Preparation of highly porous binderless activated carbon electrodes from fibres of oil palm empty fruit bunches for application in supercapacitors

被引：305

作者：

Farma, R. ^{[1
,2
]}

Deraman, M. ^{[1
]}

Awitdrus, A. ^{[1
,2
]}

Talib, I. A. ^{[1
]}

Taer, E. ^{[1
,2
]}

Basri, N. H. ^{[1
]}

Manjunatha, J. G. ^{[1
]}

Ishak, M. M. ^{[1
]}

Dollah, B. N. M. ^{[1
]}

Hashmi, S. A. ^{[3
]}

机构：

[1] Univ Kebangsaan Malaysia, Fac Sci & Technol, Sch Appl Phys, Bangi 43600, Selangor, Malaysia

[2] Univ Riau, Fac Math & Nat Sci, Dept Phys, Pekanbaru 28293, Riau, Indonesia

[3] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 132卷

关键词：

Biomass; Chemical activation; Physical activation; Activated carbon electrode; Supercapacitor; PORE-SIZE; PERFORMANCE; NANOTUBES; MONOLITH; GRAIN;

D O I：

10.1016/j.biortech.2013.01.044

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Fibres from oil palm empty fruit bunches, generated in large quantities by palm oil mills, were processed into self-adhesive carbon grains (SACG). Untreated and KOH-treated SACG were converted without binder into green monolith prior to N-2-carbonisation and CO2-activation to produce highly porous binderless carbon monolith electrodes for supercapacitor applications. Characterisation of the pore structure of the electrodes revealed a significant advantage from combining the chemical and physical activation processes. The electrochemical measurements of the supercapacitor cells fabricated using these electrodes, using cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge techniques consistently found that approximately 3 h of activation time, achieved via a multi-step heating profile, produced electrodes with a high surface area of 1704 m(2) g(-1) and a total pore volume of 0.889 cm(3) g-1, corresponding to high values for the specific capacitance, specific energy and specific power of 150 F g(-1), 4.297 Wh kg(-1) and 173 W kg(-1), respectively. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：254 / 261

页数：8

共 36 条

[1]

Awitdrus, 2010, SAINS MALAYS, V39, P83

[2] Electrochemically activated carbon micro-electrode arrays for electrochemical micro-capacitors [J].