Ni1.2Mn0.4Cr0.4Zr: H Diffusion

Micro-electrochemical studies were made of H storage materials (table 10)by using a micro-electrode technique. A C-fiber filament was placed in contact with single particles of the alloys, in 1M KOH solution, by using a micromanipulator. In this way, cyclic voltammetric, potential step experiments and  in situ  X-ray diffraction experiments could be carried out. The current responses were recorded as a function of time were analyzed by using a spherical diffusion model.

T.Nishina, H.Ura, I.Uchida: Journal of the Electrochemical Society, 1997, 144[4], 1273-8

Table 10

Diffusivity of H in H-Storage Alloys