Graphene

• Industry application and technical index advantages

1. Electronics and semiconductor devices

high frequency transistor:

Advantages: carrier mobility is 140 times that of silicon, and the operating frequency exceeds 300 GHZ (IBM 2023 prototype).

Technical indicators: Cut-off frequency (Fₜ) up to 700 GHZ, power density 1.5 W/MM (1.2 times that of GAN).

Flexible electronics:

Application: Foldable screen mobile phone (HuaweiMATE XS uses graphene heat dissipation film).

Advantages: Flexibility> 1 million times (resistance change <2%), transmittance> 97%.

2. Energy storage and conversion

Lithium-ion battery:

Graphene conductive agent: adding 1% graphene, the internal resistance of the battery is reduced by 20%, and the cycle life is increased by 30% (Ningde Times technology).

Silicon-based anode: capacity up to 2,000 MAH/G (traditional graphite anode 372 MAH/G).

Supercapacitors:

Technical indicators: energy density 30 WH/KG, power density 100 KW/KG (MAXWELL TECHNOLOGIES data).

3. Composite materials

aerospace:

Graphene reinforced aluminum matrix composites: 50% strength increase, 20% weight reduction (part of Boeing 787).

Thermal management materials: thermal conductivity increased to 400 W/ (M K) (traditional polymers <1 W/ (M K)).

Lightweight car: graphene/epoxy composite material improves impact resistance by 80% (Tesla battery case).

4. Biomedicine and sensors

biosensor:

Detection limit: 0.1 PG/ML (Novel Coronavirus antigen detection, 1000 times more sensitive than ELISA).

Response time: <5 seconds (glucose sensor).

Antibacterial dressings: The killing rate of Staphylococcus aureus by graphene oxide dressings was>99.9% (3 hours of contact).

5. Environmental engineering

Seawater desalination membrane:

Performance: water flux 200 L/ (M² H BAR), salt retention rate 99.9% (MIT 2022 annual experimental data).

Pollution adsorption: Graphene aerogel adsorbs crude oil at a weight ratio of 86 times (ExxonMobil’s offshore oil spill emergency plan).