On March 9, 2026, Shenzhen, China - Amidst the global new energy revolution, the safety and endurance of power batteries have become the focus of the industry. Recently, CATL, in collaboration with the Institute of Process Engineering of the Chinese Academy of Sciences, released a new generation of phase change coolant. Its core component, high thermal conductivity ethyl silicone oil, improves battery thermal management efficiency by 30%, providing a technical solution for the "range anxiety" of electric vehicles.


Technological Innovation: Optimization of Nanoscale Molecular Structures
Traditional coolant often uses mineral oil or synthetic ester materials, which have problems such as low thermal conductivity and poor low-temperature fluidity. The new generation of products has achieved three major breakthroughs through nanoscale ethyl silicone oil composite technology:


Ultra high thermal conductivity: The thermal conductivity coefficient reaches 1.2 W/(m · K), which is 40% higher than traditional materials;
Low temperature adaptability: viscosity change rate below 5% at -50 ℃, ensuring battery activity in extremely cold environments;
Long life design: The oxidation induction period (OIT) exceeds 300 minutes, extending the service life to over 8 years.
Market application: from power batteries to energy storage systems
According to tests, the Tesla Model Y equipped with this technology has increased its range by 12% and charging efficiency by 18% in a -20 ℃ environment. At present, this product has been applied to mainstream products such as CATL Kirin batteries and BYD blade batteries, and exported to the European energy storage market. Industry analysts pointed out that "by 2025, the global demand for ethyl silicone oil in the new energy sector will exceed 1200 tons, and China's market share will reach 45%, becoming the world's largest consumer market


Environmental upgrade: biodegradation rate exceeds 90%
Faced with the strict requirements of the EU's "New Battery Law" on material recyclability, the research and development team adopted degradable polyether modification technology, which enabled the coolant's biodegradation rate to reach 92% within 28 days, far exceeding industry standards. The head of the supply chain at CATL stated, "We are collaborating with international giants such as BASF and Dow Chemical to promote the large-scale application of ethyl silicone oil in cutting-edge fields such as solid-state batteries and hydrogen energy storage and transportation


Expert opinion: Organic silicon materials usher in the "superconducting era"
Professor Li Ming from the School of Materials Science and Technology at Tsinghua University pointed out that "Ethyl silicone oil, with its unique molecular flexibility and chemical stability, is transforming from a traditional lubricant to a high-end functional material. With the expansion of 3nm chip packaging, deep-sea exploration equipment and other scenarios, its market demand will continue to explode, and it is expected that the global market size will exceed 5 billion US dollars by 2030