Graphene thermal conductivity - introduction and latest news - Page 8

The International Graphene Awards (IGA) was initiated by the Chinese Graphene Industry Association (CGIA) in collaboration with 50 graphene experts from all over the world.

In 2020 the IGA committee offered 5 different awards: for best graphene products, best graphene firm, industry promotion, industry demonstration and honorary award for the most contribution people in graphene industry.

Researchers led by Professor Tony McNally, from WMG, at the University of Warwick, in partnership with Senergy Innovations, have launched the first nanomaterial enabled all polymer solar thermal cell. This achievement was supported by funding from BEIS (Department for Business, Energy & Industrial Strategy).

The thermal properties of the polymers that were used were modified to enable heat from sunlight to be transferred with high efficiency to heat water in a low cost and sustainable way. The modular design of the cells reportedly allows for the rapid construction of a solar thermal cell array on both domestic and industry roofing.

Xiaomi recently launched a crowdfunding campaign for its new graphene-based smart heating mattress. The graphene layer in the mattress is used to generate heat, and according to the company the graphene enables uniform heating without the overheating or overcooling problems that are inherent in traditional heating mattress.

Xiaomi offers two kinds of graphene blankets - a single mattress at 299 Yuan (about $43) and a double one at 499 Yuan (about $73). The crowdfunding campaign has already attracted over 3,500 supporters and raised over 1.5 million Yuan.

Haydale has announced that, following the announcement on March 2020 regarding its graphene nano-platelets having been incorporated into iCraft’s cosmetic face mask sheet, a contract is now in place for 1 metric tonne of graphene nano-platelets (GNP-02-STD) in the first year, 2 metric tonnes in the second year, and three metric tonnes in the third year. This is an exclusive agreement for the mask application within the APAC region, excluding Thailand.

Haydale has signed a worldwide exclusivity contract to supply functionalized graphene nano-platelets for use in these sheet masks that are face-shaped sheet fabrics which utilize the thermal and electrical conductivity of graphene to help the skin absorb its contents through bioelectric currents. In addition, Haydale said it has completed a GBP3.0 million equity raise.

Xiaomi's upcoming smartphone, the high-end Mi 10 Ultra, will reportedly be sporting "the first mass-produced 120W graphene battery".

Xiaomi claims the 4,500mAh graphene-based lithium-ion battery packs 1,000 times greater conductivity than traditional carbon black batteries. The brand was also quoted as saying that the battery remained at over 90% capacity after 800 charge and discharge cycles.

Huawei continues the use of graphene heat dissipation technology, which started with the use of graphene film in Huawei Mate 20X and continues with later versions, with its Huawei MatePad Pro 5G launched earlier in 2020. The MatePad is a 5G tablet, equipped with ultra-thick 3D graphene heat dissipation technology.

For this technology, graphene is used as raw material, in the form of oriented thermal conductive films embedded in several layers of graphene with good mechanical properties, high thermal conductivity, lightweight, thin material, and high flexibility.

U.S-based motorcycle maker Indian Motorcycle has launched a new graphene-based technology Called ClimaCommand Classic Seat, which aims to deliver both heating and cooling to riders and passengers. The thermo-electric technology reportedly raises the bar on cooling, providing a much more effective solution than HVAC convection systems.

A critical performance benefit of the ClimaCommand technology is that it actually produces a surface that’s cold to the touch, rather than merely pushing cool air through perforations in the surface in the manner that HVAC system offerings operate.

It has been reported that Honor will introduce the Honor X10 at the end of this month, and that it will feature a graphene-based cooling system.

The phone is expected to be the cheapest 5G model to come from Huawei, so it may get a little warmer than regular smartphones. Thanks to the graphene-based cooling system, the phone will have better heat protection.

A team of researchers from the University of Oxford, Delft University and IBM Zurich has demonstrated that graphene can be used to build sensitive and self-powering temperature sensors. The findings could pave the way for the design of highly sensitive thermocouples, which could be integrated in nanodevices and even living cells.

On-chip temperature sensors that are scalable, reliable and installable into nanodevices are essential for future thermal management in CPUs. By determining the local heating in certain segments of a CPU through the distribution of temperature monitors along critical points, feedback can be provided to a control system. In response, thermal management could allow for the redistribution of the thermal load through spot cooling or load distribution, for instance among different computing cores, avoiding hot spots and enabling a longer device lifetime as well as saving energy. Such temperature sensors should have a small footprint, high accuracy, consume a minimum amount of power and be compatible with established nanofabrication techniques.

Huawei has launched its Huawei P40 flagship phone family, that includes three different devices: the Huawei P40, Huawei P40 Pro and, a new addition to the line-up for 2020, the Huawei P40 Pro Plus.

After many rumors about this line sporting a graphene battery - which were later disproved - it appears that Huawei's new P40 phones are using a graphene film cooling technology for heat management purposes (Huawei's SuperCool system), much like the Mate 20X and P30 line that preceded the P40.