Mesostructural metal oxide materials useful as an intercalation cathode or anode
AssigneeResearch Corporation Technologies, Inc.
InventorsRoger E. Frech, Xulong Zhang
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Abstract
The present invention provides mesostructural metal oxide materials that can be employed in lithium ion rechargeable batteries as intercalation electrodes. The mesostructural metal oxide materials of the present invention maintain their structural integrity during intercalation, are reversible and exhibit increased electrochemical capacity. The use of such mesostructural metal oxides in rechargeable batteries is also described herein.
Claims44
An electrode useful in Li ion rechargeable batteries comprising:
- (a) a host material, wherein said host material is a mesostructural metal oxide having the formula
- Li.sub.n Q.sub.x M.sub.y O.sub.z
- wherein n is from about 0.1 to about 1.1;
- x is from about 0.5 to about 1.0;
- y is 0.05 to about 0.5;
- z is about 2;
- Q is Si, Al, P or mixtures thereof;
- and M is a transition or a non-transition metal selected from Group VB, VIIB, VIII and IVA of the Periodic Table of Elements;
- (b) an inert organic binder;
- and
- (c) a conducting agent.
An cathode useful in Li ion rechargeable batteries comprising:
- (a) a cathode host material, wherein said cathode host material is a mesostructural metal oxide having the formula
- Li.sub.n Q.sub.x M.sub.y O.sub.z
- wherein n is from about 0.1 to about 1.1;
- x is from about 0.5 to about 1.0;
- y is 0.05 to about 0.5;
- z is about 2;
- Q is Si, Al, P or mixtures thereof;
- and M is a transition or a non-transition metal selected from Group VB, VIIB, and VIII of the Periodic Table of Elements;
- (b) an inert organic binder;
- and
- (c) a conducting agent.
An anode useful in Li ion rechargeable batteries comprising:
- (a) an anode host material, wherein said anode host material is a mesostructural metal oxide having the formula
- Li.sub.n Q.sub.x M.sub.y O.sub.z
- wherein n is from about 0.1 to about 1.1;
- x is from about 0.5 to about 1.0;
- y is 0.05 to about 0.5;
- z is about 2;
- Q is Si, Al, P or mixtures thereof;
- and M is a non-transition metal selected from Group IVA of the Periodic Table of Elements or iron;
- (b) an inert organic binder;
- and
- (c) a conducting agent.
A Li rechargeable battery system comprising (a) an anode;
- (b) a cathode;
- and (c) an electrolyte having Li ion conductivity, wherein at least one of said anode or cathode is comprised of a mesostructural metal oxide having the formula
- Li.sub.n Q.sub.x M.sub.y O.sub.z
- wherein n is from about 0.1 to about 1.1;
- x is from about 0.5 to about 1.0;
- y is 0.05 to about 0.5;
- z is about 2;
- Q is Si, Al, P or mixtures thereof;
- and M is a transition or a non-transition metal selected from Group VB, VIIB, VIII and IVA of the Periodic Table of Elements.
Dependencies are inferred from the claim text.