Improvement of hydrogen absorption kinetics by alkaline surface treatment of hydrogen storage alloys Aiming at a high electric-to-chemical energy conversion efficiency

Hirohisa UCHIDA; Fujio SUZUKI; Koichi YAMASITA; Koji OKADA

doi:10.2978/jsas.13.420

Improvement of hydrogen absorption kinetics by alkaline surface treatment of hydrogen storage alloys

Aiming at a high electric-to-chemical energy conversion efficiency

Hirohisa UCHIDA, Fujio SUZUKI, Koichi YAMASITA, Koji OKADA

著者情報

キーワード: LiOH, NaOH, KOH, Work function, Hydrogen, Initial activation

ジャーナルフリー

2001 年 13 巻 3 号 p. 420-421

DOI https://doi.org/10.2978/jsas.13.420

詳細

抄録

The effect of the pretreatment by NaOH, LiOH and KOH on the initial activation of LaNi_2.5Co_2.5 in electrochemical reactions was investigated. The samples pretreated by alkaline-hydroxides exhibited higher reaction rates than those without pretreatment. The presence of the alloy surface reduces the work function for electrons of the alloy over 1.1eV with K atoms. The electrochemical hydriding rate can be enhanced by decreasing the work function for electrons of alloy.

責任著者(Corresponding author)

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