Sulfurized Polyacrylonitrile (SPAN) for Li-S Battery Cathode, 50 g/bottle - Lib-SPAN

SPAN is created by heating Polyacrylonitrile (PAN) and elemental sulfur together at high temperatures (typically 300°C to 450°C), which enables sulfur that is chemically grafted onto a conductive polymer backbone and no soluble polysulfides are formed. It is compatible with standard Carbonate electrolytes (like those in regular Li-ion) without any expensive additives. SPAN typically offers a reversible capacity of 550–800 mAh/g (based on the total mass of the composite). While lower than the theoretical limit of pure sulfur (1675 mAh/g), it is significantly higher than standard NMC cathodes (~200 mAh/g).

Properties	Typical Value
Appearance	Black
Size Distribution	D10: 2.213 um D50: 4.629  um D90: 14.76
Solubility	Insoluble in water, slightly dissolved in organic solvents (eg: NMP, DMF)
Main Impurities	Na: <500 ppm K: <150 ppm Ca: < 20 ppm
Density	~1.63 /cm3
Specific Capacity (mAh/g)	~700 mAh/g (discharge plateau: 1.7-1.8 V)
Columbic Efficiency (first cycle)	99.0%
Cycling Stability	>100 cycles
Note	MTI does not manufacture this product, and only sell the small quantity to research for development for new generation battery. If you need a larger quantity or have a question for IP, we will forward your inquiry to the producer.

Application Notes:

1. Please click to see Procedure for Preparing Anode & Cathode Electrode Slurry.
2. Please keep the powder in the vacuum box to avoid moisture.
3. Please bake the powder in a vacuum oven at 120 - 150 °C before making slurry and coating to ensure max. capacity.
4. The product is for research only, not supply for large quantity,