Exploring the Use of Silica Sol in New Energy Applications—Power Batteries
Release date:
2026-02-23
Traditional PVDF binders have high rigidity and poor hydrophilicity, making it difficult for them to accommodate the 300% volume expansion of silicon anodes, which leads to electrode pulverization and repeated rupture of the SEI film. Silica sol, through its nano-sized silica particles, forms bonds with the hydroxyl groups (-Si-OH) on the silicon surface. Si-O-Si covalent bond network Achieving “molecular-level anchoring” to significantly enhance the structural integrity of electrodes.
Using silica sol (particle size 20–40 nm, Na⁺ ≤50 ppm) as a binder enhances bonding strength and exhibits superior capacity retention after cycling compared to PVDF. By forming an organic-inorganic hybrid binder with PAA (polyacrylic acid), this composite combines the strong hydrogen-bonding interactions of PAA with the thermal stability of silica sol.
Related News
Address:
No. 16, New Materials Industrial Park, High-Tech Zone, Xiantao City, Hubei Province
Service hotline:
Email:
Scan the code to follow us on WeChat
Scan the code to access the mobile version
Powered by www.300.cn This website supports IPv4 / IPv6 access.