| As an environmental-friendly and advanced metallurgical technology, electro-deoxidationgive rise to a great deal of attention increasingly in the procedure of molten salt.Electro-deoxidation in molten salt process as a kind of environmental friendly metallurgy technology.Thanks to the characteristic of its shorttechnological process, high purity and low productioncost，thismethodis widelyusedin thestudyofalloycoating.Si-Mo alloy coating was successfully prepared by the electro-deoxidation in moltensalt with the SiO2sol as raw material. The TiO2-MnO2mixed oxides were regarded as thematerial of synthesis TiMn2by the electrochemical deoxidation. ZrC alloy was alsoproducedvia the same methodwiththeZrO2and Casrawmaterial. Somekey parameters, e.g.electrolytic voltage, electrolytic time, were studied in detail. The reaction mechanism wasanalyzed by the Cyclic Voltammetry. The TiMn2hydrogen storage properties was tested.The Si-Mo alloy coating was prepared in a molten CaCl2salt at3.1V for3h. TheSiO2solwascoatedontheMopellet for3layers andthecoatingwas processedat850℃in Ar.According to the analysis of Si-Mo reaction mechanism,charging and discharging currentwas declined with the scanning cycles and meanwhile increased with the scanning rategradually, so the SiO2electrode deoxygenation was irreversible. TiMn2alloy was producedin a molten CaCl2electrolyte at900℃at3.1V for7h, with mixed TiO2, MnO2sinteredpellets at900℃. The maximum discharge capacity of the alloy was280.3mA·h·g-1, after200charge-discharge cycles the discharge capacity was258.7mA·h·g-1, only92.29%ofthe maximum value. ZrC alloy was prepared in the850℃molten CaCl2salt at3.1V for7h with mixed ZrO2-C(1:2molar ratio). With the increase of the C content, ZrO2wasreduced thoroughly. The electrochemical reaction rate was reduced by improving thesingtering temperature. Electric deoxidation reaction was promoted by increasingelectrolysis voltage and molten salt temperature and extending the electrolysis time. |
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