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Tesla patents new chemistry for better, longer-lasting and cheaper batteries – Electrek

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3 years ago

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Tesla has made a lot of battery moves this year and it is closing the year by filing a patent on a new chemistry for better, longer-lasting and cheaper batteries.

Earlier this year, we reported on Tesla’s battery research partner, Jeff Dahn and his team at Dalhousie University, unveiling the impressive results of tests on a new battery cell that could last over 1 million miles in an electric vehicle.

The new battery tested is a Li-Ion battery cell with a next-generation “single crystal” NMC cathode and a new advanced electrolyte.

Since then, Tesla has been filing US and international patents on the new battery chemistry.

The automaker, through its ‘Tesla Motors Canada’ subsidiary, filed a new international patent called ‘Dioxazolones and nitrile sulfites as electrolyte additives for lithium-ion batteries’.

They wrote in the patent application:

“This disclosure covers novel battery systems with fewer operative, electrolyte additives that may be used in different energy storage applications, for example, in vehicle and grid-storage. More specifically, this disclosure includes additive electrolyte systems that enhance performance and lifetime of lithium-ion batteries, while reducing costs from other systems that rely on more or other additives.”

Tesla wrote in the conclusion of the patent application for the new battery chemistry:

“This work characterizes the high temperature storage and long-term cycling performance of lithium-ion NMC/graphite pouch cells prepared with a recently developed electrolyte additive, MDO, and two new additives, PDO and BS. Differential capacity versus voltage indicates that both MDO and PDO form passive SEI layers on the graphite electrode surface during cell formation, whereas BS does not. The reduction features are generally consistent with DFT-predicted values, although the presence of multiple reduction peaks requires additional study to rationalize. As individual additives, PDO-containing cells show the best performance although these are nonetheless out-performed by VC-containing cells. The additives were also tested in binary blends with VC, DTD, and LFO. In long-term cycling tests, cells prepared with 2%PDO/l%DTD and 2%PDO/l%LFO additive blends outperform VC-containing cells. However, the high temperature storage behavior of 2%PDO/l%LFO is superior than that of the 2%PDO/l%DTD blend. A person of skill in the art will understand that compositions described herein may be further optimized, for example, by adjusting the ratio of primary and secondary additives or through introducing ternary blends.”

The patent application says that the new two-additive mixtures in an electrolyte solvent can be used with lithium nickel manganese cobalt compounds, also known as an NMC battery chemistry.

It is commonly used in electric vehicles by many automakers, but not by Tesla. The company used the technology in its stationary energy storage systems, but it uses NCA for its vehicle battery cells.

The patent filed by Tesla’s battery research group mentions that the technology would be useful for both electric vehicles and grid-storage.

Interestingly, Tesla has been rumored to be switching to NCM battery cells for Chinese Model 3 vehicles.

Tesla has been filing new battery patents as it has also been making moves toward building its own battery cells.

Earlier this year, Tesla CEO Elon Musk said that they built Model 3 to last as long as a commercial truck, a million miles, and the battery modules should last between 300,000 miles and 500,000 miles.

However, the CEO claimed that Tesla has a new battery coming up next year that will last a million miles.

Here’s Tesla’s full patent application:

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Everything We Expect at Samsung Unpacked, From Galaxy Z Fold 4 to Galaxy Watch 5 – CNET

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7 hours ago

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August 9, 2022

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Samsung’s next Galaxy Unpacked event is scheduled for Wednesday, Aug. 10. We expect to see several new versions of the company’s flagship foldable phones and smartwatches to be revealed — but there’s always a chance for surprise launches of new devices.

The event invitation seen above, showing a Z Flip foldable phone, suggests we’ll see new versions of Samsung’s foldables. That fits with a previous leak from tipster Evan Blass predicting new versions of the Samsung Galaxy Z Fold 3 and the clamshell Samsung Galaxy Z Flip 3, which came out in August 2021. 


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Don’t expect too many big advances with Samsung’s next foldables. Rumors suggest the tablet-size Samsung Galaxy Fold 4 may have a new hinge and slimmer build, but the leaker jury is out on whether it will include an S Pen slot like the Samsung Galaxy S22 Ultra. Other rumors predict that the foldable will pack the faster Snapdragon 8 Gen 1 Plus chipset, as well as a larger outer display that requires its own under-display camera to complement the one on the inner screen.  

The makeup compact-looking Samsung Galaxy Z Flip 4 could get a larger cover display, according to other rumors, which could make it far more useful for reading notifications and previewing selfie photos. 

Even if the new foldables have only incremental spec upgrades, the biggest improvement could be price. The Galaxy Fold 3 was cheaper than its predecessor at $1,800 (£1,599, AU$2,499) to start, which is still around twice as expensive as most premium smartphones. The Galaxy Z Flip 3 shockingly came in at $1,000 (£949, AU$1,499), or around the price of an iPhone 13 Pro, making it the most affordable foldable yet and a viable alternative to standard flat smartphones. 

But the upcoming Z Fold 4 and Z Flip 4 could be even cheaper, predicts analyst Ross Young, CEO of Display Supply Chain Consultants, who tweeted that Samsung ramped up production to churn out twice as many of the new foldables as last year’s models, suggesting a possible price cut. 

Read more: Here’s One Feature Samsung Could Use to One-Up Apple

In any case, we expect the new foldables to sell well, since the Z Fold 3 and Z Flip 3 sold more units in their launch month than were sold in all of 2020. With 88% of the more than 7 million foldables sold in 2021, Samsung is in a strong position to continue dominating the niche foldable market, which is expected to grow to over 27 million sold in 2025.

Samsung could launch other products to accompany the foldables, and the most likely is the Samsung Galaxy Watch 5. Rumors predict the next version of the premium smartwatch line could get a body temperature sensor and better battery life, as well as an updated design. Hopefully, it will also fix a glaring flaw in the Galaxy Watch 4 — no support for iPhones — as well as better integration of Wear OS 3, as we felt last year’s watch pulled between Google and Samsung’s ecosystems. 

There are other things Samsung could show off, like successors to the Galaxy Buds 2 earbud, tablets or laptops, but we haven’t heard many rumors suggesting any of those are likely to arrive. Still, we could easily be surprised with all eyes on the awaited foldables.

To encourage customers to reserve their phones early, from July 19 until August 10, Samsung is offering an extensive list of discounts based on different bundles, from a maximum of $200 off for those reserving a Galaxy phone, watch, and buds down to a minimum of $30 off for just reserving Galaxy buds. While this could be a hint at what’s coming at Unpacked, the savings could apply to older Galaxy Watch or Galaxy Buds models.

The event is scheduled to begin at 9 a.m. ET / 6 a.m. PT. CNET will be watching and covering the reveals.

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Samsung’s Galaxy Unpacked event: start time and how to watch – The Verge

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10 hours ago

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August 9, 2022

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Samsung Galaxy Unpacked is set to begin on Wednesday, August 10th.

Leading up to the event, Samsung has left us with breadcrumbs about what they’re going to announce at their Galaxy Unpacked event. Leaks and other clues have revealed that Samsung may be announcing an updated foldable to match last year’s announcement and release.

We also have a guess that there might be some new Galaxy Watches to announce as Samsung released a reservation for a trade-in for the Galaxy smartphone, smartwatch, and earbuds.

When does the Samsung Galaxy Unpacked event take place?

The Samsung Galaxy event is set to take place on Wednesday, August 10th, 2022, at 6AM PT / 9AM ET.

Where can I watch the Samsung Galaxy Unpacked event?

We will have the livestream video embedded up top, so you can stick around here to watch when it begins. Otherwise, you can tune in to the Galaxy Unpacked livestream at Samsung.com, Samsung’s Newsroom, and Samsung’s YouTube channel.

We here at The Verge will also be covering the event. Be sure to follow @verge on Twitter and @verge on Instagram for live updates and other Samsung news.

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Samsung Galaxy Unpacked: How to watch Samsung announce its latest foldable phones – ZDNet

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20 hours ago

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August 9, 2022

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Image: Samsung

On Wednesday, Samsung is expected to announce new foldable phones, wireless earbuds, and a new Galaxy Watch. If all of the leaks and rumors are true, that means we’ll see the Galaxy Z Fold 4, Z Flip 4, Buds 2 Pro and the Galaxy Watch 5 (and maybe even a Pro model). 

Who knows, Samsung could have other products lined up for announcement. We simply won’t know what all it entails until the livestream ends. 

When is Samsung Galaxy Unpacked?

The event kicks off early Wednesday, Aug. 10, with the livestream starting at 9 a.m. ET/6 a.m. PT. There isn’t an in-person element to the event as companies continue to stick to a virtual-only approach for product announcements. 

Here are the different international times for your reference:

  • New York: 9 a.m. ET
  • San Francisco: 6 a.m. PT
  • London: 2 p.m. GMT
  • Berlin: 3 p.m. CET
  • Mumbai: 9:30 p.m. IT
  • Tokyo: 11 a.m. JT Jan. 15
  • Sydney: 1 a.m. AEDT Jan. 15

How to what Samsung Galaxy Unpacked

If you want to tune in and watch the announcements as they’re made, then you’re in luck. Samsung is broadcasting the livestream across several different platforms. Here’s everywhere you can watch the official stream:

What to expect from Samsung Galaxy Unpacked

Samsung itself has dropped some major hints about what to expect from the announcement. Certainly, there are new foldable phones — likely the Z Fold 4 and Z Flip 4 — on tap to be announced. 

In addition to the new phones, Samsung’s Galaxy Watch5 appears set to get an upgrade, with a new Watch5 Pro model, which early leaks indicate will be more rugged and more of a competitor to Garmin’s line of smartwatches. 

Finally, Samsung’s Galaxy Buds Pro appear primed for an upgrade with the Buds 2 Pro adding new active noise cancellation features and a refreshed design to the company’s completely wireless earbuds. 

We’ll have full event coverage as Samsung’s latest Galaxy Unpacked event kicks off bright and early on Wednesday, Aug. 10. 

What’s something you’re hoping to see Samsung announce during the event? Let us know in the comments below.

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