Cd|KOH|NiOOH

Zn|NH4CI|MnO2

Li|LiClO4|MnO2

Pb|H2SO4|PbO2

H2|KOH|O2

Improvement of electrochemical behavior of amorphous silicon via preliminary heat treatment

Thin-film amorphous silicon electrodes, subjected to various pretreatment have been tested in galvanostatic and potenciodynamic modes. Preliminary heat treatment of silicon electrodes in nitrogen atmosphere was established to lead to some decrease in discharge capacity and insignificant decrease in degradation upon cycling. Preliminary annealing of silicon electrodes in vacuum at 480°C results in increase of discharge capacity and some decrease of degradation upon cycling. Silicon electrodes with thickness about 1 micron annealed in vacuum have discharge capacity about 1200 mA·h/g.

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