Solving The Bottleneck of Graphene Conductivity/Heat Conduction: One High-temperature Purification Furnace is Enough
Release time:
2025-10-27
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Abstract
1、 The root of the bottleneck: the perfectly locked lattice
The unparalleled electrical and thermal conductivity of graphene is attributed to its perfect sp ² hybridized carbon hexagonal ring lattice.
Electrons can shuttle through it almost unobstructed.
Phonons (carriers of heat) can transfer without scattering.
However, in reality, whether it is the oxidation-reduction method, CVD method, or other processes, a large number of "defects" and "impurities" will be introduced into graphene:
Oxygen containing functional groups: act as roadblocks, severely impeding the transmission of electrons and phonons.
Metal ion residue: becomes a charge scattering center, reducing carrier mobility.
Amorphous carbon and vacancy defects: disrupt the integrity of the lattice and interrupt the conduction path of phonons.
These 'flaws' are like setting up countless roadblocks and potholes on a highway, causing a sharp decline in performance.
2、 Solution: Use extreme high temperature to awaken intrinsic performance
How to clear these roadblocks and repair this highway? The answer is to utilize the maximum high-temperature energy.
A high-performance high-temperature purification furnace is the ultimate tool to achieve this goal. Its working principle is simple and direct:
Create extreme environment: Heat graphene material to above 2000 ℃ in high vacuum or high-purity inert atmosphere.
Forced impurity decomposition and volatilization: At such extreme temperatures, the vast majority of oxygen-containing functional groups and organic residues will be completely removed by pyrolysis and evacuated in the form of gas by the vacuum system.
Drive lattice repair: The extremely high energy endows carbon atoms with sufficient migration ability, enabling them to automatically fill defects, restructure the lattice, and make the graphene layer structure tend towards perfection.
This process is a deep sublimation of graphene materials from "physical cleaning" to "structural repair".
3、 A qualitative leap in performance before and after purification
After high-temperature purification treatment, you will see the following changes:
| Performance metrics | Before purification | After purification |
| Conductivity | 10³ ~ 10⁴ S/m | > 10⁵ ~ 10⁶ S/m |
| Thermal conductivity | Hundreds of W/m · K | > 2000 W/m·K |
| Microstructure | Multiple defects and disordered structure | Complete crystal lattice, ordered sp ² structure |
For conductive applications, this means that your graphene conductive paste has lower resistance, and the conductive film has lower resistance, which can easily meet the requirements of high-end lithium batteries and special coatings.
For thermal conductivity applications, this means that your graphene heat dissipation film's thermal conductivity is truly comparable to world-class products, and can demonstrate its capabilities in heat dissipation bottleneck areas such as 5G devices and high-end mobile phones.
4、 Why do we say 'one is enough'?
Because of a stable and reliable high-temperature purification furnace, we provide you with:
One stop solution: Without the need for complex front-end and back-end processes, deep purification and repair of materials can be completed independently.
Process universality: Whether it is graphene powder, film or slurry, corresponding purification process solutions can be found.
The decisive effect: It directly determines whether your product is a key step from "usable" to "excellent", and from "laboratory" to "industrialization".
We are well aware that investing in equipment means a commitment to effectiveness. Therefore, we not only provide equipment, but also offer mature process packages and full process technical support to ensure that you can truly make good use of this performance unlocker .
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2022-07-28
2025-11-24
Zhuzhou Chi Carbon Automation Equipment Co., Ltd
1
Email:13077017815@163.com
chitanauto@163.com
Adresse:
Building 4, Phase 2.5, Independent Entrepreneurship Park, Tianyi Science and Technology City, Tianyuan District, Zhuzhou City, Hunan Province, China
Mr. Gong +86 13975355803
