Comments for Battery Blog

Comment on Lithium Ion Cathode Materials by Randy

Randy — Thu, 20 May 2010 20:55:00 +0000

Ken, I think most battery companies make their own cathode materials in house.
The only company I know of off-hand devoted to cathode materials production exclusively is Phostech Lithium who has a mandate to manufacture iron phosphate materials on behalf of Hydro Quebec for sale to the general market, since HQ bought exclusive rights to a few key patents for this material from the University of Texas.

See http://www.phostechlithium.com/prf_historique_e.php

Comment on Lithium Ion Cathode Materials by ken eldib

ken eldib — Thu, 20 May 2010 20:08:54 +0000

Dear Sir,

Could you please advise, who are some of the companies that make Lithium ion cathode materials.

Comment on About by Randy

Randy — Sat, 03 Apr 2010 13:47:42 +0000

Hello Fernando,
I think graphite should be the Anode? Are you charging it backwards?
If it’s a lithium ion battery, the negative lead should be to the carbon and the positive lead to the aluminum “is it oxide?” cathode. Then charging is positive current flow into the aluminum oxide cathode. Looking at it the other way, electron flow into the carbon anode is charging.
Good luck,
Randy

Comment on About by Fernando Fonseca

Fernando Fonseca — Sat, 03 Apr 2010 10:13:49 +0000

Dear Sirs

I am a portuguese student master degree and do research in rechargeable batteries of aluminium.
I use graphite as the cathode. And I have some problems with the charging the battery, once the voltage does not keep constant after this charge, decreases.

I liked some suggestion yours.

Thanks.

Best regards
Fernando Fonseca

Comment on Cathode Reactions in Aqueous Electrolyte; NiCd, NiMH and Lead Acid Chemistries by Randy

Randy — Tue, 23 Feb 2010 11:33:16 +0000

NiMH are much less hazardous to men than lead acid or other heavy metal based chemistries. NiMH should be relatively non-toxic, much less than lead acid and nickle cadmium.

Lithium ion is quickly gaining in popularity because it has many advantages in terms of performance and cost but it also has some disadvantages regarding safety and performance for certain applications namely where low temperature or sub-zero Celsius charging operation is required, so NiMH or others may have a niche in this area over lithium at present.

Comment on Cathode Reactions in Aqueous Electrolyte; NiCd, NiMH and Lead Acid Chemistries by Baterije Trading

Baterije Trading — Mon, 22 Feb 2010 20:10:39 +0000

Do you know something about NiMH batteries… are they also hazardous for men like NiCd and will NiMH will be replaced by LiIon or LiPolymer?

Comment on How to double the MPG of an SUV running on gasoline by D

Wed, 02 Dec 2009 23:14:51 +0000

How about putting some links about plug in conversions on your blog. I’d be very interested to see what options are out there for Plug in Conversions of Highlander Hybrids and Lexus RX400 SUV’s

Comment on Lithium versus Lithium Ion – The difference is in the Anode by Randy

Randy — Tue, 17 Nov 2009 23:26:36 +0000

There are a lot of factors that go into the cost of lithium ion battery production such as input materials, processing, labour, capital costs, etc… New cathode materials for large format cells have moved away from using large amounts of cobalt which helps to reduce some of the material cost.

Comment on Lithium versus Lithium Ion – The difference is in the Anode by KronA

KronA — Tue, 17 Nov 2009 18:31:06 +0000

Very interesting. Do you have much information on the current proportional costs of the various types of lithium based cell? I saw a study from 1991 which showed (I think) 60% of the raw materials cost was cobalt. I presume a lot of the newer batteries do away with this to reduce costs?

Comment on How to double the MPG of an SUV running on gasoline by rirmGeofepype

rirmGeofepype — Sun, 01 Nov 2009 04:57:52 +0000

Other variant is possible also