Capacitive effects of nitrogen doping on cellulose-derived carbon nanofibers
Artikel i vetenskaplig tidskrift, 2015

Carbons with valuable electrochemical characteristics are among the most convenient electrode materials used for energy storage. At the moment, their production is mostly reliant on unsustainable fossil fuels. A preferential sustainable production of enhanced carbonaceous electrodes can be achieved with more extensive utilization of abundant renewable resources instead of fossils. In this study, nitrogen-doped carbon nanofibers (CNFs) were synthesized from cellulose, the most abundant renewable resource, via consecutive steps of cellulose acetate electrospinning, subsequent deacetylation to cellulose, impregnation with nitrogen-containing additive (ammonium chloride), and carbonization. Results of material characterization showed that the carbonization of functionalized cellulose samples led to formation of CNFs doped with 4–5.6 at.% of nitrogen. In comparison with pristine CNFs N-doped samples had a slightly lower specific surface area, but higher conductivity and hydrophilicity. Moreover, electrochemical measurements indicated that the enhanced N-doped materials had about 2.5 times higher specific capacitance which was increasing throughout 1000 charge–discharge cycles. These results suggest that nitrogen doping method used in this study has a positive pseudocapacitive effect on the electrochemical performance of carbonized cellulose materials.

Surfaces

Electrochemical properties

Nanostructures

Författare

Volodymyr Kuzmenko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Olga Naboka

National Research Council Canada

Henrik Staaf

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Mohammad Mazharul Haque

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Gert Göransson

Göteborgs universitet

Per Lundgren

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Paul Gatenholm

Wallenberg Wood Science Center (WWSC)

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Peter Enoksson

Wallenberg Wood Science Center (WWSC)

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Materials Chemistry and Physics

0254-0584 (ISSN)

Vol. 160 59-65

Drivkrafter

Hållbar utveckling

Styrkeområden

Nanovetenskap och nanoteknik

Transport

Produktion

Energi

Materialvetenskap

Ämneskategorier

Materialkemi

Nanoteknik

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1016/j.matchemphys.2015.04.006