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Ternary alkali-metal and transition metal or metalloid acetylides as alkali-metal intercalation electrodes for batteries

United States Patent

February 10, 2015
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Novel intercalation electrode materials including ternary acetylides of chemical formula: A.sub.nMC.sub.2 where A is alkali or alkaline-earth element; M is transition metal or metalloid element; C.sub.2 is reference to the acetylide ion; n is an integer that is 0, 1, 2, 3 or 4 when A is alkali element and 0, 1, or 2 when A is alkaline-earth element. The alkali elements are Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr). The alkaline-earth elements are Berilium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra). M is a transition metal that is any element in groups 3 through 12 inclusive on the Periodic Table of Elements (elements 21 (Sc) to element 30 (Zn)). In another exemplary embodiment, M is a metalloid element.
Nemeth; Karoly (Darien, HU), Srajer; George (Oak Park, IL), Harkay; Katherine C. (Lemont, IL), Terdik; Joseph Z. (Chicago, IL)
U.S. Department of Energy (Washington, DC)
13/ 688,631
November 29, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The United States Government has rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the U.S. Department of Energy (DOE) and University of Chicago, Argonne LLC.