Comments on: Next-Generation Lithium-Ion Battery Designed, Should Hit Market Within 2-3 Years

By: Sama

Sama — Wed, 23 Oct 2013 01:23:00 +0000

Except that the SCiB has a 100% DoD (Depth of Discharge) and the LEAF’s battery is limited to 50%. It is limited for a number of reasons including minimizing strain on the battery and extending cycle life. So usable energy, the LEAF battery is closer to 75 Wh/kg.

By: Bob_Wallace

Bob_Wallace — Wed, 20 Feb 2013 16:13:00 +0000

Thanks, I’ll check that out. When I looked on line I saw 79 Wh/kg for the LEAF. That site could have had it wrong.

By: David Snydacker

David Snydacker — Wed, 20 Feb 2013 14:48:00 +0000

Bob, I agree with everything you said, except the LEAF comparison. LTO anodes are durable, but they don’t offer great energy density and are therefore more expensive per kWh. Leaf’s LMO-LNO/C battery has ~155 Wh/kg at the cell level, according to parameters listed on the AESC website.

By: Bob_Wallace

Bob_Wallace — Wed, 20 Feb 2013 05:16:00 +0000

Honda FiT and Mitsubishi’s i-MiEV.

I don’t know if they’re getting the 6,000 cycle version or an earlier version which had a lower cycle life.

The LEAF uses a different battery. They just changed sources in order to get a better price. And they have their own battery plants.

By: Bob_Wallace

Bob_Wallace — Wed, 20 Feb 2013 05:13:00 +0000

Sure, we’ve almost certainly in the early days of a wind and solar avalanche. And major upgrades to the grid are underway.

By the time EVs become the most purchased new cars per year we’ll be more than ready for them.

By: Otis11

Otis11 — Wed, 20 Feb 2013 04:55:00 +0000

Wait, so the stats you’re quoteing – those aren’t what’s in the current LEAF though correct?

Because I’m seeing that it’s a 100,000 mile battery pack (likely more, but only that is guaranteed) It also takes a lot longer than 10 minutes…

Is that SCiB battery being used anywhere currently?

Thanks for the great info!

By: Otis11

Otis11 — Wed, 20 Feb 2013 04:50:00 +0000

In the time it would take to produce that many EVs, we could easily fix the transmission problem – potentially by more point of use solar! (Probably the easiest way, but I don’t have any numbers to support that)

By: Bob_Wallace

Bob_Wallace — Wed, 20 Feb 2013 01:57:00 +0000

“The existing electricity infrastructure as a national resource has sufficient available capacity to fuel 84% of the nation’s cars, pickup trucks, and SUVs (198 million) or 73% of the light duty fleet (about 217 million vehicles) for a daily drive of 33 miles on average.

There are significant emissions impacts resulting if the gasoline-based LDV fleet were to transition to a PHEV technology.

Greenhouse gases and some criteria emissions would be reduced based on total emission figures. Particulates and SOX emissions would increase as a result of increased dispatch of coal-fired power plants. There are regional differences that depend upon the mix of coal and natural-gas-fired power plants.

All emissions in urban areas are expected to improve because of the shifting of the emission source from millions of individual vehicles in population centers to central generation plants that are traditionally located away from population centers.”

http://www.ferc.gov/about/com-mem/wellinghoff/5-24-07-technical-analy-wellinghoff.pdf

There’s a follow-up study which found that at the time of the study we did not have adequate transmission to get all that power to vehicles. It lowered the amount by about 10%. But the important thing is that the grid is more than ready to accept large scale movement to EVs and PHEVs.

By: Bob_Wallace

Bob_Wallace — Wed, 20 Feb 2013 01:43:00 +0000

The Toshiba SCiB can undergo 6,000 100% DoD charge/discharge cycles and still have more than 80% capacity.

That makes it a 400,000+ mile battery in the LEAF.

It can be fully recharged in less than 10 minutes.

90 hW/kg. That’s about 14% better than what the LEAF is using now. But we need more.

http://www.toshiba.com/ind/data/tag_files/SCiB_Brochure_5383.pdf

We have enough “spare” capacity during off-peak hours to charge over 80% of all US cars if they turned into EVs over night. If we include transmission capability it drops into the high 70% range.

By: Otis11

Otis11 — Wed, 20 Feb 2013 01:05:00 +0000

So, let me get this right:
3X the battery life
10X charge cycles
10 minute quick charge

That means if we took the Nissan Leaf it would be able to go 220 miles per charge, recharge in 10 minutes and the battery would last longer than the car…

Seriously? If these come out in the next 3 years we’re going to have a whole different problem: can our electric grid support 100% EVs right now?

I’d take that problem any day, but seriously. If that were an (affordable) option, why would anyone buy an ICE?

Please keep us up to date on this!

By: Zachary Shahan

Zachary Shahan — Wed, 20 Feb 2013 00:31:00 +0000

Nice.

Must be fun.

By: tibi stibi

tibi stibi — Tue, 19 Feb 2013 15:32:00 +0000

i read a lot about this stuff and it is fun to see how it goes from, an idea, to a prototype, to mass production. and the media goes along with it. first only on specialized blogs, than on some more and now i read it in holland on nu.nl a mainstream news site.

hope it really be 2-3 years than the new economy with very cheap electric energy on can take off!!