Journal article

The Interplay of Oxygen Functional Groups and Folded Texture in Densified Graphene Electrodes for Compact Sodium-Ion Capacitors

Jun Zhang, Wei Lv, Dequn Zheng, Qinghua Liang, Da-Wei Wang, Feiyu Kang, Quan-Hong Yang

Advanced Energy Materials | Wiley | Published : 2018

Abstract

Sodium‐ion capacitors (SICs) can effectively combine high energy density with high power density, and are especially appropriate for high‐power demanding applications of large‐scale stationary energy storage. Surface‐induced pseudocapacitive charge storage based on porous or nano carbon materials is regarded as the most promising candidate for SICs. Unfortunately, their ultralow packing densities severely restrict their practical applications. A novel approach toward ultrafast high‐volumetric SICs based on folded‐graphene electrodes has already been demonstrated and showed quite competitive performance. In this work, it is further proved that oxygen functional groups and folded texture are t..

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University of Melbourne Researchers

Grants

Awarded by National Science Fund for Distinguished Young Scholars China


Awarded by National Key Basic Research Program of China


Awarded by National Natural Science Foundation of China


Awarded by Shenzhen Technical Plan Project


Awarded by Australian Research Council


Funding Acknowledgements

The authors appreciate support from the National Science Fund for Distinguished Young Scholars China (No. 51525204), the National Key Basic Research Program of China (2014CB932400), the National Natural Science Foundation of China (No. 51372167), the Shenzhen Technical Plan Project (Nos. KQJSCX20160226191136, JCJ20150529164918734 and JCYJ20170412171630020), Tsinghua University-UNSW Seed Grant and the Australian Research Council Discovery Project (DP160103244). Tsinghua University-UNSW Seed Grant