White Carbon Black: A "Performance Catalyst" for New Energy Batteries
Lithium ion battery applications:
Negative electrode additive: The porous structure of gas-phase white carbon black reduces the volume expansion rate of silicon-based negative electrodes from 300% to 120%, and the capacity retention rate reaches 92% after 100 cycles.
Electrolyte modification: Adding 3% white carbon black to LiPF ₆ electrolyte increases ion conductivity by 25%, and the low-temperature -20 ℃ discharge capacity retention rate increases from 65% to 85%.
Breakthrough in supercapacitors:
Electrode material: Mesoporous white carbon black (pore size 2-50nm) developed by French company Solvay, which enables double-layer capacitors to have a specific capacitance of 120F/g and a power density exceeding 10kW/kg.
Solid electrolyte: After the composite of white carbon black and polyethylene oxide, the room temperature ionic conductivity reaches 10 ⁻ S/cm, which is close to the level of liquid electrolyte.
Progress in Fuel Cells:
Catalyst carrier: After loading platinum nanoparticles onto white carbon black, the activation energy for hydrogen oxygen reaction decreased by 0.3 eV, and the fuel cell efficiency increased from 55% to 62%.