Hi-MH has the similar Ni oxide with Ni-Cd as its positive, hydrogen metal as negative, KOH as basis electrolyte. When Ni-MH cell is charged, positive reaction is:
Ni(OH)2-e+OH- ? NiOOH+H20
Negative reaction is: M+H20+e? MH+OH-
Discharged, positive reaction is: NiOOH+H20+ e ? Ni(OH)2+OH-
Negative reaction is:MH+OH - ? M + H20+e
