Products Description
Overview
Graphene is a two-dimensional material formed by sp² hybridization of a single layer of carbon atoms. It exhibits outstanding electrical and thermal conductivity, excellent mechanical strength, and chemical stability. Graphene powder consists of graphene sheets dispersed into a fine powder, making it easier to integrate uniformly into various materials. In the battery industry, graphene powder is widely applied in next-generation technologies including lithium-ion batteries, supercapacitors, lithium-sulfur batteries, and lithium-air batteries, significantly enhancing overall battery performance.
Applications in Lithium-Ion Batteries
- Electrode Material Enhancer
- Improve conductivity: Enhances electrical conductivity in both cathode (e.g. LiFePO₄, LCO) and anode (e.g. graphite, silicon-based) materials.
- Structural stabilization: Alleviates electrode volume expansion, especially in silicon anodes, thus extending cycle life.
- Increase specific surface area: Provides more active sites, boosting specific capacity.
- Conductive Additive
- Serves as a superior alternative or complement to traditional carbon black.
- Reduces additive content while improving conductivity and energy density.
- Battery Separator Coating
- Coating graphene on separators enhances lithium-ion transport, mechanical strength, and thermal stability.
Applications in Supercapacitors
- High specific surface area: Up to 2630 m²/g, offering abundant charge storage sites and high capacitance.
- High conductivity: Reduces internal resistance and boosts power density.
Applications in Lithium-Sulfur Batteries
- Conductive framework: Forms a conductive scaffold for sulfur cathodes, enhancing conductivity and suppressing polysulfide dissolution.
- High sulfur loading: Large surface area allows higher sulfur utilization.
- Flexible structure: Absorbs volume changes during cycling, improving battery stability.
Applications in Lithium-Air Batteries
- Cathode material: Provides catalytic active sites for ORR and OER due to its large surface area.
- Conductive network: Enhances electron transfer and minimizes polarization.
- Inhibits side reactions: Chemically stable, helping reduce electrolyte decomposition and electrode passivation.
Applications in Other Battery Types
- Sodium-ion batteries: Used as anode material or conductive additive to improve performance.
- Flexible batteries: Ideal for wearable devices due to its flexibility and lightweight properties.
Advantages of Graphene Powder in Batteries
- High conductivity: Enhances electron mobility and reduces internal resistance.
- Large specific surface area: Increases reaction sites and battery capacity.
- Mechanical durability: Maintains electrode integrity and extends cycle life.
- Chemical stability: Performs reliably under harsh electrochemical conditions.
- Lightweight: Contributes to battery weight reduction without sacrificing performance.
Technical Parameters
| Standard value | |||||||||
| Standard value | thermal conductivity（w/m.k） | ||||||||
| tap density（g/ml） | particle-size analysis | purity（%） | water（%） | ash content（%） | |||||
| Model | D10/(um) | D50/（um） | D90/(um) | Sheet thickness （nm） | 5300 | ||||
| SE1432 | 0.05~0.08 | ≤15 | ≤30 | ≤60 | ≥99 | ≤0.5 | ≤0.5 | ≤5 | |
