Tesla Patents Anode-Free Battery Tech as EV Batteries Rapidly Improve

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Tesla is looking into a new battery and has applied for a patent on new electrolyte solutions for new lithium metal or anode-free battery cell, while the International Energy Association (IEA) says battery technology has been rapidly improving.

Tesla's current batteries offer great advantages when it comes to energy density and costs, but it needs improvements when it comes to longevity.

Tesla’s battery research partner, Jeff Dahn and his team at Dalhousie University claim that their new electrolyte would help improve just that:

“Provided are electrolyte solutions including both lithium difluoro(oxalato)borate and lithium tetrafluoroborate and a solvent component for use in lithium metal or anode-free rechargeable battery cell and methods of using the electrolyte solutions to improve capacity retention of the battery cells. Also provided are rechargeable battery systems including lithium metal or anode-free battery cell and electrolyte solutions including both lithium difluoro(oxalato)borate and lithium tetrafluoroborate and a solvent component. The systems described herein exhibit improved capacity retention.”

In the patent application, they do release test results showing improvements in battery capacity retention, but they don’t seem to have pushed the cells beyond 50 cycles for now. They would need to put the batteries to many more cycles in order to make them viable for commercialization.

In the meantime, electric car batteries are rapidly improving, says the International Energy Association in new research. It only briefly mentions Tesla, but the impressions of Tesla’s tire-prints aren’t hard to detect in the section on projected trends in the battery field.

Evannex reports.

"Briefly stated, battery capacities are going up, and battery costs are going down, and Tesla continues to be an important driver of both these trends. By 2030, the IEA expects the average EV to have a battery size of 70-80 kWh, and an average range of 217-248 miles. That figure may sound overly conservative to a Tesla owner (250 miles is about the lowest range you can get in a Tesla today). However, the maximum range isn’t everything, and the IEA may be projecting large numbers of low-priced EVs aimed at buyers for whom a 200-mile range is quite sufficient.

"The IEA expects global EV battery capacity to explode (figuratively speaking, of course), from around 170 GWh per year today to 1.5 TWh per year in 2030 (in the “Stated Policies Scenario,” based on existing government policies) or 3 TWh (in the “Sustainable Development Scenario,” based on the climate goals of the Paris Agreement). Modes of transport other than cars are expected to account for only 11% of battery demand in 2030, so electric passenger cars (Tesla’s specialty) are central to the development of the battery market.

"Battery costs are expected to continue their steady downward trend. According to the IEA, battery pack prices averaged more than $1,100 per kilowatt-hour in 2010. By 2019 they had fallen to $156 per kWh. Industry pundits posit that a pack-level price of $100/kWh will prove to be the tipping point at which EVs can be sold for the same price as legacy vehicles, and will herald the final days of the Oil Age. No automaker publishes the price of its packs, but it’s widely believed that Tesla’s costs are below the industry average, and some expect the company to announce that it has cracked, or at least gotten close to, the magic $100 mark, at Battery Day on September 15."


This is Armen Hareyan from Torque News. Please, visit us at https://www.TorqueNews.com for daily car sector news and follow us on Twitter at https://twitter.com/torquenewsauto for daily automotive sector tweets. And if you would like to support our channel, I would really appreciate buying us animated applause once a month by clicking on the applaud button, which is next to the Like button, if you are watching this video on a desktop. You can go to https://www.TorqueNews.com/tesla for our daily Tesla news coverage.

Evannex https://evannex.com/blogs/news/the-iea-s-latest-global-ev-outlook-highlights-improving-battery-tech
Electrek https://electrek.co/2020/07/09/tesla-patents-lithium-metal-or-anode-free-battery/
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