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Zenlabs says its silicon anode cells are ready for commercialization after 1,000-cycle testing.
Zenlabs says its silicon anode cells are ready for commercialization after 1,000-cycle testing
Why is this important?
These cells can charge from 10% to 80% in 10 minutes, and to 90% in 15 minutes, so they are a step to making faster charging EVs. The aim is 10% to 80% in about 5 minutes to compete with fossil filling stations in terms of facility size & convenience.
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Sounds like a great leap in technology, but 5 mins to compete with fossil fuel stations… only if they don’t have the supermarket instore!
But what will the working life of such cells be? We know fast charging reduces the life of current EV batteries.
If this technology is going to be available soon combined with a decent range in the 300’s or 400’s I think it would tick every box. Of course there will still be some sceptics.
Great article julie, thanks.
The only person who got all his work done by Friday was Robinson Crusoe.
Anything i post over three lines long please assume it is an article lol.But what will the working life of such cells be? We know fast charging reduces the life of current EV batteries.
1000 cycles degradation detailed in those graphs, so about 82% capacity after charging from zero to 100% 1000 times, something you’d never do. Most BEVs get charged from 10-30% charge upto 80-90% on rapid chargers, the slower AC charging at home doesn’t heat up & degrade the batteries in the same way & the car slows the charge rate down to the 6 amps minimum 98-100% as it does its balance charge (where all the cells are brought upto the same SoC by supressing individual cell charge using the BMS (battery management system)).
N.B. Most lithium batteries go bad because of BMS faults & engineers underrating the BMS to save money, but in cars they usually try better because of the higher values of such large battery packs.
N.B. 1000 charges is about 1 per week for 20 years, 2 per week for 10 years, etc.
N.B. The easiest way to kill a lithium battery pack is to leave it at zero charge for a few months, it won’t revive again unless you take it all apart & gently shunt some power into each cell from spare charged cells, and you’ll not be doing that as it would take an age without dedicated equipment.
Yes, gothitjulie, I know about current battery technology. I was asking about the proposed use of silicon anode cells.
If this technology is going to be available soon combined with a decent range in the 300’s or 400’s I think it would tick every box. Of course there will still be some sceptics.
I’d make a guess that those ranges & this battery tech will be in cars around 2025.
Yes, gothitjulie, I know about current battery technology. I was asking about the proposed use of silicon anode cells.
From the article detailing the tests on the silicon anode cells:
“The cells tested by INL have completed 1,000 dynamic stress test (DST) cycles following the USABC three-hour charge protocol, and over 900 DST fast charge cycles using a 4C rate or 15-minute charging protocol under 100% depth of discharge (DOD). The high-rate capable cells can be charged to 80% of their capacity in 10 minutes and to 90% of their capacity in 15 minutes. Zenlabs says its silicon anode cells enable a vehicle with a 300-mile range, and a potential battery life of up to 300,000 miles.”
Why would you make that guess, gothitjulie? What do you base it on?
Based on the company’s cars that are already 3-4 years ahead… Tesla, and the way that the rest are trying to play catch up.
Ah, Elon Musk said it.
Well, here you go, & it’s OK to ask when that Tesla Roadster is coming on the scheme, but you already know what the reply will be:
https://www.edfenergy.com/for-home/energywise/electric-cars-longest-range
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