| http://www.w3.org/ns/prov#value | - According to the present invention, there is provided an electrolytic cell comprising a negative electrode having as the active material a light metal, an electrolyte and a positive electrode having as the main active material a poly-dicarbon monofluoride represented by the formula (C2 F)n wherein n is an integer and having a crystalline structure in which a layer structure is stacked with an inte
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