Exponential growth of electrochemical double layer capacitance in glassy carbon during thermal oxidation

被引：27

作者：

Braun, A

Bärtsch, M

Merlo, O

Schnyder, B

Schaffner, B

Kötz, R

Haas, O

Wokaun, A

机构：

[1] Paul Scherrer Inst, Gen Energy Res Dept, CH-5232 Villigen, Switzerland

[2] Swiss Fed Inst Technol, ETH Zentrum, Dept Chem Engn & Ind Chem, CH-8092 Zurich, Switzerland

[3] Univ Fribourg, Dept Phys Theor, CH-1700 Fribourg, Switzerland

来源：

CARBON | 2003年 / 41卷 / 04期

关键词：

glass-like carbon; activation; microporosity; electrochemical properties;

D O I：

10.1016/S0008-6223(02)00390-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The evolution of the electrochemical double layer capacitance of glassy carbon during thermochemical gas phase oxidation was studied with electrochemical impedance spectroscopy. Particular attention was paid to the initial oxidation stage, during which the capacitance grows exponentially. This stage could be experimentally assessed by lowering the reaction temperature and oxidant partial pressure. After a specific oxidation time the capacitance growth experiences a cross-over to a logistic growth. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：759 / 765

页数：7

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BARTSCH M, 1988, P 38 POW SOURC C CHE

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