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Review article - Peer-reviewed, 2021

A Short Review on the Electrochemical Performance of Hierarchical and Nitrogen-Doped Activated Biocarbon-Based Electrodes for Supercapacitors

Simoes Dos Reis, Glaydson; Pequeno de Oliveira, Helinando; Larsson, Sylvia; Thyrel, Mikael; Lima, Eder Claudio


Cheap and efficient carbon electrodes (CEs) for energy storage systems (ESS) such as supercapacitors (SCs) and batteries are an increasing priority issue, among other things, due to a globally increasing share of intermittent electricity production (solar and wind) and electrification of transport. The increasing consumption of portable and non-portable electronic devices justifies research that enables environmentally and economically sustainable production (materials, processing techniques, and product design) of products with a high electrochemical performance at an acceptable cost. Among all the currently explored CEs materials, biomass-based activated carbons (AC) present enormous potential due to their availability and low-cost, easy processing methods, physicochemical stability, and methods for self-doping. Nitrogen doping methods in CEs for SCs have been demonstrated to enhance its conductivities, surface wettability, and induced pseudocapacitance effect, thereby delivering improved energy/power densities with versatile properties. Herein, a short review is presented, focusing on the different types of natural carbon sources for preparing CEs towards the fabrication of SCs with high electrochemical performance. The influences of ACs' pore characteristics (micro and mesoporosity) and nitrogen doping on the overall electrochemical performance (EP) are addressed.


biomass resources; pore structure; nitrogen doping; supercapacitors

Published in

2021, volume: 11, number: 2, article number: 424

Authors' information

Pequeno de Oliveira, Helinando
Federal University of Vale do São Francisco (UNIVASF)
Larsson, Sylvia
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology
Lima, Eder Claudio
Federal University of Rio Grande do Sul (UFRGS)

Sustainable Development Goals

SDG7 Affordable and clean energy

UKÄ Subject classification

Materials Chemistry
Wood Science
Other Electrical Engineering, Electronic Engineering, Information Engineering

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