報文
Electrochemical Behavior of Hydride Ion in a LiF-NaF-KF Eutectic Melt
1999 年 67 巻 6 号 p. 643-648
詳細
1999 年 67 巻 6 号 p. 643-648
The electrochemical behavior of hydride ion on a nickel electrode in a LiF-NaF-KF eutectic melt at 773 K has been studied by means of gas chromatography, cyclic voltammetry, chronopotentiometry and chronoamperometry. It was found that hydride ion is anodically oxidized at around 0.45 V vs. M+/M (M = alkali metal) and pure hydrogen gas is generated according to the following reaction:
H− → l/2 H2 + e−
This anodic process is a reversible, one-electron reaction governed by diffusion transport. The diffusion coefficient of hydride ion, 
, was estimated to be around 1 × 10−5 cm2 s−1 at 773 K.
