With the continuous improvement of global new energy vehicle endurance requirements and the iterative upgrading of consumer electronic battery technology, the industry's demand for lithium battery energy density has increased year by year. Traditional artificial graphite and natural graphite anode materials have approached the upper limit of energy density, making it difficult to meet the development needs of ultra-long-endurance new energy vehicles and high-performance electronic devices. Silicon-carbon composite anode materials, with a theoretical specific capacity more than 10 times that of traditional graphite anodes, have become the core innovative direction of the global battery anode material industry and are being rapidly promoted and applied in high-end power batteries and energy storage batteries.
However, the large-scale popularization of silicon-carbon anode materials has long been restricted by core technical defects. Silicon materials will produce up to 300% volume expansion during lithium-ion embedding and de-embedding processes. Long-term expansion and contraction will cause the fragmentation of silicon particles, peeling of electrode materials, and attenuation of battery capacity, resulting in short cycle life and poor stability of silicon-carbon batteries, which seriously restricts their industrial application. How to effectively buffer the volume expansion of silicon materials and improve the cycle stability of silicon-carbon anodes has become the core technical problem that the global battery material industry urgently needs to solve.
High-performance porous graphite skeleton materials are the most effective and mature technical solution to solve the volume expansion problem of silicon-carbon anodes at present. Different from traditional dense graphite materials, porous graphite has a rich and uniform three-dimensional pore structure inside. The elastic pore structure can provide sufficient buffer space for the volume expansion of silicon particles during battery charging and discharging, avoid particle fragmentation and electrode peeling, and greatly improve the cycle service life and capacity retention rate of silicon-carbon batteries. At the same time, the three-dimensional network structure of porous graphite can improve the conductivity and lithium-ion transmission efficiency of the electrode, further optimize the charging speed and rate performance of the battery.
In 2026, major global battery manufacturers have accelerated the large-scale application of high-performance porous graphite skeleton composite silicon-carbon anode technology. Tesla, CATL, Panasonic and other leading enterprises have successively launched new high-energy-density batteries based on porous graphite skeleton materials, which have achieved significant improvements in battery endurance, charging speed and cycle life. Driven by the downstream battery industry upgrading, the global market demand for high-performance porous graphite skeleton materials has shown explosive growth, and the industry has entered a high-speed growth period with a compound annual growth rate of 12.8%.
Although the market prospect is broad, the production and R&D of high-performance porous graphite skeleton materials have high technical barriers. The core technical difficulties lie in the precise control of pore size distribution, uniform pore structure forming, structural stability optimization and conductivity balance. Ordinary porous graphite materials have problems such as uneven pore size, easy structural collapse and low conductivity, which cannot adapt to the long-term cyclic working environment of batteries. Only a few leading material enterprises in the world have mastered mature mass production technology, resulting in tight global market supply and high product prices.
Focusing on the innovative needs of the global silicon-carbon anode industry, Jincheng Graphite has independently developed a new generation of high-performance porous graphite skeleton materials for batteries after years of technical research and development. The enterprise breaks through the traditional physical pore-forming process and adopts a composite chemical pore-forming and high-temperature sintering integrated process, which can precisely control the pore size distribution and pore structure density of graphite materials. The produced porous graphite has uniform three-dimensional pore structure, stable skeleton structure and excellent electrical conductivity, which can perfectly buffer the volume expansion of silicon materials and maintain the long-term structural stability of electrode materials.
Test data shows that the silicon-carbon battery prepared with Jincheng Graphite's porous graphite skeleton material has a cycle life increased by more than 40% compared with the traditional silicon-carbon battery, and the capacity retention rate after 1000 cycles is increased to more than 85%. At the same time, the battery's fast charging performance and low-temperature discharge performance are significantly optimized, fully meeting the high-standard application requirements of high-end power batteries and large-scale energy storage batteries. Compared with similar international products, Jincheng Graphite's porous graphite skeleton materials have more stable performance and lower comprehensive production cost, with obvious competitive advantages.
At present, Jincheng Graphite has built a dedicated large-scale production line for battery-grade porous graphite skeleton materials, realizing stable mass production of series products. The enterprise has reached long-term strategic cooperation with many international battery material manufacturers and new energy power battery enterprises, providing stable supporting materials for global silicon-carbon anode industrial upgrading. With the continuous popularization of high-energy-density batteries, Jincheng Graphite will continue to optimize the pore structure and performance parameters of porous graphite materials, develop ultra-high-stability and high-conductivity new products, and lead the technological innovation and industrial upgrading of the global silicon-carbon anode supporting material industry.
