Sulfur-Carbon (S/C, 75%) Composite Powder for Li-S Battery Cathode, 10 g/bottle, CLSBCSC
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S/C composite powder is a promising cathode material for Li-S battery research. The porous carbon matrix is essential for two critical reasons: (1) Electronic Conduction: The carbon provides the necessary pathway for electrons to reach the insulating sulfur particles and enable the electrochemical reactions. (2) Polysulfide Suppression: During cycling, sulfur dissolves into the electrolyte as large lithium polysulfide molecules (Li2Sx, where x=4-8). The porous structure of the carbon matrix physically traps these polysulfides, preventing them from dissolving and migrating to the anode—a process known as the shuttle effect, which causes rapid capacity fade.
| Part Number |
CLSBCSC (C-LSB-C-SC) |
| Chemical Composition |
Sulfur content is 75 wt% |
| Particle Size Distribution |
D10 = 5.1 um; D50 = 15.0 um; D90 = 32.9 um |
| Tap Density | 0.39 g/cm3 |
| First Discharging Capacity |
~857 mAh/g (0.1 C, 1.8-2.8 V)  Conditions: (1) S/C: Carbon Black: PVDF = 91% : 3%: 6%. (2) Carbon-coated aluminum foil as current collector; (3) nickel foam as back spacer support
|
| First Columbic Efficiency |
95.8% |
Notes: (1) Please store the S/C 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.