KOH activated lignin based nanostructured carbon exhibiting high hydrogen electrosorption

被引：130

作者：

Babel, K. ^{[2
]}

Jurewicz, K. ^{[1
]}

机构：

[1] Poznan Univ Tech, Inst Chem & Tech Electrochem, PL-60965 Poznan, Poland

[2] Agr Acad Poznan, Inst Chem Wood Technol, PL-60637 Poznan, Poland

来源：

CARBON | 2008年 / 46卷 / 14期

关键词：

D O I：

10.1016/j.carbon.2008.08.005

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：

Carbon materials capable of efficient hydrogen electrosorption at ambient conditions can be used for negative electrode material in chemical power sources, competitive for metallic hydride alloys. This paper describes physical, chemical and electrochemical properties of active carbon (LAC) produced from lignin processed by standard carbonization and KOH activation at temperature of 950 degrees C. Microporous carbon with BET surface of 1946 m(2)/g obtained in such conditions has a complex porous structure with a considerable number of supermicropores and small mesopores (ca. 50%). As a result, efficient hydrogen electrosorption of 510 mA h/g (1.89 wt% in meaning of energy storage) is obtained and favorable discharge characteristics at current densities up to 1 A/g. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1948 / 1956

页数：9

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