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A method of rinsing of KOH solution soaked by composite, hydrogen storage electrode has been applied to evaluate its porosity. The LaNi5 powdered (20÷50 μm) material was mixed with 5% of conducting C-graphite powder. The powders have been bonded with 10% PVDF and pressed isostatically (50 bar) to obtain 0.4 mm thick pellets. After 10 electrochemical charge/discharge cycles (–0.5C/+0.5C) in 6M KOH...
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