Activated Carbon Bio-Xerogels as Electrodes for Super Capacitors Applications

被引：28

作者：

Zapata-Benabithe, Zulamita ^{[1
]}

Diossa, Giovanna ^{[1
,2
]}

Castro, Chris. D. ^{[2
]}

Quintana, German ^{[2
]}

机构：

[1] Univ Pontificia Bolivariana, Fac Ingn Quim, Grp Energia & Termodinam, Circular 1 70-01, Medellin 050031, Colombia

[2] Univ Pontificia Bolivariana, Fac Ingn Quim, Grp Pulpa & Papel, Circular 1 70-01, Medellin 050031, Colombia

来源：

PROCEEDING OF 4TH INTERNATIONAL CONFERENCE ON PROCESS ENGINEERING AND ADVANCED MATERIALS (ICPEAM 2016) | 2016年 / 148卷

关键词：

Lignin; Activated carbon xerogels; Supercapacitors; PEM FUEL-CELLS; CHEMICAL ACTIVATION; SURFACE-CHEMISTRY; ORGANIC AEROGELS; LIGNIN; FORMALDEHYDE; CATALYSTS;

D O I：

10.1016/j.proeng.2016.06.470

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The objectives of this work are to evaluate the use of the lignin as precursor of carbon xerogels and to determinate the effect of porosity and surface functionalities on the electrochemical capacitance of the activated carbon bio-xerogels. Lignin replaced the resorcinol at a mass fraction between 0 and 0.086 (wt%). The organic carbon xerogels are H3PO4-activated at H3PO4/carbon ratio of 1/1 at 450 degrees C to increase pore volume and surface area. Gravimetric capacitance values at 0.125 A/g, in a three-cell configuration, ranged from 138 to 234 F/g. Sample with a 0.086 content of lignin showed the best electrochemical behavior, which was associated with the high BET surface area (1243 m(2)/g), high volume (W-0(N-2)= 0.518 cm(3)/g) and width micropores (L-0(N-2)= 1.43 nm) and to the presence of pseudo faradic effects. (C) 2016 The Authors. Published by Elsevier Ltd.

引用

页码：18 / 24

页数：7

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