![]() ![]() We may need something that’s ultra-large-scale industrial in 10 to 20 years.” Musk replied, “They are part of the solution, but require lots of fresh water & land. This triggered a deluge of sarcasm across the platform: “You mean, like, trees?” “I planted a tree, do I win?” “Lol just plant some trees dumbass.” Gore's Thermal Insulation material for smartphones, this material has a thermal conductivity lower than air, helping reduce hot spots on the device surface, but is also compatible with the new mmWave 5G antenna that can struggle with signal propagation (see the IDTechEx article: Smartphone Thermal Management Materials: What's New? What's Next?).In late January, the multibillionaire Elon Musk took to Twitter and abruptly announced, “Am donating $100M towards a prize for best carbon capture technology”. Another significant material release in 2020 was the announcement of W.L. Henkel also announced their portfolio of TIMs for 5G infrastructure, including the BERGQUIST LIQUI-FORM TLF 6000HG gel-type TIM with 6.0 W/mK thermal conductivity and their BERGQUIST GAP PAD TGP 10000ULM with a 10 W/mK thermal conductivity and plans for a 12 W/mK version. For TIMs, DOW introduced the DOWSIL TC-3065 Thermal Gel with a thermal conductivity of 6.5 W/mK and bondline thicknesses down to 150 microns, specifying applications in optical transceivers, solid-state disks and other network devices. Several new thermal materials for 5G applications were released in 2020. Additionally for 2020, Apple's first 5G phones, the iPhone 12 lineup, all use graphite heat spreaders and have not adopted vapor chambers. For example in 2020, Samsung, who have previously hyped vapor chambers, have used a graphite heat spreader or a copper vapor chamber in the Note 20 interchangeably. However, their future is far from set, with several high-end models still using graphite heat spreaders for their reduced complexity, cost and weight. Recent years have seen an increasing application of vapor chambers within smartphones to improve heat spreading. The key markets will be for thermal interface materials (TIMs), heat spreaders and thermal insulation materials. This presents an opportunity for materials suppliers to address these challenges. Material utilization around the mmWave antenna also reveals challenges with signal propagation. Early 5G phones were commonly reported to overheat rapidly, especially in warmer climates when using mmWave, dropping to the use of 4G to keep temperatures down. The first 5G smartphones came to the market in 2019, but the market has expanded rapidly in 2020. Regardless of the root cause, the importance of preventing cell overheating and detection and containment of thermal runaway is a topic of growing importance.ĥG promises incredible download rates and extremely low latency communication. The causes of these fires have varied with contaminants in the cells being the cause in some cases and poor thermal design allowing batteries to overheat in others. Contacts in the industry have revealed to IDTechEx that EVs will become safer than conventional vehicles, but currently, almost every OEM with an EV has had at least one serious fire-related incident. This has not just been limited to a few OEMs either. General Motors has recalled 68,667 Chevrolet Bolts, telling owners not to park their cars near their house or in their garage for risk of fire. ![]() In China, 10,579 battery electric vehicles (BEVs) and plug-in hybrids (PHEVs) have been recalled due to fire hazards across 7 OEMs (January to October). Electric vehicles (EVs) are the future of the automotive industry unfortunately 2020 appears to have been the year of the EV recall due to battery fires.
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