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

被引：40

作者：

Tian, Xiaocong ^{[1
]}

Xiao, Bei ^{[1
]}

Xu, Xu ^{[1
,2
]}

Xu, Lin ^{[3
]}

Liu, Zehua ^{[1
]}

Wang, Zhaoyang ^{[1
]}

Yan, Mengyu ^{[1
]}

Wei, Qiulong ^{[1
]}

Mai, Liqiang ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[3] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

来源：

NANO RESEARCH | 2016年 / 9卷 / 04期

基金：

对外科技合作项目（国际科技项目）; 中国国家自然科学基金;

关键词：

micro-supercapacitors; holey graphene; heterostructures; ionic accessibility; intrinsic electrochemical behaviors; HIGH-PERFORMANCE SUPERCAPACITORS; RAMAN-SPECTROSCOPY; LITHIUM BATTERIES; COMPOSITE FILMS; HIGH-POWER; GRAPHENE; ELECTRODES; CARBON; STATE; OXIDE;

D O I：

10.1007/s12274-016-0989-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：1012 / 1021

页数：10