Hybrid solid-liquid batteries, often referred to in the industry as semi-solid-state batteries, are moving from technical discussion toward broader use in the production of electric vehicles in China, as automakers seek new ways to stand out amid intense price competition.
The technology retains a certain amount of liquid electrolyte while using solid electrolyte materials. With advances in electrode materials and cell design, it is expected to help improve battery safety and cold-weather performance while supporting higher energy density. It is also seen as easier to put into production than fully solid-state batteries.
The shift comes as China's auto industry faces pressure to move beyond price competition. Regulators have introduced guidelines on pricing practices, while automakers are under growing pressure to compete on quality, safety and user experience.
SAIC Motor's MG brand is among the first to bring the technology to more affordable models. Its MG4 and MG 4X models are equipped with hybrid solid-liquid batteries developed with Qingtao Energy. Qingtao said the batteries have undergone durability testing, with the company citing improvements in safety and low-temperature performance.
