XZZX001-04).
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Tieqi Huang graduated from Shanghai Jiao Tong University (SJTU) in 2011 and obtained his PhD degree from Zhejiang University in 2018. Currently he is doing postdoctoral research at Nanjing Tech University. His research interests focus on the energy storage, especially supercapacitor.
Chao Gao obtained his PhD degree from Shanghai Jiao Tong University (SJTU) in 2001. He was appointed as an Associate Professor at SJTU in 2002. He did postdoctoral research at the University of Sussex with Prof. Sir Harry W. Kroto and AvH research at Bayreuth University with Prof. Axel H. E. Muller during 2003–2006. He joined the Department of Polymer Science and Engineering, Zhejiang University in 2008 and was promoted as a full Professor. His research interests focus on graphene chemistry, macroscopic assembly, and energy storage.
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Wet-spinning assembly of nitrogen-doped graphene film for stable graphene-polyaniline supercapacitor electrodes with high mass loading
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Chu, X., Huang, T., Hu, Y. et al. Wet-spinning assembly of nitrogen-doped graphene film for stable graphene-polyaniline supercapacitor electrodes with high mass loading. Sci. China Mater. 63, 1889–1897 (2020). https://doi.org/10.1007/s40843-019-9436-1
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DOI: https://doi.org/10.1007/s40843-019-9436-1