When photovoltaic modules chase sunlight on the Gobi Desert, when new energy vehicles gallop on highways, and when wind turbine blades rotate along the coastline, a seemingly inconspicuous material - organosilicon - is becoming the "behind the scenes hero" of the new energy revolution. From the sealing of photovoltaic module frames to electrolyte additives for lithium batteries, from surface coatings on wind turbine blades to proton exchange membranes for hydrogen fuel cells, the deep integration of organic silicon and new energy is reshaping the global energy landscape.


1、 Photovoltaic field: counter attack from "supporting role" to "leading role"
In the photovoltaic industry chain, the application of organosilicon has gradually become a key material for core components from the initial edge auxiliary materials:
Encapsulation adhesive: The weather resistance of single component silicone sealant can reach 25 years, and 2 out of every 3 photovoltaic modules worldwide use Chinese silicone materials. The two-component modified silicone developed by a certain enterprise has increased its adhesive strength from 1.0MPa to 2.5MPa by introducing acrylic groups, meeting the packaging requirements of double-sided double glass components.
Backboard coating: Organic silicon modified acrylic resin coating, which has the characteristics of UV resistance, moisture resistance, salt spray resistance, etc., extending the service life of the backboard from 10 years to 25 years. The fluorosilicon coating developed by a certain enterprise can maintain a reflectivity of over 95% in extreme environments such as deserts and oceans, and improve the power generation efficiency of components by 3%.
Junction box sealing: A thermal conductive silicone sealing adhesive developed by a certain enterprise has increased its thermal conductivity from 0.2W/(m · K) to 1.5W/(m · K), which can lower the internal temperature of the junction box by 15 ℃ and reduce the risk of thermal runaway.
2、 New Energy Vehicles: Full Chain Penetration from "Thermal Management" to "Lightweight"
The rapid development of new energy vehicles has opened up a trillion dollar market space for organic silicon:


Battery thermal management: A phase change organic silicon material developed by a certain enterprise can absorb heat when the battery temperature increases and release heat when the temperature decreases, controlling the temperature difference of the battery pack within ± 2 ℃ and increasing the range by 5%. A certain type of thermal conductive silicone grease with a thermal conductivity of 8W/(m · K) is used for IGBT module heat dissipation, increasing power density by 30%.
Lightweight design: The density of low-density silicone sealant has been reduced from 1.2g/cm ³ to 0.8g/cm ³, helping to reduce the weight of battery packs by 15%; The silicon carbon composite material developed by a certain enterprise has a specific capacity of 500mAh/g. When applied to negative electrode materials, it can increase the energy density of batteries by 20%.
Electromagnetic compatibility: A conductive silicone sealant developed by a certain enterprise, which reduces the volume resistivity to 10 ΩΩ· cm by adding silver coated copper powder, is applied to high-voltage wire harness sealing to solve electromagnetic interference problems.
3、 Wind power and hydrogen energy: the "blue ocean market" in emerging fields
In the fields of wind power and hydrogen energy, the application of organosilicon is moving from the experimental stage to scale:


Wind turbine blades: a silicone surface coating developed by a certain enterprise, which reduces the surface roughness of the blades by 50%, reduces wind resistance by 10%, and improves power generation efficiency by 5% by introducing nano silica; A certain model of anti icing coating can prevent ice accumulation at -20 ℃ and reduce downtime by 80%.
Hydrogen fuel cell: A company has developed an organic silicon material for proton exchange membrane, which increases the proton conductivity to 0.1S/cm by introducing sulfonic acid groups, reaching the international advanced level; A certain type of sealant can maintain elasticity at -40 ℃ to 120 ℃ and is used for sealing fuel cells with a leakage rate of less than 10 ⁻⁹ Pa · m ³/s.
4、 Challenge and Opportunity: The Leap from "Following" to "Leading"
Although China's organic silicon has made breakthroughs in the field of new energy, it still faces three major challenges:


Technical barriers: The purity requirement for semiconductor grade organic silicon materials is 9N (99.99999999%), which only a few domestic enterprises can meet; The lifespan of organic silicon materials used in hydrogen fuel cells needs to be increased from 5000 hours to 20000 hours to meet commercial demand.
Cost pressure: The VOC emission standard for photovoltaic module encapsulation adhesive has been reduced from 200g/L to 50g/L, resulting in a 30% increase in raw material costs; The price of thermal conductive silicone grease for new energy vehicles is five times that of traditional materials, which limits its large-scale application.
Standard deficiency: The national standard for organic silicon coating for wind turbine blades has not yet been issued, and there is a phenomenon of inferior products being sold as good in the market; The testing method for hydrogen fuel cell sealant is not uniform, which affects product interchangeability.
From photovoltaics to new energy vehicles, from wind power to hydrogen energy, the deep integration of organic silicon and new energy is writing a "two-way rush" industrial revolution. In the future, with continuous technological breakthroughs and gradual cost reductions, this' green material 'will undoubtedly inject stronger impetus into the global energy transition.