Our research team has developed a new monitoring technology to guard the "health" of lithium-ion batteries in our country.

Professor Pan Tingrui and Researcher Chang Yu's team from the University of Science and Technology of China, along with Professor Tang Yongbing and Researcher Zhang Fan's team from the Shenzhen Institute of Advanced Technology of the Chinese Academy of Sciences, have developed a long-lasting and stable lithium-ion battery in situ expansion force monitoring technology. The related research results were recently published in the "National Science Review". Lithium-ion batteries have become the core of electric vehicles and energy storage systems due to their high energy density and long cycle life. However, issues such as lithium dendrite growth and solid electrolyte interface membrane growth threaten the safety and service life of batteries. In response to this challenge, the research team has developed a new in situ monitoring technology based on integrated sensor technology, using the battery's own electrolyte and materials to build a sensing interface, achieving high-precision pressure monitoring without the need for additional encapsulation. This structure is not only highly compatible with battery materials but also solves the stability problem of traditional flexible pressure sensors in corrosive environments. Experiments have shown that the integrated sensor technology can work stably in the battery for over a month, capturing the irreversible deposition of lithium dendrites through asymmetry in pressure curve and peak changes. The researchers introduced that this technology opens up a new path for intelligent battery design, and its low cost, high precision, and long lifespan characteristics make it particularly suitable for vehicle battery management systems.