Graphene-metal oxide nanocomposites for supercapacitors: A perspective review

Vardhaman V. Khedekar, Shaikh Mohammed Zaeem, Santanu Das*

Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, UP, India 221005

Adv. Mater. Lett., 2018, 9 (1), pp 02-19

DOI: 10.5185/amlett.2018.1932

Publication Date (Web): May 15, 2018

E-mail: santanudas.cer@iitbhu.ac.in

Abstract


Graphene-Metal oxide nanocomposites have been extensively investigated due to their potential applications in the fields of energy devices, including, solar cells, fuel cells, batteries, sensors, electro-catalysis, and photo-catalysis. Among them, several researches have been performed on supercapacitors, which could be best used with devices that require high current for short duration of time. Here, in this article, we present a brief review on the recent advances on the graphene-metal oxide nanocomposites for supercapacitor technologies and the future perspective of this field of research. A wide range of graphene-metal oxide synthesis techniques have been discussed with a focus on the advancement of nanocomposites with controlled features, including, particle size, morphologies, surface structures, pore size, pore-distributions, etc. Specifically, various nanocomposites and their role in supercapacitor electrodes are discussed with their explicit electrochemical charge-storage mechanisms along with charge-transfer techniques. Furthermore, this analysis demonstrates current trends and future directions in research on graphene-metal oxide nanocomposite electrodes for the performance enhancement in next-generation supercapacitor devices.

Keywords

Graphene, metal oxides, nanocomposites, electrocatalytic electrodes, supercapacitor.

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