Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Sustainable carbon nanofi… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Sustainable carbon nanofibers/nanotubes composites from cellulose as electrodes for supercapacitors

Artikel i vetenskaplig tidskrift
Författare Volodymyr Kuzmenko
Olga Naboka
Mohammad Mazharul Haque
Henrik Staaf
Gert Göransson
Paul Gatenholm
Peter Enoksson
Publicerad i Energy
Volym 90
Nummer/häfte 2
Sidor 1490-1496
ISSN 0360-5442
Publiceringsår 2015
Publicerad vid Institutionen för kemi och molekylärbiologi
Sidor 1490-1496
Språk en
Länkar dx.doi.org/10.1016/j.energy.2015.06...
Ämnesord Renewable resources; carbon nanostructures; energy storage
Ämneskategorier Elektrokemi, Materialkemi, Kompositmaterial och -teknik, Ytbehandlingsteknik, Funktionella material, Nanoteknik

Sammanfattning

Supercapacitors are efficient energy storage devices with long lifetime and safe service. Their effectiveness, to a big extent, is dependent on electrode materials used for accumulation of energy in form of electrostatic charges. Over the last decades, variety of carbonaceous electrode materials has been used in supercapacitors. Mostly the production of such electrodes is still oriented on unsustainable fossil fuels as precursors instead of sustainable renewable resources. In this study, freestanding carbonaceous electrode materials for supercapacitors were derived from cellulose, the most abundant renewable resource. They were synthesized via carbonization of fibrillar cellulose impregnated with CNTs (carbon nanotubes). The ensuing composite materials consisted of a CNF (carbon nanofiber) scaffold (fiber diameter in the range of 50-250 nm) covered with layers of CNTs (tube diameter in the range of 1-20 nm). Moreover, these composites were tested as electrode materials for supercapacitors. Incorporation of the CNTs into the CNFs improved electrical conductivity and also increased the surface area of the produced composite materials, which led to high specific capacitance values (up to 241 F/g), cyclic stability, and power density of these materials in electrochemical measurements. These results suggest that cellulose-derived original CNF/CNT composites are sustainable and efficient carbonaceous electrodes for supercapacitors.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?