NOVELTY - Producing pure silicon from an electrolyte (4) comprises: (i) heating the electrolyte in a first crucible (2) to form a molten electrolyte; and (ii) applying electrolysis to the molten electrolyte by providing a potential difference between an anode (5) and a cathode (7), or a crucible lining (3) is arranged inside the first crucible to substantially separate the molten electrolyte from an inner peripheral wall of the first crucible as electrolysis is applied and pure silicon produced as a result of the electrolysis is soluble with the anode to form an alloy.    USE - The method is useful for producing: pure silicon, which is useful in a solar cell, a battery and a crucible liner; and an electrical-grade silicon material for forming an integrated circuit element (all claimed).    ADVANTAGE - The method is cost-effective for producing silicon by using induction furnace, which provides dual function as a heat source and as a stirring device.    DETAILED DESCRIPTION - Producing pure silicon from an electrolyte (4) comprises: (i) heating the electrolyte in a first crucible (2) to form a molten electrolyte; and (ii) applying electrolysis to the molten electrolyte by providing a potential difference between an anode (5) and a cathode (7), which are adapted for electrical/ionic communication with the molten electrolyte, where the molten electrolyte is stirred as electrolysis being applied and pure silicon produced as a result of the electrolysis is soluble with the anode to form an alloy, or a crucible lining (3) is arranged inside the first crucible to substantially separate the molten electrolyte from an inner peripheral wall of the first crucible as electrolysis is applied and pure silicon produced as a result of the electrolysis is soluble with the anode to form an alloy. INDEPENDENT CLAIMS are included for:    (1) an apparatus for producing pure silicon from an electrolyte including a first crucible for receiving the electrolyte, a heat source for heating the electrolyte in the first crucible to form the molten electrolyte, the anode and the cathode, where the electrolysis is able to be applied to the molten electrolyte when a potential difference is provide between the anode and the cathode, and a stirring device for stirring the molten electrolyte when electrolysis being applied to the molten electrolyte, or a crucible lining arranged inside the first crucible to substantially separate the molten electrolyte from an inner peripheral wall of the first crucible as electrolysis being applied to the molten electrolyte, where pure silicon produced as a result of the electrolysis is soluble with the anode to form an alloy;    (2) method of segregating pure silicon from an alloy containing at least one of a copper, gold, silver, zinc and a magnesium material alloyed with pure silicon particles, including either forming the alloy into at least one of a tape and a powder, and applying electrolysis to the tape or powder, or forming the alloy into at least one of a tape and a powder, flushing the tape or powder with at least one of hydrochloride gas and chlorine gas, and removing copper chloride resulting by rinsing with a solution in which copper chloride is soluble, or, by applying a mechanical or magnetic removal process, where pure silicon particles are able to be segregated from the alloy in the form of nano-sized pure silicon particles;    (3) an apparatus for segregating pure silicon from an alloy containing at least one of a copper, gold, silver, zinc and a magnesium material alloyed with pure silicon particles, including either an apparatus for forming the alloy into the tape and the powder, and an apparatus for applying electrolysis to the tape or powder, or an apparatus for forming the alloy into at least one of a tape and a powder, an apparatus for flushing the tape or powder with at least one of hydrochloride gas and chlorine gas, and an apparatus configured for removing copper chloride resulting from the flushing with hydrochloride or chlorine gas, by rinsing with a solution in which copper chloride is soluble, or by applying a mechanical or magnetic removal process, where pure silicon particles are able to be segregated from the alloy in the form of nano-sized pure silicon particles;    (4) a pure silicon produced by the method; and    (5) a battery including the pure silicon.    DESCRIPTION OF DRAWING(S) - The figure shows a side cut-away view of an apparatus for producing pure silicon in accordance with an embodiment of the present invention.    First crucible (2)    Crucible lining (3)    Electrolyte (4)    Anode (5)    Cathode. (7)