Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1980-07-28
1981-11-10
Gantz, Delbert E.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429213, 429218, 429199, 429201, 423508, 432561R, 252439, H01M 614, H01M 460, H01M 458, H01M 604
Patent
active
042998921
ABSTRACT:
Dichalcogenides of Group IVb, Vb, molybdenum and tungsten of two new forms have been discovered. The two new forms are the amorphous and layered-sheet configurations. In particular, the dichalcogenides of Group IVb, Ib, molybdenum and tungsten, i.e. Z(MX.sub.2).sub.n wherein M is the metal and X is the chalcogen, n is at least about 20,000 and Z is the number of such (MX.sub.2).sub.n sheets ranging from 1-10, can be described as possessing a "rag-like" structure representing a system consisting of single or several stacked but randomly folded and disordered layers or sheets having dimensions (as determined by TEM) corresponding to about 6.2 to 62 A in thickness, about 500 A minimum length by about 500 A minimum width. Broadly the rag-like (MX.sub.2).sub.n can be likened to a stack of polymer sheets wherein each sheet is one atom thick. These sheets of (MX.sub.2).sub.n are prepared by the controlled heating (in a flowing stream of H.sub.2 /H.sub.2 S) of amorphous MX.sub.2 obtained by the monaqueous low temperature precipitation of MX.sub.2 from mixtures of the metal salt and sources of sulfur, selenium or tellurium.
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Chianelli Russell R.
Dines Martin B.
Allocca Joseph J.
Exxon Research & Engineering Co.
Gantz Delbert E.
Wright William G.
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