Borax is an essential boron-containing mineral and multifunctional flux, renowned for its unique network-forming特性, stable chemical nature, and cross-linking capability. It plays vital roles in new ceramic sintering, metal composite joining, new energy batteries, and nuclear radiation protection, acclaimed as "the architect of high-temperature materials and the linker of multiphase interfaces."

❋ Aliases: Sodium Tetraborate, Tincal
❋ English Name: Borax
❋ Chemical Formula: Na₂B₄O₇·10H₂O
❋ Molecular Weight: 381.37
❋ CAS Number: 1303-96-4

Key Properties: High thermal stability, alkaline in aqueous solution, cross-linking capability, network formation

Frontier Application Scenarios

1. "Interface Stabilizer" in New Energy and Energy Storage

   • Sodium-ion battery electrolyte additive: Enhances initial Coulombic efficiency and cycle stability by regulating electrode interface chemistry;

   • Flow battery pH buffer: Maintains electrolyte acid-base stability in vanadium batteries, delaying precipitation.

2. "Low-Temperature Bonding Medium" for Advanced Material Joining

   • Ceramic-metal packaging materials: Serves as core component of low-temperature glass solder, achieving hermetic sealing of heterogeneous materials;

   • High-temperature alloy brazing flux: Promotes molten filler flow and oxide film removal in aerospace component welding.

3. "Neutron Control Material" in Nuclear Technology

   • Nuclear reactor shielding material: Utilizes boron's high neutron absorption cross-section to prepare composite protective materials;

   • Spent fuel reprocessing: Acts as solidification matrix component to immobilize radionuclides.

4. "Heavy Metal Capturing Agent" in Environmental Remediation

   • Industrial wastewater treatment: Deeply removes heavy metal ions through coordination of hydroxyl and boron-oxygen bonds;

   • Soil remediation: Forms stable complexes with organic matter, reducing heavy metal bioavailability.

Technological Breakthroughs and Sustainable Development

• Crystal phase control technology: Prepares anhydrous/pentahydrate borax by controlling hydration degree to meet different thermal behavior requirements;

• Micro-nano modification: Develops submicron borax powder to enhance dispersion and reactivity in composite materials;

• Green extraction process: Uses salt lake brine instead of ore raw materials, reducing energy consumption through extraction-crystallization combined technology;

• Life cycle assessment: Establishes full-chain environmental impact database from mining to application, promoting industry green development.