Defect Engineered Graphene Materials for Supercapacitors

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Defect Engineered Graphene Materials for Supercapacitors

Madhabi Devi and Ashok Kumar

Growing global demand for efficient and sustainable energy storage systems can be met through the development of electrochemical capacitors or supercapacitors owing to their high power performance, long cycle life and environmental benignity. Graphene and its derivatives have been widely used as electrode materials for supercapacitors because of their high specific surface area, low density, high electrical conductivity, thermal and mechanical stability. However, their re-aggregation reduces specific surface area and inhibits their electrochemical performance. Introducing defects in graphene has gained importance to address this issue, which can change its density of states, crystal symmetry and porosity enhancing electrode-electrolyte interfacial interaction. The present chapter deals with defect engineering on graphene-based materials for improved supercapacitor performance. Different defect generation and characterization techniques have been discussed in detail.

Keywords
Supercapacitors, Graphene, Defect Engineering, Doping, Functionalization, Irradiation, Swift Heavy Ions

Published online 12/1/2019, 48 pages

Citation: Madhabi Devi and Ashok Kumar, Defect Engineered Graphene Materials for Supercapacitors, Materials Research Foundations, Vol. 64, pp 209-256, 2020

DOI: https://doi.org/10.21741/9781644900550-8

Part of the book on Graphene as Energy Storage Material for Supercapacitors

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