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首页> 外文期刊>Journal of power sources >Evaluation of activated carbon adsorbent for fuel cell cathode air filtration
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Evaluation of activated carbon adsorbent for fuel cell cathode air filtration

机译：燃料电池阴极空气过滤用活性炭吸附剂的评估

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摘要

The effectiveness of a commercial activated carbon modified by KOH (KMAC) was evaluated as adsorbent for purifying NO_x and SO_2, 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 NO_x and SO_2, which were 96 mg g~(-1) and 255 mg g~(-1), respectively. A pre-exposure of KMAC to CO_2 caused neither effect on the adsorption of NO_x nor on the adsorption of SO_2. KMAC could fully protect a 250 W proton exchange membrane fuel cell (PEMFC) stack from 1100 ppb of NO_x and 250 ppb of SO_2 for about 130 h.
机译：评价了用KOH（KMAC）改性的商用活性炭作为净化NO_x和SO_2的吸附剂的有效性，NO_x和SO_2是燃料电池阴极空气流中的主要污染物。 KMAC样品的N_2吸附-解吸等温线表明，通过KOH浸渍，活性炭的表面结构发生了显着变化。负载10.1％KOH的KMAC样品对NO_x和SO_2的吸附能力最高，分别为96 mg g〜（-1）和255 mg g〜（-1）。 KMAC预先暴露在CO_2上既不会影响NO_x的吸附，也不会影响SO_2的吸附。 KMAC可以充分保护250 W质子交换膜燃料电池（PEMFC）堆免受1100 ppb的NO_x和250 ppb的SO_2的作用约130小时。

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