White carbon black: a "green engine" from traditional industry to new energy sector
In the wave of global manufacturing transformation towards low carbonization and intelligence, white carbon black (silica nanoparticles) is standing out from the role of traditional rubber reinforcing agents due to its unique physical and chemical properties, becoming a core material in high-end fields such as new energy and semiconductors. The global market size of white carbon black has exceeded 6.188 billion US dollars by 2025, and is expected to climb to 8.133 billion US dollars with a compound annual growth rate (CAGR) of 4.0% by 2031. As the world's largest producer, China is leading this material revolution through technological innovation and industrial upgrading.


Green tires: the 'invisible endurance' of new energy vehicles
Traditional tires use carbon black as a reinforcing agent, but the high density and strong light absorption of carbon black result in high rolling resistance and low fuel efficiency. White carbon black, with its nanoscale porous structure (particle size 5-50nm) and surface silanol activity, forms a three-dimensional network in the rubber matrix, which can reduce rolling resistance by 20% -30% and improve wet slip resistance by more than 10%. The ultimate pursuit of range for new energy vehicles further amplifies the advantages of white carbon black: each electric vehicle consumes 5-8 kilograms of high-end white carbon black for tires and battery separators, directly driving an annual demand increase of over 100000 tons.


Taking China's leading enterprise Zhencheng as an example, it has reduced production costs by 15% -20% through the integrated industrial chain layout of "sodium silicate white carbon black", and its products have entered the supply chain of international tire giants such as Michelin and Bridgestone. In 2025, as the EU tire labeling law increases the requirement for rolling resistance from 3.5N/kN to 2.5N/kN, the proportion of highly dispersed white carbon black added to green tires will jump from 35% to 55%, becoming the core driving force for industry growth.


New energy batteries: from "structural support" to "functional carrier"
In the field of lithium-ion batteries, white carbon black is transitioning from traditional separator coating materials to multifunctional additives. Gas phase white carbon black forms a hydrogen bond network with polyvinylidene fluoride (PVDF) through surface hydroxyl groups, which can reduce the thermal shrinkage rate of the separator from 50% to below 5%, while improving electrolyte wettability and extending battery cycle life. More cutting-edge research has combined white carbon black with aluminum oxide to prepare ceramic coated separators with both thermal conductivity and insulation properties, increasing the pass rate of battery needle puncture experiments from 60% to 98%.


In the field of solid-state batteries, white carbon black based composite materials can significantly improve the hydrogen absorption/desorption rate of metal hydrides by regulating the pore structure (specific surface area>1000m ²/g). For example, loading MgH ₂ into the mesoporous silica can reduce the hydrogen release temperature from 300 ℃ to 200 ℃ and increase the hydrogen release capacity by 30%, providing key material support for the commercial application of hydrogen fuel cell vehicles.


Semiconductor Packaging: The 'Nano Guardian' of the 5G Era
With the popularization of 5G communication and artificial intelligence technology, the demand for high thermal conductivity and low dielectric loss packaging materials in electronic devices has surged. High purity electronic grade white carbon black (purity>99.9999%) is prepared by plasma vapor phase method and can be uniformly dispersed in silicone epoxy resin, reducing the curing time from 2 hours to 10 minutes and lowering the curing temperature to room temperature. This characteristic makes it a core material for chip packaging and high-frequency PCB substrates, with an annual demand growth rate of 25% and a unit price that can reach 3-5 times that of ordinary products.


Chinese companies are accelerating breakthroughs in this field. Lianke Technology has successfully entered the supply chains of international semiconductor giants such as Intel and TSMC by reducing the product consistency coefficient of variation (CV) to below 3% through its independently developed continuous precipitation process. By 2025, with the implementation of the US Chip and Science Act, the global market size of electronic grade white carbon black is expected to exceed $1.5 billion, and the market share of Chinese companies will increase from the current 15% to 30%.