ELECTROLYTE AND METHOD FOR ELECTROCHEMICAL REFINING OF SILICON

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The invention discloses an electrolyte for electrochemical refining of a material containing silicon at a temperature above the melting point of silicon in a three layer electrochemical cell. The electrolyte comprises 50-100% by weight of at least one alkaline earth metal fluoride selected from BaF2, CaF2, SrF2 and MgF2. The invention also comprises the method and the electrochemical cell involved in the electrochemical refining of silicon.