As the evolution of battery technologies in the electric vehicle sector continues unabated, Xiaomi has announced that it has joined the race to develop solid-state batteries. The company’s newly announced patent targets the two biggest problems in this area — ionic conductivity and energy density. Xiaomi’s solution shows that these technical hurdles can be overcome thanks to a multilayer electrode structure.

Xiaomi to start designing solid-state batteries

The structure described in the patent is combined with a polymer-based solid electrolyte containing active materials, conductive additives, binders, and metal salts. The electrolyte penetrates the electrode layer throughout its thickness, shortening ion transport paths and improving battery performance.

Xiaomi’s approach provides advantages not only in technical terms but also in terms of production. The company states that the design is compatible with existing lithium-ion battery production lines. This is seen as an important step that can facilitate the transition of the technology from laboratory environment to commercial production.

Xiaomi claims that the prototype it developed offers 77.8% volume efficiency with the Cell-to-Body design. The battery pack, which is only 120 mm high, provides more efficient space usage and more balanced weight distribution in the vehicle floor.

According to technical data, it is stated that this battery can provide a CLTC range of over 1,200 km, and can also provide driving up to 800 km with a 10-minute charge. Many automotive and technology giants in the world are working on similar technologies.

However, as is the case in the sector in general, Xiaomi is not expected to commercialize this technology in the short term. Analysts state that the system developed by the company is unlikely to enter mass production before 2030.