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 Laboratory

Muhammad Amin

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Henrik Staaf

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Mohammad Mazharul Haque

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Arun Bhaskar

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

M. Flygare

Karlstad University

Krister Svensson

Karlstad University

Vincent Desmaris

Smoltek AB

Peter Enoksson

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Wallenberg Wood Science Center (WWSC)

Journal of Micromechanics and Microengineering

0960-1317 (ISSN)

Vol. 26 12 124001-

Areas 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

More information

Latest update

9/21/2018