High ion adsorption densities of site-selective nitrogen doped carbon sheets prepared from natural lignin.

ABSTRACT: Carbon fibers and sheets were prepared from jet-milled natural chitin and cellulose samples, and from natural lignin sample using ice-templating technique, respectively. Nitrogen doping treatments using melamine were also performed for the carbon fibers and sheets. Electric double layer capacitor (EDLC) electrode properties of the prepared carbon fibers and sheets including the nitrogen doped samples were investigated with aqueous (sulfuric acid) and organic (tetraethylammonium tetrafluoroborate in propylene carbonate) electrolytes. It was found that the nitrogen doped lignin carbon sheets having very small specific surface area of 66 m² g^-1 show very high EDLC capacitances of 227 F g^-1 and 80 F g^-1 determined by charge-discharge measurements at

SUBMITTER: Ishii Y 

PROVIDER: S-EPMC9076508 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature