Preparation of a macroscopic, robust carbon-fiber monolith from filamentous fungi and its application in Li-S batteries

被引：119

作者：

Zhang, Liyuan ^{[1
]}

Wang, Yangyang ^{[1
]}

Peng, Bing ^{[1
,2
]}

Yu, Wanting ^{[1
]}

Wang, Haiying ^{[1
,2
]}

Wang, Ting ^{[1
,2
]}

Deng, Baiwan ^{[3
]}

Chai, Liyuan ^{[1
,2
]}

Zhang, Kai ^{[4
]}

Wang, Jiexi ^{[4
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Dept Environm Engn, Changsha 410017, Hunan, Peoples R China

[2] Natl Engn Res Ctr Pollut Control Heavy Met, Changsha 410017, Hunan, Peoples R China

[3] Cent S Univ, Sch Met & Environm, Changsha 410017, Hunan, Peoples R China

[4] Shaanxi Univ Technol, Sch Biol Sci & Engn, Hanzhong 723001, Peoples R China

来源：

GREEN CHEMISTRY | 2014年 / 16卷 / 08期

关键词：

LITHIUM-SULFUR BATTERIES; NANOFIBER MEMBRANES; HIGH-ENERGY; COMPOSITES; AEROGELS; SUPERCAPACITOR; BIOMASS; IDENTIFICATION; SPECTROSCOPY; PERFORMANCE;

D O I：

10.1039/c4gc00761a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new sustainable microorganism-based route is reported for the synthesis of carbon-fiber monolith through using filamentous fungi as feedstock. The fungi are cultured in solution within three days with biomass as nutrient, and fungi concentration reaches as high as 11 mg mL(-1) on an average. Based on the rational control of fungi filtration and drying, fungi membrane or aerogel was obtained. Through pyrolysis in an inert atmosphere, intact carbon-fiber monolith (membrane or aerogel) was formed and its conductivity was more than 1 S cm(-1). The carbon-fiber aerogel and membrane synthesized at 800 degrees C was doped by N (similar to 2.4 at%) and O (similar to 1.3 at%) and displayed a BET surface area of similar to 305 and similar to 20 m(2) g(-1), respectively. Mesopores and macropores were detected in the carbon materials. The carbon-fiber monolith showed promising capability to improve the cyclability and capacity of lithium-sulphur (Li-S) batteries, and are expected to be used as versatile electrode in energy storage.

引用

页码：3926 / 3934

页数：9

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