Hierarchical cellulose-derived carbon nanocomposites for electrostatic energy storage
Paper in proceedings, 2015

The problem of energy storage and its continuous delivery on demand needs new effective solutions. Supercapacitors are viewed as essential devices for solving this problem since they can quickly provide high power basically countless number of times. The performance of supercapacitors is mostly dependent on the properties of electrode materials used for electrostatic charge accumulation, i.e. energy storage. This study presents new sustainable cellulose-derived materials that can be used as electrodes for supercapacitors. Nanofibrous carbon nanofiber (CNF) mats were covered with vapor-grown carbon nanotubes (CNTs) in order to get composite CNF/CNT electrode material. The resulting composite material had significantly higher surface area and was much more conductive than pure CNF material. The performance of the CNF/CNT electrodes was evaluated by various analysis methods such as cyclic voltammetry, galvanostatic charge-discharge, electrochemical impedance spectroscopy and cyclic stability. The results showed that the cellulose-derived composite electrodes have fairly high values of specific capacitance and power density and can retain excellent performance over at least 2 000 cycles. Therefore it can be stated that sustainable cellulose-derived CNF/CNT composites are prospective materials for supercapacitor electrodes.

activated carbon

nanotube

supercapacitors

graphene

nanofibers

Author

Volodymyr Kuzmenko

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Muhammad Amin

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Arun Bhaskar

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Henrik Staaf

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Vincent Desmaris

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Peter Enoksson

Wallenberg Wood Science Center (WWSC)

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Journal of Physics: Conference Series

17426588 (ISSN) 17426596 (eISSN)

Vol. 660 1 Art. no. 012062- 012062

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Transport

Production

Energy

Subject Categories

Nano Technology

Energy Systems

DOI

10.1088/1742-6596/660/1/012062

More information

Latest update

9/21/2018