SSPN Composite Cathode Powder for Lithium-Sulfur Batteries

Name: SSPN Composite Cathode Powder for Li-S Batteries (High-Sulfur SPAN)
Product Type: Lithium-Sulfur Composite Cathode Active Material (SSPN)
Product Code: XN-SSPN
SKU: SSPN-LSB
Brand: Xnergy

Product Introduction:

SSPN Composite Cathode Powder is a high-sulfur, battery-grade active material for lithium-sulfur (Li-S) batteries that combines S90D polymer sulfur with SPAN (sulfurized polyacrylonitrile) in a hybrid composite architecture. Where standard SPAN holds about 50 wt% sulfur, SSPN reaches over 79 wt% sulfur content while still suppressing the polysulfide shuttle — balancing high specific capacity with stable cycling. With fine, uniform particles (D50 ≈ 7.14 μm), ultra-low metal impurities, and excellent batch-to-batch consistency, SSPN is engineered for next-generation cells targeting 500+ Wh/kg energy density.

Key Features:

Hybrid S90D + SPAN composite architecture for high capacity with polysulfide suppression
High sulfur content >79 wt% — well above standard SPAN (~50 wt%)
Fine, uniform particle size (D50 ≈ 7.14 μm) for reproducible electrode coating
Ultra-low metal impurities (total metals 94.49 ppm; Cu, Ni, Zn, Pb below detection limit)
Excellent batch-to-batch consistency for reliable comparative testing
Engineered for high-energy cells targeting 500+ Wh/kg

Key Specifications:

Application Areas:

Lithium-sulfur (Li-S) battery cathode development and research
Coin, pouch, and prismatic cell prototyping
High-energy-density batteries for UAV/drone, eVTOL, and HAPS platforms
Defense and aerospace battery R&D targeting 500+ Wh/kg
University, research-institute, and industrial next-generation battery programs

Packaging & Storage:

Supplied in aluminum-laminated, vacuum-sealed bags or HDPE bottles under dry inert atmosphere
Store sealed in cool, dry conditions away from moisture, heat, and direct sunlight
Reseal promptly after use to preserve material quality

Specifications are provided for reference and may be adjusted to suit specific research requirements. Configuration and options are specified at order time.

Note: SSPN Composite Cathode Powder is the high-sulfur (>79 wt%) upgrade to standard SPAN, engineered for next-generation Li-S cells targeting 500+ Wh/kg. For the standard ~50 wt% material, see our SPAN Cathode Powder for Li-S Batteries. Prefer ready-coated electrodes? See the SPAN Cathode Electrode Sheet. Need a fully assembled cell? The SPAN Dry Pouch Cell pairs a SPAN cathode with a lithium-metal anode. Explore more Cathode Materials for battery research.Name: SSPN Composite Cathode (S90D Polymer Sulfur + SPAN)

Material Form: Black powder

Product Code: XN-SSPN

Description:

SSPN is a composite cathode active material formulated from two complementary components: S90D polymer sulfur, which delivers high theoretical capacity through stable polymer-sulfur chains, and SPAN (sulfurized polyacrylonitrile), which provides a covalently bonded carbon-nitrogen framework that anchors sulfur and suppresses polysulfide dissolution. The hybrid architecture achieves >79 wt% sulfur content — significantly higher than conventional SPAN — while retaining the structural integrity needed for stable cycling in lithium-sulfur batteries.

Application:

Cathode active material for high-energy-density lithium-sulfur (Li-S) batteries. Suitable for UAV, drone, and eVTOL battery applications targeting 500+ Wh/kg specific energy, as well as HAPS, defense, aerospace, and Li-S battery R&D in coin, pouch, and prismatic cell formats.

Specifications:

Metal Impurities:

Values measured by Xnergy. Typical values for reference; not guaranteed unless otherwise specified.

Characteristics:

Higher sulfur loading than standard SPAN

Standard SPAN cathodes contain ~50 wt% sulfur. SSPN composite achieves >79 wt% — a step-change improvement that translates into higher gravimetric capacity at the cathode level.

Hybrid composite architecture

The S90D + SPAN structure preserves the polysulfide-shuttle suppression of covalent SPAN chemistry while unlocking the higher capacity ceiling of polymer sulfur, suitable for aviation-grade Li-S pouch cells targeting 500+ Wh/kg.

Fine, uniform particle distribution

D10 = 3.43 μm, D50 = 7.14 μm, D[4,3] = 8.43 μm. Powder coats uniformly into thin, dense electrodes with consistent batch-to-batch electrochemistry.

Ultra-low metal impurities

Total metals 94.49 ppm against a 500 ppm spec. Cu, Ni, Zn, Pb all below detection limits, preventing parasitic reactions in finished cells.

Packaging & Storage:

Aluminum-laminated, moisture-proof vacuum-sealed bags or HDPE bottles. Sealing performed under dry inert atmosphere when required. Store in a cool, dry, sealed environment away from moisture. Reseal promptly after opening.

Safety:

For research and industrial use only. Avoid inhalation of dust. Wear PPE (masks, gloves, safety goggles). Handle in a dry environment. Refer to SDS for complete safety information.

Note: Values listed above are typical and for reference only. Performance may vary depending on cell architecture, electrolyte selection, and test protocol.