Oxygen/phosphorus co-doped porous carbon from cicada slough as high-performance electrode material for supercapacitors.

ABSTRACT: Synthesizing high-performance electrode materials plays a vital role in fabricating advanced supercapacitors. Heteroatom doping has been proved to be effective in enhancing the electrochemical properties of carbon-based electrodes. Herein, we report an O, P co-doped porous carbon (PC) originated from waste biomaterials, cicada sloughs. The PC possesses meso-/microporous structure with a large specific surface area (1945?m²·g^-1) and a high O, P co-doping ratio of 18 wt.%. These superior factors together enable it to deliver high specific capacitance (295?F·g^-1 in 6?M KOH and 291?F·g^-1 in 1?M H₂SO₄), good cycling stability (100% capacitance retention after 10000 cycles in 1?M H₂SO₄) and rate performance. Therefore, from the respects of environment friendliness and cost effectivity, obtaining heteroatom doped carbons from the nature might be better compared to pyrolyzing heteroatom-containing chemicals.

SUBMITTER: Chen B 

PROVIDER: S-EPMC6443656 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature