The solid-state battery technology is a next-generation, high-capacity energy storage which improves on lithium ion batteries by replacing the liquid or gel-form electrolyte with a solid and conductive material.

The production line can produce 0.1 GWh solid-state batteries per year, which have an energy density of over 400 Wh/kg.

Nan announced the line's operation today, saying the batteries would first be used on new equipment and high-end digital products.

He said the company has engaged with a number of large automobile manufacturers to produce batteries for electric vehicles by 2020 when the company's annual production capacity is expected to reach 0.7 GWh.

"Getting rid of liquid electrolytes can ensure the battery is not flammable or combustible and can even be produced in flexible packs", Nan said.