UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Bacterial cellulose as source for activated nanosized carbon for electric double layer capacitors

Lee, K-Y; Qian, H; Tay, FH; Blaker, JJ; Kazarian, SG; Bismarck, A; (2013) Bacterial cellulose as source for activated nanosized carbon for electric double layer capacitors. Journal of Materials Science , 48 (1) 367 - 376. 10.1007/s10853-012-6754-y. Green open access

[thumbnail of Lee_Bacterial_cellulose_as_source.pdf] PDF
Lee_Bacterial_cellulose_as_source.pdf

Download (1MB)

Abstract

A nanosized carbonaceous material was derived from bacterial cellulose (BC). BC, which is produced by bacteria as nanosized material, possesses high degree of crystallinity of 90 %, was pyrolysed at 950 °C and physically activated with CO2 to produce a nanosized activated carbon material. The pyrolysis of BC yielded a carbonaceous material (carbon yield of between 2 and 20 %) with a relatively low D- to G-band ratio (between 2.2 and 2.8), indicating that the carbonaceous material possesses a graphitic structure. Two different BC materials were pyrolysed—a loose fibrous (freeze-dried) and dense paper form. It was observed that a carbon nanofibre-like material was produced by the pyrolysis of the loose fibrous form of BC. The electric double layer (EDL) capacitance and the area-normalised specific capacitance in K2SO4 solution were as high as 42 F g−1 and 1,617 F cm−2, respectively. The EDL capacitance was also compared to commercially available activated carbon (YP-50F).

Type: Article
Title: Bacterial cellulose as source for activated nanosized carbon for electric double layer capacitors
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s10853-012-6754-y
Publisher version: http://dx.doi.org/10.1007/s10853-012-6754-y
Language: English
Additional information: This is the author's accepted manuscript version of this published article.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
URI: https://discovery.ucl.ac.uk/id/eprint/1407427
Downloads since deposit
918Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item