"Nickel sulphate and cobalt sulphate: these are the sexy commodities that we cannot live with out," Friedland said. While demand for coal and iron ore will stagnate, copper usage will continue to rise to meet environmental standards and reduce pollution, he said. This view from Robert Friedland is so profound as we enter a paradigm shift in automotive disruptive technology . Cobalt sulphate use is the key to lithium ion battery success.