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Hierarchical cellulose-derived CNF/CNT composites for electrostatic energy storage
Chalmers Tekniska Högskola.
Chalmers Tekniska Högskola.
Chalmers Tekniska Högskola.
Chalmers Tekniska Högskola.
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2016 (English)In: Journal of Micromechanics and Microengineering, ISSN 0960-1317, E-ISSN 1361-6439Article in journal (Refereed) Accepted
Abstract [en]

Today many applications require new effective approaches in 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: 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, energy and power density and can retain excellent performance over at least 2 000 cycles. All of that makes us think that sustainable cellulose-derived composites can be extensively used in future as supercapacitor electrodes.

Place, publisher, year, edition, pages
2016.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kau:diva-45613OAI: oai:DiVA.org:kau-45613DiVA: diva2:957226
Available from: 2016-09-01 Created: 2016-09-01 Last updated: 2016-09-01

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Svensson, Krister
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Karlstad UniversityDepartment of Engineering and Physics
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