Evaluation of corrosion resistance of carbon fibers in hot phosphoric acid

被引：5
|
作者：
Enomoto, M [1 ]
Ohashi, T [1 ]
Hata, T [1 ]
Suzuki, Y [1 ]
Maeda, M [1 ]
Sato, H [1 ]
机构：
[1] TOKYO ELECT POWER CO LTD,ENERGY & ENVIRONM R&D CTR,TSURUMI KU,YOKOHAMA,KANAGAWA 230,JAPAN
来源：
DENKI KAGAKU | 1997年 / 65卷 / 04期
关键词：
PAFC substrate; carbon fiber; corrosion; degree of graphitization;
D O I：
10.5796/kogyobutsurikagaku.65.320
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In order to improve the durability of Phosphoric Acid Fuel Cell (PAFC) substrates, relations between corrosion resistance and physical properties of several carbon fiber samples were examined. It was confirmed that the physical properties and the texture of each sample influenced to the corrosion behavior. PAN based carbon fiber showed surface of onion-skin structure, which was inert in hot phosphoric acid. In addition, high modulus carbon fibers that was high dgree of graphitization brought about only a little weight loss at 1.1V/RHE in phosphoric acid at 210 degrees C. The corrosion behavior of GC (glass like carbon) fiber was unique. The corrosion current for the GC fiber changed only slightly with the rise of potential(0.9-1.1V/RHE) compared with those for other samples.
引用
收藏
页码：320 / 325
页数：6
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