Article Title

Vertically stacked holey graphene/polyaniline heterostructures with enhanced energy storage for on-chip micro-supercapacitors

Authors

Xiaocong Tian, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Bei Xiao, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Xu Xu, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
Lin Xu, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
Zehua Liu, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Zhaoyang Wang, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Mengyu Yan, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Qiulong Wei, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
Liqiang Mai, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

Keywords

micro-supercapacitors, holey graphene, heterostructures, ionic accessibility, intrinsic electrochemical behaviors

Abstract

Planar micro-supercapacitors (MSCs) have drawn extensive research attention owing to their unique structural design and size compatibility for microelectronic devices. Graphene has been widely used to improve the performance of microscale electrochemical capacitors. However, investigations of an intrinsic electrochemical mechanism for graphene-based microscale devices are still not sufficient. Here, micro-supercapacitors with various typical architectures are fabricated as models to study the graphene effect, and their electrochemical performance is also evaluated. The results show that ionic accessibility and adsorption are greatly improved after the introduction of the holey graphene intermediate layer. This study provides a new route to understand intrinsic electrochemical behaviors and possesses exciting potential for highly efficient on-chip micro-energy storage.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-016-0989-x

Publisher

Tsinghua University Press

Recommended Citation

Xiaocong Tian,Bei Xiao,Xu Xu,Lin Xu,Zehua Liu,Zhaoyang Wang,Mengyu Yan,Qiulong Wei,Liqiang Mai, Vertically stacked holey graphene/polyaniline heterostructures with enhanced energy storage for on-chip micro-supercapacitors. NanoRes.2016, 9(4): 1012–1021