Evaluation of activated carbon adsorbent for fuel cell cathode air filtration

被引：14

作者：

Ma, Xiaowei ^{[1
,3
]}

Yang, Daijun ^{[1
,2
]}

Zhou, Wei ^{[1
,2
]}

Zhang, Cunman ^{[1
,2
]}

Pan, Xiangmin ^{[1
,2
]}

Xu, Lin ^{[3
]}

Wu, Minzhong ^{[3
]}

Ma, Jianxin ^{[1
,2
]}

机构：

[1] Tongji Univ, Sch Automat Studies, Shanghai 201804, Peoples R China

[2] Tongji Univ, Clean Energy Automat Engn Ctr, Shanghai 201804, Peoples R China

[3] Shanghai Fuel Cell Vehicle Powertrain Co Ltd, Shanghai 201804, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2008年 / 175卷 / 01期

关键词：

activated carbon; KOH modification; adsorption; PEMFC; air filtration; air contaminants;

D O I：

10.1016/j.jpowsour.2007.08.116

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 effectiveness of a commercial activated carbon modified by KOH (KMAC) was evaluated as adsorbent for purifying NOx and SO2, which are the major contaminants in fuel cell cathode air stream. The N-2 adsorption-desorption isotherms of KMAC samples showed that the surface structure of the activated carbon was changed significantly by KOH impregnation. The sample of KMAC with a loading of 10.1% KOH by weight presented the highest adsorption capacities for both NOx and SO2, which were 96 mg g(-1) and 255 mg g(-1), respectively. A pre-exposure of KMAC to CO2 caused neither effect on the adsorption of NOx nor on the adsorption of SO2. KMAC could fully protect a 250 W proton exchange membrane fuel cell (PEMFC) stack from 1100 ppb of NOx and 250 ppb of SO2 for about 130 h. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：383 / 389

页数：7

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