JRP3
Posts: 390
Joined: Sat Feb 26, 2011 12:04 pm
Delivery Date: 26 Jun 2015
Contact: Website

Re: All "Future" battery technology thread

Mon Dec 15, 2014 6:00 am

Not sure what you mean. Any energy source used to drive an EV, which is what kikingas was talking about, would have to be high voltage. Capacitors would need to be connected in series to increase the voltage to a usable potential, hence, high voltage on the skin of a vehicle. Bad idea.

User avatar
RegGuheert
Posts: 5331
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: All "Future" battery technology thread

Mon Dec 15, 2014 7:15 am

JRP3 wrote:Not sure what you mean.
What I mean is that ultracapacitors are very dangerous, even at low voltages, which is what the referenced article discussed.
RegGuheert
2011 Leaf SL Demo vehicle
2011 miles at purchase. 10K miles on Apr 14, 2013. 20K miles (55.7Ah) on Aug 7, 2014, 3K miles (52.0Ah) on Dec 30, 2015, 40K miles (49.8Ah) on Feb 8, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

bluedream42
Posts: 30
Joined: Sat Oct 08, 2011 11:41 am
Delivery Date: 01 Sep 2011
Leaf Number: 7673

Re: All "Future" battery technology thread

Mon Dec 15, 2014 8:26 pm

As Elon Musk says, "Send me a cell and I'll test it".

Any radical chemistry/ultracapacitor is years off.

Places a bet with Vegas - Lithium Sulfur
Now driving Silver 2015 SV w/ QC
retired a 2011 Cayenne Red SL, had only 22,000 mi.

User avatar
LTLFTcomposite
Posts: 4129
Joined: Fri Apr 23, 2010 6:06 pm
Delivery Date: 10 Dec 2011
Leaf Number: 5926
Location: Boca Raton FL

Re: All "Future" battery technology thread

Mon Apr 06, 2015 12:46 pm

http://phys.org/news/2015-04-ultra-fast ... ative.html

Yet another battery announcement (YABA-dabba-doo)
LTL
White 2012 SV delivered 10 Dec 2011 returned 25 Nov 2014 replaced with stopgap ICE Sentra
[35 months] [35K miles] [9 Bars]
2013 Volt replaced after 36 months/30k miles with ICE Rogue

GRA
Posts: 6664
Joined: Mon Sep 19, 2011 1:49 pm
Location: East side of San Francisco Bay

Re: All "Future" battery technology thread

Mon Apr 06, 2015 5:50 pm

Perhaps more importantly, via GCR:
Patent Fight Erupts Over Next-Generation Electric-Car Battery Chemistry
http://www.greencarreports.com/news/109 ... -chemistry

This is based on an article in 'Quartz' by Steve Levine, on who owns the patent on NMC. I've just recently read Levine's book "The Powerhouse: Inside the Invention of a Battery to Save the World", http://www.amazon.com/The-Powerhouse-In ... 0670025844

which describes the development of NMC, in particular as it relates to Envia and GM. I need to write a review and add it to my "EV Bibliography" page, as it sort of takes up where Seth Fletcher's "Bottled Lightning" left off, albeit more focused on a single subject.
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].

The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.

AndyH
Posts: 6325
Joined: Fri Apr 23, 2010 3:43 pm
Location: San Antonio

Re: All "Future" battery technology thread

Fri Apr 10, 2015 12:18 pm

GRA wrote:Perhaps more importantly, via GCR:
Patent Fight Erupts Over Next-Generation Electric-Car Battery Chemistry
http://www.greencarreports.com/news/109 ... -chemistry

This is based on an article in 'Quartz' by Steve Levine, on who owns the patent on NMC.

Crap. This kind of silliness severely impaired A123, and separate fights negatively impacted a large portion of the LiFePO4 manufacturers over some of Phostech's patent claims. The last thing the nascent electrification revolution needs is Ovonic and Chevron, Part 2...or 6... :(
"The stupid become extinct."-Bill Mollison

2015 smart Electric Drive "The Bumblebee"
OpenEVSE Plus DIY

User avatar
DNAinaGoodWay
Gold Member
Posts: 2587
Joined: Mon Dec 17, 2012 1:43 am
Delivery Date: 03 Dec 2012
Leaf Number: 23156
Location: Central Massachusetts

Re: All "Future" battery technology thread

Fri Nov 13, 2015 9:55 am

Daresbury and Berkeley scientists declare 'world breakthrough' that could double electric car battery life - Liverpool Echo
https://apple.news/ASg7wEWQ1QUSGExYSSs0U0g
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new

@ 25 months, 25k, 267 GID, 56.88 Ahr
@ 29 months, 29k, 286 GID, 60.88 Ahr
@ 31 months, 30.3k, 274 GID, 58.39 Ahr

6.72 kW Array

User avatar
Nubo
Posts: 4240
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: All "Future" battery technology thread

Fri Nov 13, 2015 12:15 pm

Argonne National Laboratory status at "halfway point":

http://us7.campaign-archive1.com/?u=b90 ... 25e58b75d5
I noticed you're still working with polymers.

OakLeaf
Posts: 94
Joined: Tue Dec 11, 2012 1:00 pm
Delivery Date: 21 Nov 2012
Location: Telford, PA

Re: All "Future" battery technology thread

Tue Jan 26, 2016 2:42 pm

Stable "superoxide" opens the door to a new class of batteries - a lithium–oxygen battery based on lithium superoxide.


http://www.anl.gov/articles/stable-superoxide-opens-door-new-class-batteries

http://www.nature.com/nature/journal/v529/n7586/full/nature16484.html



Still a long way (if ever) from a commercial battery, but it's always good to see hints of the future.

User avatar
RegGuheert
Posts: 5331
Joined: Mon Mar 19, 2012 4:12 am
Delivery Date: 16 Mar 2012
Leaf Number: 5926
Location: Northern VA

Re: All "Future" battery technology thread

Sun Feb 28, 2016 8:20 am

BioSolar is developing a novel Super Battery cathode material which uses an advanced, low-cost polymer to replace the intercalation cathode material in a LI-ion battery. Here are their claimed characteristics:

Image

Add to this very high cycle life and you have an extremely attractive battery. Here is some of the verbiage from their site:
BioSolar wrote:Our novel high capacity cathode is engineered from a polymer, similar to that of low-cost plastics used in the household. Through a smart chemical design, we are able to make the polymer hold an enormous amount of electrons. Instead of conventional cathodes that use lithium-ion intercalation chemistry, which is inherently slow, we exploit the fast redox-reaction properties of our polymer to enable rapid charge and discharge.

Most lithium-ion batteries cannot retain more than 80% of its storage capacity after 1,000 charge-discharge cycles. The stable redox chemistry of our cathode material can enable much longer life. Our laboratory experiments have shown that our cathode can easily cycle over 50,000 times without degradation in supercapacitors, and we believe that it can be very effective in batteries as well.

By enabling higher charge-discharge cycles, we can extend the life of lithium-ion batteries and further reduce the total cost of ownership. In certain applications such as off-grid solar energy storage where the batteries are fully charged and discharged daily, it is not cost-effective to use current lithium-ion batteries due to short replacement life.
The only thing I don't see mentioned on the website is efficiency. Since current intercalation chemistries achieves very nearly unity efficiency, it is hard to imagine a redox-based approach achieving similar performance. OTOH, I'm not sure how they could hope to achieve charge rates over 5C if efficiency is significantly lower. We'll see.
RegGuheert
2011 Leaf SL Demo vehicle
2011 miles at purchase. 10K miles on Apr 14, 2013. 20K miles (55.7Ah) on Aug 7, 2014, 3K miles (52.0Ah) on Dec 30, 2015, 40K miles (49.8Ah) on Feb 8, 2017.
Enphase Inverter Measured MTBF: M190, M215, M250, S280

Return to “Batteries & Charging”