Soft Carbon Powder for Na-Ion Battery Anode, 100-500 g/bottle, CSIBASC

Soft carbon is a specific type of amorphous carbon used as an anode material, particularly in sodium-ion batteries (SIBs). Unlike hard carbon, which is "non-graphitizable," soft carbon is "graphitizable." This means that while it has a disordered structure, it will convert into ordered, crystalline graphite if heated to very high temperatures (e.g., above 2500°C). It is typically produced from precursors like petroleum coke or coal tar.

Soft carbon normally has a unique "turbostratic" (disordered, layered) structure, like a messy and incomplete stack of paper. The layers are not perfectly aligned, creating more space than in graphite. When the battery is charged, sodium ions force their way between these disordered layers. This process expands the spacing between the carbon layers (e.g., from ~3.6 Å to ~4.2 Å). The "electrochemically expandable" structure enables the expansion is highly reversible. When the battery is discharged, the sodium ions exit, and the layers contract, allowing for a stable and long cycle life.

Part Number	CSIBASC (C-SIB-A-SC)
Particle Size Distribution	D10 = 4.0 um,  D50 = 8.5 um,  D90 = 16.0 um
Tap Density	0.8 g/cm3
Specific Area	3.0 m2/g
First Discharging Capacity	~300 mAh/g Electrolyte: 1.0M NaPF6 in EC:DEC: EMC=1:1:1 vol% with 1%FEC
First Columbic Efficiency	~84%
Cycling Stability	95% capacity retention after 500 cycles
Package Grade	100 g, 200 g, and 500 g/bottle

Notes: (1) Please store the soft carbon powder in a dry area (glovebox is preferred); (2) The battery powder is highly recommended to be dried at 80-100°C in a vacuum oven for 6-12 h before use. 

References: 

1. Z. Jian, et al. Insights on the Mechanism of Na-Ion Storage in Soft Carbon Anode, Chem. Mater., 2017, 29, 2314–2320.
2. W. Wu, et al. A soft carbon materials with engineered composition and microstructure for sodium battery anodes, Nano Energy, 2024, 128, 109880.