Leading Chinese EV battery maker unveils solid-state battery

Gotion High-Tech Co Ltd, a leading Chinese electric vehicle battery maker, unveiled its all-solid-state battery dubbed Gemstone on Friday, and looks to start "small-quantity production" by 2027.

With an energy density of 350 Wh/kg, the company claimed Gemstone surpassed mainstream ternary lithium batteries by 40 percent and will enable electric vehicles to easily achieve a lifetime mileage of 1 million kilometers.

Pan Ruijun, chief engineer of the company's all-solid-state battery project, said that the company has achieved breakthrough on the manufacturing techniques of such batteries and has promoted prototype batteries to automotive-grade cell manufacturing. He disclosed that the company is aiming to "produce such frontier technologies in small quantities by 2027, and achieve mass production by 2030".

Currently, China leads in power batteries, including lithium-ion ones, which are widely used in EVs. Compared with lithium-ion batteries that use liquid electrolytes, solid-state batteries use solid electrodes and boast higher theoretical energy density and safety. Solid-state batteries can be categorized into semi-solid-state and all-solid-state types.

The Hefei, Anhui-province-based company also launched its latest generation of Stellary batteries that are able to support a 600-kilometer driving range in 10 minutes of charging, as well as an ultra-fast-charging battery that is able to recharge to 80 percent in 9.8 minutes.

The share price of Gotion High-Tech soared by 10.02 percent and reached its daily limit as of publishing time.