Issue 12, 2020

Overview of transition metal-based composite materials for supercapacitor electrodes

Abstract

Supercapacitors (SCs) can bridge the gap between batteries and conventional capacitors, playing a critical role as an efficient electrochemical storage device in intermittent renewable energy sources. Transition metal-based electrode materials have been investigated extensively as a class of electrode materials for SC application, but they have some limitations due to the sluggish ion/electron diffusion and inferior electronic conductivity, restricting their electrochemical performances towards energy storage. Developing advanced transition metal-based electrode materials is crucial for high energy density along with high specific power and fast charging/discharging rates towards high performance SCs. In this review, we highlight the state-of-the-art of transition metal-based electrode materials (transition metal oxides and their composites, transition metal sulfides and their composites, and transition metal phosphides and their composites), focusing on specific morphologies, components, and power characteristics. We also provide future prospects for transition metal-based electrode materials for SCs and hope this review will shed light on the achievement of higher performance and hold great promise in vast applications for future energy storage and conversion.

Graphical abstract: Overview of transition metal-based composite materials for supercapacitor electrodes

Article information

Article type
Review Article
Submitted
13 Jul 2020
Accepted
15 Sep 2020
First published
17 Sep 2020
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2020,2, 5516-5528

Overview of transition metal-based composite materials for supercapacitor electrodes

M. Cui and X. Meng, Nanoscale Adv., 2020, 2, 5516 DOI: 10.1039/D0NA00573H

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