Design of layered-stacking graphene assemblies as advanced electrodes for supercapacitors (Open Access)--颗粒学报PARTICUOLOGY

Qi, B., Ren, K., Lin, Y., Zhang, S., Wei, T., & Fan, Z. (2022). Design of layered-stacking graphene assemblies as advanced electrodes for supercapacitors. Particuology, 60, 1-13. https://doi.org/10.1016/j.partic.2021.03.001

Design of layered-stacking graphene assemblies as advanced electrodes for supercapacitors (Open Access)

Bin Qi ^{a 1}, Kang Ren ^{a 1}, Yueqiang Lin ^{a 1}, Su Zhang ^b *, Tong Wei ^a, Zhuangjun Fan ^a *

a State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, PR China
b Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, PR China

10.1016/j.partic.2021.03.001

Volume 60, January 2022, Pages 1-13

Received 24 February 2021, Revised 8 March 2021, Accepted 9 March 2021, Available online 31 March 2021, Version of Record 23 October 2021.

E-mail: suzhangs@163.com; fanzhj666@163.com

Highlights

• Advantages of the layered-stacking graphene assemblies.

• Novel methods for the design of layered-stacking structures.

• Methods for the improved performance under high mass loading.

Abstract

Graphene is a competitive electrode material for supercapacitors due to its unique two-dimensional structure, large surface area, high conductivity, and good physicochemical stability. However, random agglomeration and restacking of graphene sheets result in a reduced surface area and a loose structure with low density, which severely restricts the application for high gravimetric/volumetric energy density devices. Rational design of the layered-stacking structure of graphene assemblies can effectively prevent the restacking of graphene sheets, construct efficient ion transport channels, and improve spatial utilization, demonstrating the huge potential for developing advanced electrode materials. Herein, from the aspect of improving the electrochemical kinetics through designing efficient electron and ion transport paths, we first highlight the advantages of layered-stacking graphene assemblies, describe some common routes for preparing graphene building units, and then summarize the novel methods to design layered-stacking structures. A comprehensive review of the typical structure including nanocarbon pillared graphene, porous graphene blocks, and graphene ribbon films is provided with a focus on the mechanisms behind the performance improvements. Finally, critical challenges and some general ideas for future development are proposed, which may open up new opportunities for material chemistry and device innovation.

Graphical abstract

Keywords

Supercapacitor; Graphene; Layered-stacking structure; Pillar; Electrochemical kinetic

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