Cd|KOH|NiOOH

Zn|NH4CI|MnO2

Li|LiClO4|MnO2

Pb|H2SO4|PbO2

H2|KOH|O2

Long-term testing of hydrogen-oxygen alkaline matrix fuel multicell stacks

The paper generalizes a many years' experience in manufacturing and testing of multicell PHOTON stacks based on hydrogen-oxygen alkaline matrix fuel cells. Inter-cell processes effecting the stack lifetime are concerned, the main of which is the current flow between cells along a thin electrolyte film in gas collectors. This process is accompanied by electrolyte redistribution among elements resulting in their polarity reversal, and electrochemical corrosion in metal gas collectors of stacks.

Literature

1. Zajkov Yu. P., Dyomin А. K., Matryonin V. I., Ovchinnikov А. T., Pospelov B. S. Resurs vodorodno-kislorodnogo toplivnogo elementa so shhelochnym matrichnym elektrolitom [Operation life of hydrogen-oxygen fuel cell with alkaline matrix electrolyte]. Elektrokhimicheskaya Energetika [Electrochemical energetics], 2013, vol. 13, no. 4, pp. 213-218 (in Russian).
2. Spravochnik khimika: v 6 t. Redkol.: B. P. Nikol'skij (gl. red.) [i dr.]. Vtoroe izd., pererab. i dop. [Chemist Hand-Book: in 6 vol., B. P. Nikoljsky (editor in chief) [et al.]. 2-ed.]. Moscow, Leningrad, Chemistry Publ., 1964, vol. 3, pp. 806-807 (in Russian).
3. Spravochnik po elektrokhimii, pod red. А. M. Sukhotina. [Electrochemistry Hand-Book. Ed. A. M. Suchotin]. Leningrad, Chemistry Publ., 1981, pp. 424 (in Russian).
4. Khozyashev S. I. Katalizator kislorodnogo ehlektroda dlya toplivnogo elementa s shhelochnym elektrolitom [Catalyst oxydgen electrode alkaline fuel cell]. Patent RF, no. 2136081, MPK HO/M4/90, H01M 8/08, B 01 J23/52 (in Russian).

Heading: