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Conductive lithium storage electrode

United States Patent

October 7, 2014
View the Complete Patent at the US Patent & Trademark Office
A compound comprising a composition A.sub.x(M'.sub.1-aM''.sub.a).sub.y(XD.sub.4).sub.z, A.sub.x(M'.sub.1-aM''.sub.a).sub.y(DXD.sub.4).sub.z, or A.sub.x(M'.sub.1-aM''.sub.a).sub.y(X.sub.2D.sub.7).sub.z, (A.sub.1-aM''.sub.a).sub.xM'.sub.y(XD.sub.4).sub.z, (A.sub.1-aM''.sub.a).sub.xM'.sub.y(DXD.sub.4).sub.z, or (A.sub.1-aM''.sub.a).sub.xM'.sub.y(X.sub.2D.sub.7).sub.z. In the compound, A is at least one of an alkali metal and hydrogen, M' is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M'' any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001<a.ltoreq.0.1, and x, y, and z are greater than zero. The compound can be used in an electrochemical device including electrodes and storage batteries.
Chiang; Yet-Ming (Framingham, MA), Chung; Sung-Yoon (Incheon, KR), Bloking; Jason T. (Mountain View, CA), Andersson; Anna M. (Vasteras, SE)
Massachusetts Institute of Technology (Cambridge, MA)
13/ 404,735
February 24, 2012
GOVERNMENTAL SUPPORT This invention was made with government support under Grant Number DE-FG02-87ER45307 awarded by the Department of Energy. The government has certain rights in the invention.