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battery energy storage chemicals
1,3-Propane Sultone (1,3-PS) SEI Additive
CAS: 1120-71-4
1,3-Propane sultone (1,3-PS) is a ring-opening electrolyte additive that undergoes reductive decomposition on anodes to deposit a robust sulfonate-rich SEI, increasing cycle life and improving thermal stability of lithium-ion cells. Used at 1–3 wt%, it is compatible with major carbonate solvents and LiPF6 electrolytes.
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Acetylene Black Battery Grade (Shawinigan-Type)
CAS: 1333-86-4
Battery-grade acetylene black (AB) has a highly crystalline graphitic microstructure and high purity (>99.5% carbon) with very low ash and sulfur content, making it ideal for demanding battery electrode applications. Its good electrical conductivity and moderate surface area balance performance with slurry processability.
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Adiponitrile (ADN) High-Voltage Electrolyte Additive
CAS: 111-69-3
Adiponitrile (ADN) is a dinitrile electrolyte additive that stabilizes high-voltage cathodes (>4.5V) by coordinating with transition metal sites on NMC surfaces, forming a robust CEI that suppresses electrolyte oxidation. It is effective in next-generation 5V-class spinel and lithium-rich layered oxide systems.
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Alumina (Al2O3) Ceramic Separator Coating Powder
CAS: 1344-28-1
Battery-grade submicron alumina (Al2O3) powder is the most widely used ceramic coating material for lithium-ion battery separators, providing thermal shutdown resistance up to 200°C+, improved wettability with carbonate electrolytes, and enhanced mechanical puncture resistance. Alpha-alumina or boehmite-derived gamma-alumina grades are available.
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Boehmite (AlOOH) Separator Coating Powder
CAS: 1318-23-6
Boehmite (AlOOH) is a preferred ceramic material for aqueous-slurry separator coating processes, offering lower density than alpha-alumina, better dispersibility in water-based systems, and excellent adhesion on both PE and PP separator substrates. Upon heating it converts to gamma-alumina, providing thermal robustness required for battery safety.
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Carboxymethyl Cellulose (CMC) Anode Binder/Thickener
CAS: 9004-32-4
Battery-grade CMC sodium salt is used in combination with SBR as a thickener and binder for graphite and silicon-graphite anode aqueous slurries. It controls slurry rheology for uniform coating, and its carboxylate groups bond covalently to silicon particles during drying, helping to buffer volumetric expansion.
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Cobalt Sulfate Heptahydrate Battery Grade (CoSO4·7H2O)
CAS: 10124-43-3
Battery-grade cobalt sulfate heptahydrate (CoSO4·7H2O) is the primary cobalt source for NMC and NCA cathode precursor co-precipitation and for LiCoO2 (LCO) synthesis. Strict control of Ni, Fe, Zn, and Na trace impurities is required to prevent electrochemical performance degradation in the final cathode active material.
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Conductive Carbon Black Super C45 Battery Grade
CAS: 1333-86-4
Super C45 carbon black is a medium-surface-area (BET ~45 m²/g) conductive additive offering a balance of conductivity and electrolyte absorption in cathode slurries. Its lower oil absorption versus C65 reduces slurry viscosity, making it preferred for high-solid-loading electrode formulations and high-speed coating lines.
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Conductive Carbon Black Super C65 Battery Grade
CAS: 1333-86-4
Super C65 carbon black is a high-surface-area (BET ~62 m²/g), high-structure conductive additive widely used in NMC, NCA, LCO, and LFP cathode electrodes. Its branched particle network creates efficient electron conduction pathways at low loadings (1–3 wt%), improving rate capability and reducing ohmic resistance in lithium-ion battery electrodes.
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Diethyl Carbonate Battery Grade (DEC)
CAS: 105-58-8
Battery-grade diethyl carbonate (DEC) is a low-viscosity co-solvent used in EC/DEC electrolyte systems for standard cylindrical and prismatic lithium-ion cells. Its moderate boiling point (127°C) and low viscosity provide a balance of safety and ionic conductivity in commercial electrolyte blends.
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Dimethyl Carbonate Battery Grade (DMC)
CAS: 616-38-6
Battery-grade dimethyl carbonate (DMC) is a low-viscosity, low-boiling co-solvent that reduces electrolyte viscosity and improves ionic mobility in lithium-ion cells. Used widely in EC/DMC binary and EC/DMC/EMC ternary electrolyte systems, it provides excellent compatibility with LiPF6 at battery-grade purity.
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Ethyl Methyl Carbonate Battery Grade (EMC)
CAS: 623-53-0
Battery-grade ethyl methyl carbonate (EMC) combines the low viscosity of DMC and the moderate boiling point of DEC, making it the preferred co-solvent in EC/EMC and EC/DMC/EMC electrolyte systems for automotive and consumer Li-ion batteries. Its balanced properties support both high-rate and wide-temperature performance.
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