Researchers at the Tesla-funded battery research centre at Dalhousie University have discovered an amazingly simple reason why lithium-ion batteries self-discharge over time, even when they are not in use: The use of adhesive tape.
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The battery research team around Jeff Dahn continues to work on the million-mile battery. As the Tesla battery researcher explained at an online conference, the actual goal is not to make an electric car drive 1.6 million kilometres with it but to be able to use the battery in V2G applications.
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The battery research team led by Jeff Dahn at Canada’s Dalhousie University has received six million US dollars. The Natural Sciences and Engineering Research Council (NSERC) is providing $2.9 million of this, with another $3.1 million coming from Tesla.
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Tesla has extended its battery research partnership with Canada’s Dalhousie University, which has been in place since 2016, until at least 2026. Jeff Dahn will now be supported by Chongyin Yang and the former Bosch researcher Michael Metzger.
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Tesla battery researchers around Jeff Dahn have presented updated test results for their battery cells. Instead of one million miles, the batteries are now expected to last 10,000 cycles and provide traction power for more than two million miles – that’s about 3.2 million kilometers.
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Tesla’s battery research partner Jeff Dahn from Dalhousie University provides an update on the new approach to cells with significantly higher energy density, which was presented last year. These should be suitable not only for cars, but also for electric aircraft and drones.
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Reuters claims to have more details about Tesla’s battery cell plans. The announced “million-mile” battery is expected to come in early 2021 at the latest and may break the 100$/kWh barrier. Plus, Tesla now thinks in “terrafactories”.
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According to a media report, Tesla has commissioned the South Korean company Hanwha to supply equipment for battery formation. This is probably equipment that Tesla is already ordering for its intended cell production.
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Tesla’s project for the mass production of its battery cells is to be called Roadrunner and aims to reduce costs to 100 US dollars per kilowatt-hour. This 100$/kWh milestone has long been considered the key to electric cars achieving price parity with ICEs without subsidies.
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Tesla has submitted a new patent for improved battery cell chemistry under the title “Dioxazolones and nitrile sulfites as electrolyte additives for lithium-ion batteries”. This is intended to increase the performance and service life of the batteries as well as reducing costs.
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Jeff Dahn and his team, who carry out battery research for Tesla, have published test results for a new battery cell that could have a life of 1 million miles (1.6 million km) and thus be suitable for Tesla’s planned robo taxis. At the same time, Tesla battery cell manufacturing appears to be well underway.
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Battery expert Jeff Dahn of Dalhousie University has been Tesla’s research partner since 2016 and is now reporting on a new approach to higher energy density cells. These are lithium metal cells in pouch format with liquid electrolyte.
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“We’re open to anything that makes sense.”
Jeff Dahn, a leading battery researcher and teacher at Dalhousie University, has taken an exclusive contract with Tesla and was asked to do whatever it takes to improve battery performance. With many wondering if Tesla can realistically reach their targets, Dahn’s contract may signal that Musk is open to other methodologies.
qz.com
Shad Balch, New Product and Public Policy Communications at General Motors, talks about the upcoming Chevy Bolt, undaunted by the Tesla Model 3. While the Model 3 has been getting ample press, Balch says it has channelled more interest in the Bolt, which will be on the roads before the Model 3.
lompocrecord.com
Jeff Dahn, leading lithium-ion battery researcher and professor at Dalhousie University, recently signed a 5-year exclusive partnership with Tesla, who is now using silicon in its 90 kWh batteries to increase capacity, but not the size.
fortune.com
ZF engineer Gerhard Gumpoltsberger says that two or more gears only make sense for larger machines like trains and heavy trucks.
autoblog.com
“We’re open to anything that makes sense.”
“It helps. It helps the whole industry. Every story about the Model 3 includes a mention of the Bolt EV and our target date is ahead of theirs. We’re on track.”
“It’s a race among the battery makers to get more and more silicon in. The number of researchers around the world working on silicon for lithium-ion cells is mindboggling. A large number of academics and industrial folks are working really hard on this problem.”
“Even for Tesla, which is very powerful but also fast, one gear is enough.”