ELECTRICALLY CONDUCTIVE SUBSTANCE, METHOD OF PRODUCING ELECTRICALLY CONDUCTIVE SUBSTANCE, AND ELECTRODE, CATALYST AND MATERIAL CONTAINING ELECTRICALLY CONDUCTIVE SUBSTANCE

Disclosed is an electrically conductive substance which comprises a complex containing rubeanic acid ligands and copper ions. The copper ions contained in the complex comprise copper (I) ions. The electrically conductive substance is produced by a production method which comprises mixing a rubeanic acid compound and a copper (I) compound in the presence of a base.