MnO2-graphene based composites for supercapacitors: Synthesis, performance and prospects

Supercapacitors stand out among some traditional energy storage devices due to their advantages such as long cycle stability, fast charge-discharge performance and high-power density. Therefore, it is necessary to explore high-performance electrode materials for application in supercapacitors. Manga...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2022-09, Vol.914, p.165343, Article 165343
Main Authors: Zhao, Yue, Hao, Huilian, Song, Tianliang, Wang, Xu, Li, Changwang, Li, Wenyao
Format: Article
Language:English
Subjects:
Composite
Composite materials
Conducting polymers
Electrode materials
Electrodes
Energy storage
Graphene
Low conductivity
Low resistance
Manganese dioxide
MnO2
Supercapacitor
Supercapacitors
Surface stability
Thermal stability
Transition metal oxides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Supercapacitors stand out among some traditional energy storage devices due to their advantages such as long cycle stability, fast charge-discharge performance and high-power density. Therefore, it is necessary to explore high-performance electrode materials for application in supercapacitors. Manganese dioxide (MnO2) has high theoretical capacitance and high energy density, however, the deterioration of volume expansion and low conductivity directly affect its wide application. Graphene has attracted great interest owing to its invention. The combination of graphene and MnO2 can not only highlight the low resistance, large specific surface area and thermal stability of graphene, but also solve the shortcomings of MnO2 alone as an electrode material. The proposal of composite materials has also promoted the development and application of electrode materials in supercapacitors. Hence, this review aims to summarize the synthetic strategies and research progress of MnO2-graphene based multi-element composites, including the combination of MnO2-graphene with various carbon materials, transition metal oxides and conducting polymers, respectively. Finally, the possible development directions of MnO2-graphene based composite electrode materials in the future are also prospected. [Display omitted] •Focusing on the synthesis strategy and electrochemical performance.•Multi-composites exert synergistic effects and offer significant performance.•MnO2-graphene based composites still have a promising future in other fields.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2022.165343