-----Original Message-----
From: John Coviello
I'll have to read up on this company and technology. The claims of
capacity are so great, that a natural amount of skepticism is very
warranted. If they can produce such an aluminum battery, I would assume
that it would not be very expensive, since aluminum is rather cheap.
We'll see if anything comes of this.
<><><><><><>
As I look into the archives, I see Chris Zell originally posted on this
Al bettery some time ago.
US patent 6,482,548 describes a similar technology with almost as great
an energy density:
"EXAMPLE V
Yet another cell embodiment of the present invention was prepared,
along with a comparative single-cation Li.sup.+ cell, comprising
negative and separator members of the foregoing examples with a
positive electrode member comprising a MoS.sub.x active material
prepared by thermal decomposition of ammonium tetrathiomolybdate. The
cells were activated respectively with 1.0 M Li(CF.sub.3 SO.sub.3) and
0.5 M Al(CF.sub.3 SO.sub.3).sub.3 electrolyte solutions in EC:DMC and
tested through extended charge-discharge cycles at a rate of 7 ma/g.
The plots of data obtained in these tests depict initial discharge
capacity in FIG. 6 and long-term cycling characteristics of the cells
in FIG. 7. The extraordinary increase in initial discharge capacity
exhibited, at Al.sup.3+, by the cell of the present invention over
that, at Li.sup.+, of the prior art cell is clearly evident in FIG. 6.
The remarkable aspect of the performance of the present dual cation
cell is seen in FIG. 7 where the Al.sup.3+ cell maintains after
extensive cycling a 50% greater specific capacity calculated to be
about 525 mAh/g. "
It is assigned to Telcordia Technologies in Morristown NJ.
Terry
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