The effect of the graphitization degree of carbon material on corrosion rate

被引：6

作者：

Maeda, M ^{[1
]}

Hagiwara, A ^{[1
]}

Sotouchi, H ^{[1
]}

Sato, H ^{[1
]}

Zhao, X ^{[1
]}

Morikawa, S ^{[1
]}

Kato, O ^{[1
]}

机构：

[1] Tokyo Elect Power Co Ltd, Energy & Environm R& D Ctr, Tsurumi Ku, Yokohama, Kanagawa 2308510, Japan

来源：

ELECTROCHEMISTRY | 1999年 / 67卷 / 02期

关键词：

fuel cell; corrosion rate; graphitization; carbon fibers;

D O I：

10.5796/electrochemistry.67.155

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 cells (PAFC), it is essential to suppress the corrosion rate of carbon, which is one of the important components. In this study, we examined the influence of the degree of graphitization of carbon materials on their corrosion rate in hot phosphoric acid. We found the higher the level of graphitized carbon the lesser corrosion fate. In the case of using a pitch as a precursor, a graphitization temperature of at least 2000 degrees C was needed to suppress the corrosion rate. Treatment at higher temperatures did not affect corrosion suppression. Alternatively, a layer dimension parameter-Lc or La-of over 200 or 300 was needed.

引用

页码：155 / 159

页数：5