Pore structure and electrochemical performances of tannin-based carbon cryogels

被引：50

作者：

Amaral-Labat, G. ^{[1
]}

Szczurek, A. ^{[1
]}

Fierro, V. ^{[1
]}

Stein, N. ^{[2
]}

Boulanger, C. ^{[2
]}

Pizzi, A. ^{[3
]}

Celzard, A. ^{[1
]}

机构：

[1] Nancy Univ, Inst Jean Lamour, Dept Chim & Phys Solides & Surfaces, CNRS,UMR 7198,UPV Metz,ENSTIB, F-88051 Epinal 9, France

[2] Nancy Univ, Inst Jean Lamour, Dept Chim & Phys Solides & Surfaces, CNRS,UMR 7198,UPV Metz, F-57078 Metz, France

[3] Nancy Univ, ENSTIB, LERMAB, F-88051 Epinal 9, France

来源：

BIOMASS & BIOENERGY | 2012年 / 39卷

关键词：

Carbon cryogel; Tannin; Pore structure; Supercapacitor; Cyclic voltammetry; Specific capacitance; ACTIVATED CARBONS; RESORCINOL-FORMALDEHYDE; ELECTRODE MATERIAL; POROUS CARBON; CAPACITANCE PROPERTIES; AQUEOUS-SOLUTIONS; SURFACE-AREA; AEROGELS; SUPERCAPACITORS; STORAGE;

D O I：

10.1016/j.biombioe.2012.01.019

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Carbon cryogels have been obtained by freeze-drying and pyrolysis of a family of tannin - formaldehyde organic gels prepared at different pHs. Such new materials, cheap and derived from biomass at a mass fraction of 0.8, were completely characterised in terms of pore structure and density. Samples obtained at pH higher than 6 were extremely light-weight and presented surface areas higher than 1200 m(2) g (-1). Tested as electrodes for electric double-layer capacitors, specific capacitances as high as 100 F g (1) were obtained and an ideal, purely capacitive, behaviour was always evidenced. Correlations have been observed between capacitance and micropore volumes, unambiguously suggesting that the latter mainly contribute to the capacitance. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：274 / 282

页数：9

共 52 条

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