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Aspergillus flavus Conidia-derived Carbon/Sulfur Composite as a Cathode Material for High Performance Lithium-Sulfur Battery.

ABSTRACT: A novel approach was developed to prepare porous carbon materials with an extremely high surface area of 2459.6?m(2)g(-1) by using Aspergillus flavus conidia as precursors. The porous carbon serves as a superior cathode material to anchor sulfur due to its uniform and tortuous morphology, enabling high capacity and good cycle lifetime in lithium sulfur-batteries. Under a current rate of 0.2?C, the carbon-sulfur composites with 56.7?wt% sulfur loading deliver an initial capacity of 1625?mAh g(-1), which is almost equal to the theoretical capacity of sulfur. The good performance may be ascribed to excellent electronic networks constructed by the high-surface-area carbon species. Moreover, the semi-closed architecture of derived carbons can effectively retard the polysulfides dissolution during charge/discharge, resulting in a capacity of 940?mAh g(-1) after 120 charge/discharge cycles.

SUBMITTER: Xu M

PROVIDER: S-EPMC4702123 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Aspergillus flavus Conidia-derived Carbon/Sulfur Composite as a Cathode Material for High Performance Lithium-Sulfur Battery.

Xu Maowen M Jia Min M Mao Cuiping C Liu Sangui S Bao Shujuan S Jiang Jian J Liu Yang Y Lu Zhisong Z

Scientific reports 20160106

A novel approach was developed to prepare porous carbon materials with an extremely high surface area of 2459.6 m(2)g(-1) by using Aspergillus flavus conidia as precursors. The porous carbon serves as a superior cathode material to anchor sulfur due to its uniform and tortuous morphology, enabling high capacity and good cycle lifetime in lithium sulfur-batteries. Under a current rate of 0.2 C, the carbon-sulfur composites with 56.7 wt% sulfur loading deliver an initial capacity of 1625 mAh g(-1) ...[more]

PMID: 26732547

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