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Views: 22     Author: Site Editor     Publish Time: 2021-09-30      Origin: Site

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Graphene, the first two-dimensional material in the world, is only one carbon atom thick.

The strenth is 300 times that of steel, and it has flexibility. At room temperature, the nearly perfect thermally conductive material has a thermal conductivity of up to 3000-5000 W/m•K. The composition of graphene is the same as the graphite in the pencil. In 2004, the physicists Andre Heim and Constantine Novoselov of the University of Manchester in the United Kingdom separated graphene from graphite in the experiment. For the pioneering experiment of two-dimensional graphene materials, they jointly won the Nobel Prize in Physics in 2010.

The nearly perfect semiconductor material of graphene helps Huawei to make excellent mobile phones. From Mate 7 to Mate 30 Pro, Huawei Mate series all use graphene cooling scheme. Huawei's research on graphene began in 2012, and the preliminary research application scenarios include batteries, displays, sensors, and heat transfer. Huawei joined hands with first-class universities to carry out basic research and obtained a total of 15 patents, and jointly developed graphene cooling solutions with top universities. Heat dissipation is critical to the operation of smartphones and the performance of cloud-dependent service programs. Video processing and games will increase the heat of the device. If the temperature is too high, the CPU will slow down and reduce the performance of the smartphone. The graphene cooling solution can effectively face heat challenge.

A single layer of graphene has only one atomic thickness, which is too thin to be used alone. Graphene becomes ordinary graphite if stacked in parallel. When compounded with other materials, the heat conduction capacity is greatly lost. Huawei and collaborators creatively realized the multi-layer mobile rotating overlap of graphene. Developed a practical thickness of graphene heat dissipation film, the thermal conductivity of its products is 2 times that of graphite, 4 times that of pure copper. After innovative design, the graphene thermal conductive material is protected by PET insulating film, and then applied to Huawei's high-end flagship Mate 30 Pro. When you hang around in the game, the CPU can run at full capacity, and graphene always keeps the core temperature in a moderate range.

Graphene thermal conductive material, part of Huawei's technological innovation, Huawei's research and development laboratory will continue to explore in various fields. 



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