CuInSe2 thin films prepared by electrodeposition method can produce periodically electrochemistry oscillation phenomenna during H2O2 cathodic reduction. The dynamic current-voltage curve from-1.80V to 0.00V(vs.SCE) appears a pronounced current wave. When the potential is set in the oscillating potential region, the cell response may be accounted for, in the equivalent circuit representation, by the presence of negative resistances and inductances with A.C. methods. The negative resistances and inductances may indicate an autocatalytio reaction with an adsorbed intermediate.

Key words: HYDROGEN PEROXIDE, ELECTRO-DEPOSITION, CYCLOVOLTAMGRAPH, ELECTRODE REACTION