[MSA-talk] REE...

Michael Jercinovic mjj at geo.umass.edu
Sun Nov 26 10:45:17 EST 2017

The NiMH (Ni metal hydride) rechargeable batteries used in hybrid 
vehicles is usually Ni-La hydride. Other LREEs can be used as well.  I 
read somewhere that about 10 lbs of La is used in each battery of a 
Prius.  There is an older Mining.com article that claims that each Prius 
engine uses 33 lbs. of lanthanum (batteries) and 2 lbs. neodymium 
(magnets).  So Toyota has invested heavily in Matamec Explorations to 
try to source REEs in North America.

Mike J.

On 11/25/2017 11:11 AM, Alexandra Navrotsky wrote:
> Many designs of  batteries and fuel cells involve  small amounts of  
> RE in secondary components
> *From:*msa-talk-bounces at minlists.org 
> [mailto:msa-talk-bounces at minlists.org] *On Behalf Of *Tom Mitchell
> *Sent:* Friday, November 24, 2017 3:22 PM
> *To:* Hovis, Guy L
> *Cc:* MSA public List serve
> *Subject:* Re: [MSA-talk] REE...
> On Thu, Nov 23, 2017 at 4:45 PM, Hovis, Guy L <hovisguy at lafayette.edu 
> <mailto:hovisguy at lafayette.edu>> wrote:
> I've had the request below from a colleague. Any help would be 
> appreciated.
> "Do you know about the mining of REE that are used in batteries? 
> Specifically I’m interested in those used in hybrid and/or plug in 
> hybrid vehicles? I am trying to learn more about the environmental 
> impact of these different approaches to transportation."
> There are perhaps two REE issues.  The important one is RE magnets in 
> the drive train.
> i.e. the Rare Earth magnets produced from Neodymium and Praseodymium
> The batteries that are important involve lithium which is not a REE.
> Some lithium batteries are using nickel and cobalt with their own issues.
> Once mined and formed into magnets REE recovery is quite easy because 
> of the extreme
> magnetic properties which makes recovery a lot easier than some stuff.
> REE mining seems to have radioactive element by product. The issue 
> with radioactive
> elements is the astounding sensitivity and detectability at a distance 
> of radioactive elements
> natural and man made.
> https://minerals.cr.usgs.gov/projects/Mountain_Pass_carbonatite/index.html
> How sensitive...
> https://www.ncbi.nlm.nih.gov/pubmed/2749221
> -- 
>   T o m    M i t c h e l l
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Michael J. Jercinovic
Department of Geosciences
University of Massachusetts
611 North Pleasant Street
Amherst, MA 01003

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