Eigenlijk evident met Gigafactory 1:
Tesla/Panasonic nieuwe accucellen (formaat 2170) zullen de hoogste energiedichtheid (Wh/kg) hebben (duurzame voor E-auto´s) en zouden nog eens de goedkoopste van de wereld zijn (vooral dat laatste is het moeilijkste, ik denk dat weinige van Tesla wat anders verwacht hadden...)
De huidige 1865-cellen halen duurzame ca. 250 Wh/kg (> 1000 cyclus) en -het ganse- accupack kost minder dan $190/kWh.
Men schat wslk duurzame > 300 Wh/kg en minder dan $140/kWh voor een Tesla 3 accupack. Gigafactory alleen zou namelijk de productiekosten al doen dalen met 30 %, $190-30 %= $ 133/kWh, als Gigafactory op volle pruductie draait zal het richting $ 100/kWh gaan.
ook info en graphs uit:
Citaat:
https://electrek.co/2016/11/02/tesla...est-elon-musk/
November 2
Elon Musk on Tesla/Panasonic’s new 2170 battery cell: ‘highest energy density cell in the world…that is also the cheapest’
[...]
Tesla’s current custom 18650 battery cells produced by Panasonic are estimated to have an energy density of ~250 Wh/kg and the cost is variable (depending on energy density use case – Powerwalls and Tesla auto use cases currently have different energy densities and are unknown. A Tesla official said earlier this year that the cost of its battery pack was “less than $190 per kWh”, which would indicate that the cells are about $100 to $150 per kWh depending on the battery pack level cost.
It will be interesting to see how the new 2170 cell compares to those specs. We should know more in the coming weeks as production starts at the Gigafactory.
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(wordt opgevolgd)
Citaat:
http://www.greencarcongress.com/2016...1003-sion.html
Citaat:
I'm glad to see Sion Power improving their cells.
The next step-change for Tesla cells will be the 2170 cells for the Model 3 - I expect a significant increase (probably over 300Wh/kg and 800 Wh/l). The key that Tesla invested in with the P100D is the increased pack volume efficiency - the same size pack can hold more cells because of cell and cooling layout. This is needed for the Model 3 to hold all the cells for the high-capacity battery pack.
A 500/1000/1000 (Wh/kg, Wh/l, cycles) cell would be insanely great, but I don't expect them in any time frame I would plan an EV around (3 years). That said, with the increased packing efficiency of the new Tesla packs, you're looking at dramatically cutting pack weight as well as extracting 20% more energy per unit volume. An future Model S pack (assuming similar volume) could hold 120-130kWh of energy and weigh 150kgs less. Or just hold the same 100kWh and weigh 200kgs less.
And 1,000 cycles at 350 miles per cycle is 350,000 miles to 80%. Its really higher than that because, at least with today's Li-Ion batteries, the more shallow the cycles (e.g. 60% to 40% five times vs. 100 to 0 once), the less strain it has on the internal battery structure, so you'll get more than 1,000 cycles to 80% capacity reduction.
Posted by: Anthony F | October 03, 2016
I think the "annual 7-8% battery improvement" is about to become a 10-12% annual battery improvement simply because there has been so much investment the last 5 years.
Posted by: DaveD | October 03, 2016
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Sion Power reports 400 Wh/kg, 700 Wh/L and 350 cycles under 1C for Li-ion battery with Li-metal anode technology
3 October 2016
Sion Power reported that a Licerion-Ion system has achieved 400 Wh/kg, 700 Wh/L and 350 cycles under 1C discharge conditions. Dr. Yuriy Mikhaylik, Sion Power’s Director of Materials, is presenting details on this performance in an invited presentation at the ECS meeting in Honolulu this week.
Licerion, a product of Sion Power’s technical collaboration with BASF (earlier post), is a comprehensive battery system that significantly enhances the energy and cycle life of rechargeable batteries using a physically protected metallic lithium anode. The physical protection is based on ceramic-polymer composite membranes and is combined with specialized cell design and electrolyte systems providing smooth, dendrite-free lithium deposition and chemical protection of the exposed metallic lithium surface. This approach addresses the safety and cycle life problems that have historically plagued lithium-metal electrodes.
Sion combines its protected lithium anodes with intercalated metal oxide cathodes typically used for Li-ion batteries (Licerion-Ion) and with advanced sulfur cathodes (Licerion-Sulfur).
Sion, in collaboration with BASF, is targeting 500 Wh/kg, 1000 Wh/L and 1000 cycles.
Sion Power’s Licerion-Sulfur products are being commercialized via its partnership with Airbus Defence and Space. (Earlier post.) An earlier version of the technology was employed in setting a world record for the longest duration unrefueled flight for a high altitude pseudo-satellite (HAPS).
Sion Power is in the process of expanding its facilities in Tucson, Ariz. for the production of prototype large format Licerion Ion cells. These cells will be available by December 2017. In the interim, Sion Power is evaluating potential volume manufacturing partners to supplement in-house capacities.
https://en.wikipedia.org/wiki/Lithiu...sulfur_battery
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Of de Lithium-Zwavel-cellen (of Li-metaal) van Sion /BASF concurrentie, of ook voor auto-accupacks gebruikt, gaat kunnen worden zullen we ook ten laatste in 2018 weten, in elk geval is daar zelfs 500 Wh/kg realistisch, maar auto-accu´s moeten ook duurzaam zijn, dus voldoende volledige laadcyclussen +1000 en tegelijkertijd maar heel weinig capaciteitsverlies hebben, en vooral aan dat laatste haperde het, 3e bron 2/2014:
(maar Sion maakt daar blijkbaar vorderingen) http://www.elektroniknet.de/power/en...rtikel/105459/