Hierarchical cellulose- derived CNF/CNT composites for electrostatic energy storage
Artikel i vetenskaplig tidskrift, 2016

Today many applications require new effective approaches for energy delivery on demand. Supercapacitors are viewed as essential energy storage devices that can continuously provide quick energy. The performance of supercapacitors is mostly determined by electrode materials that can store energy via electrostatic charge accumulation. This study presents new sustainable cellulose-derived composite electrodes which consist of carbon nanofibrous (CNF) mats covered with vapor-grown carbon nanotubes (CNTs). The CNF/CNT electrodes have high electrical conductivity and surface area: the two most important features that are responsible for good electrochemical performance of supercapacitor electrodes. The results show that the composite electrodes have fairly high values of specific capacitance (101 F g(-1) at 5 mV s(-1)), energy and power density (10.28 W h kg(-1) and 1.99 kW kg(-1), respectively, at 1 A g(-1)) and can retain excellent performance over at least 2000 cycles (96.6% retention). These results indicate that sustainable cellulose-derived composites can be extensively used in the future as supercapacitor electrodes.

electrodes

cellulose

supercapacitors

carbon nanocomposite

Författare

Volodymyr Kuzmenko

Elektronikmaterial och system

Muhammad Amin

Elektronikmaterial och system

Henrik Staaf

Elektronikmaterial och system

Mohammad Mazharul Haque

Elektronikmaterial och system

Arun Bhaskar

Elektronikmaterial och system

M. Flygare

Karlstads universitet

Krister Svensson

Karlstads universitet

Vincent Desmaris

Smoltek AB

Peter Enoksson

Elektronikmaterial och system

Journal of Micromechanics and Microengineering

0960-1317 (ISSN)

Vol. 26 124001-

Styrkeområden

Informations- och kommunikationsteknik

Nanovetenskap och nanoteknik

Transport

Produktion

Energi

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Ämneskategorier

Energiteknik

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1088/0960-1317/26/12/124001