Hierarchical cellulose- derived CNF/CNT composites for electrostatic energy storage
Journal article, 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.
supercapacitors
cellulose
electrodes
carbon nanocomposite
Author
Volodymyr Kuzmenko
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
Muhammad Amin
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
Henrik Staaf
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
Mohammad Mazharul Haque
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
Arun Bhaskar
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
M. Flygare
Karlstad University
Krister Svensson
Karlstad University
Vincent Desmaris
Smoltek AB
Peter Enoksson
Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems
Wallenberg Wood Science Center (WWSC)
Journal of Micromechanics and Microengineering
0960-1317 (ISSN) 13616439 (eISSN)
Vol. 26 12 124001- 124001Areas of Advance
Information and Communication Technology
Nanoscience and Nanotechnology
Transport
Production
Energy
Driving Forces
Sustainable development
Innovation and entrepreneurship
Subject Categories
Energy Engineering
Infrastructure
Nanofabrication Laboratory
DOI
10.1088/0960-1317/26/12/124001