Contemporary Amperex Technology Ltd (CATL) has taken a leap forward in commercialising sodium-ion batteries, signing a large supply contract with an energy-storage system (ESS) provider amid high demand for power infrastructure after the global oil shock. The world’s largest electric vehicle (EV) and ESS battery maker announced on Monday that it would deliver 60 gigawatt-hours (GWh) of sodium-ion batteries to Beijing HyperStrong Technology over three years in a landmark deal for the new battery...