{"product_id":"ultra-small-graphene-sheets","title":"Ultra-small graphene sheets","description":"\u003cp\u003eProduct Name Ultra-small graphene sheets Product Overview This product is prepared by independent Rapid Joule Heating (RJH) technology with high-purity industrial carbon black as the precursor. Through instantaneous temperature rise via millisecond-level ultra-large current pulses, the amorphous carbon structure of carbon black is rapidly graphitized and carbon atoms are restructured at an ultra-high temperature of 2500–3000°C, forming high-quality few-layer turbostratic graphene in one step. The preparation process requires no high-temperature furnace sintering, no strong redox reagents, and no inert gas protection. It has the advantages of ultra-fast synthesis, green and pollution-free performance, low cost and scalable mass production. It perfectly avoids the pain points of traditional graphene such as high defects of redox graphene, high cost of CVD graphene and low output of mechanically exfoliated graphene, serving as a core new carbon-based filler for high-performance conductive, thermal conductive and electrochemical composite materials. Product Features 1. Ultra-low defect and high crystallinity: The product has a high proportion of sp² hybridized carbon, extremely low Raman defect peaks and complete crystal structure, with much better electron transmission and charge migration capabilities than traditional redox graphene; 2. Unique turbostratic structure: The layers are rotationally misaligned with weak interlayer interaction, which can be uniformly dispersed in water, ethanol, organic solvents and polymer systems without adding a large amount of surfactants; 3. Green and efficient preparation: Synthesized in millisecond-level throughout the whole process with low energy consumption, no toxic reagent residue and no waste gas or wastewater pollution, meeting the needs of environmentally friendly industrial production; 4. Excellent electrical and thermal conductivity: It has ultra-high electron conductivity and heat conduction efficiency, which can greatly improve the electrical conductivity and heat dissipation performance of composite materials with a very low addition amount; 5. Outstanding chemical and thermal stability: It is resistant to acid and alkali corrosion at room temperature and has good high-temperature oxidation resistance. The structure is stable at 550°C in nitrogen atmosphere, suitable for various complex working conditions; 6. In-situ modification and regulation: Heteroatom doping such as nitrogen and boron can be realized in-situ during the preparation process, which can accurately regulate the surface activity, hydrophilicity and electrochemical properties of the material to adapt to multi-scenario functional modification requirements. Application Fields 1. New energy energy storage: It can be used as conductive additives and anode modification materials for lithium-ion batteries and lithium-sulfur batteries, as well as electrode materials for supercapacitors, which can effectively reduce electrode internal resistance and improve rate performance and cycle service life; 2. Conductive composite materials: Applied in conductive rubber, conductive plastics, epoxy resin composites, conductive cement, etc. A very low addition amount can convert the material from insulation to conduction and improve the comprehensive mechanical and conductive properties of materials; 3. Thermal management materials: Used to prepare thermal conductive gels, thermal conductive gaskets and flexible heat dissipation films, widely used in heat dissipation scenarios of new energy batteries, LED lamps and precision electronic components; 4. Electromagnetic functional materials: It can be used to prepare high-frequency electromagnetic shielding coatings and flexible wave-absorbing films, suitable for 5G communication equipment, precision electronics, military electromagnetic protection and other scenarios; 5. Catalytic materials: Serves as a high-performance carrier for loading metals and metal oxides, applied in electrocatalytic hydrogen evolution, oxygen evolution, photocatalytic degradation, organic catalytic synthesis and other fields; 6. Intelligent sensing: Relying on high specific surface area and controllable surface defects, it can fabricate high-sensitivity gas sensors, pressure sensors and electrochemical sensors.\u003c\/p\u003e","brand":"xfnano","offers":[{"title":"1kg D:2-8 μm 110531 \/ Store at room temperature in a dry, dark and sealed place \/ 365days","offer_id":57280542572922,"sku":"110531","price":70.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0907\/3606\/6938\/files\/1_27871cef-ce01-415a-9a0e-d29d5e516d17.png?v=1780024497","url":"https:\/\/chinanano.com\/es\/products\/ultra-small-graphene-sheets","provider":"xfnano","version":"1.0","type":"link"}