SVOLT announced on July 19 that its battery lab has developed China’s first batch of 20Ah sulfide-based all-solid-state prototype batteries. The battery cells feature energy density as high as 350-400 Wh/kg, and have passed experiments such as acupuncture and a 200°C hot box. After their mass production and application, electric vehicles could potentially achieve a cruising range of more than 1,000 km.
Unlike the lithium-ion and lithium-ion polymer batteries in common use today, solid-state batteries significantly increase the energy density of lithium batteries by using solid electrodes and electrolytes, instead of the electrolytes of previous lithium batteries.
Solid state batteries boast more stable electrolyte mechanical and chemical characteristics, and have a greatly improved static and cycle life. These batteries are capable of withstanding drastic temperature variation, maintaining discharge power from -50ºC to 200ºC. Therefore, they can greatly alleviate the problem of battery capacity decay in winter. Energy density is greatly improved and is expected to reach two to 10 times that of current ternary lithium batteries.
According to monthly data from the China Automotive Power Battery Industry Innovation Alliance, in June, China’s power battery output totaled 41.3 GWh, up 171.7% year-on-year and 16.1% quarter-on-quarter. Specifically, CATL ranked first in terms of loading capacity, accounting for 49.6%, and SVOLT ranked seventh, accounting for 2.11%.
On June 23, CATL released its third-generation CTP technology product, the Kirin battery, and announced it would mass-produce and release it next year. Kirin Battery has increased the battery system integration efficiency to 72% and has increased the system energy density to 255Wh/kg for the 1000 km range.