On April 22, 2025, Shanghai - With the acceleration of global energy structure transformation, the application of organic silicon materials in new energy fields such as photovoltaics, wind power, and energy storage has shown explosive growth due to their high temperature resistance, corrosion resistance, and strong insulation properties. According to statistics, the consumption of organic silicon in China's new energy sector will reach 850000 tons in 2024, a year-on-year increase of 34%. The market size will exceed 98 billion yuan, and it is expected to surpass the 100 billion yuan mark for the first time in 2025.


Photovoltaic industry: surge in demand for adhesives and packaging materials
In the production of photovoltaic modules, organic silicone adhesive is used to fix the solar cells and glass backboards, and its weather resistance directly affects the 25 year service life of the modules. The "two-component additive silicone gel" developed by a certain enterprise can maintain elasticity in environments ranging from -50 ℃ to 200 ℃ and has been applied in desert photovoltaic power plant projects. In addition, transparent silicone encapsulation materials are gradually replacing traditional EVA film, with a light transmittance of 93%, which can improve the power generation efficiency of components by 1.2%.


Wind power field: blade coating and sealing upgrade
The single unit capacity of offshore wind power has exceeded 20MW, which puts higher demands on the anti salt spray and anti ultraviolet performance of the blades. The "self-healing silicon-based coating" developed by a certain laboratory can form a dynamic protective film on the surface of the blade. When the coating is worn by sand and dust, the internal microcapsules will release repair agents to automatically fill the cracks. This technology has been applied in the first deep-sea offshore wind farm in China, extending the blade maintenance cycle from 1 year to 5 years.


Energy storage system: Thermal conductive silicone and insulation materials are key
Thermal runaway of lithium-ion batteries is the biggest safety hazard for energy storage. A new type of thermal conductive silicone gasket has a thermal conductivity of 8W/m · K, which is three times higher than traditional products. It can quickly transfer the heat from the battery cell to the liquid cooling system. At the same time, the "aerogel silicone rubber composite insulation material" launched by an enterprise has both thermal insulation and electrical insulation properties. It has passed the UL94 V-0 fire protection certification and has been applied to high-voltage energy storage cabinets above 400V.


Technical challenge: Long term stability to be broken through
Although organic silicon materials are widely used in the field of new energy, their long-term aging resistance still needs to be improved. A team from a certain university discovered that under ultraviolet irradiation, the siloxane main chain gradually breaks to form low molecular weight cyclic compounds, leading to material brittleness. By introducing fluorine element modification, the service life of the material can be extended from 15 years to 25 years, but the cost increases by 20%. At present, the industry is exploring nanodoping technology to balance performance and cost.