Annealed garnet electrolyte separators
First Claim
1. An electrolyte separator,having top and bottom surfaces and a bulk therebetween, wherein the bulk has a thickness;
- wherein the top surface or bottom surface length or width is greater than the thickness of the bulk by a factor of ten (10) or more, and the thickness of the bulk is from about 10 nm to about 100 μ
m;
wherein the bulk is characterized by the chemical formula
LiALaBM′
CM″
DZrEOF,
LiALaBM′
CM″
DTaEOF, or
LiALaBM′
CM″
DNbEOF,wherein 4<
A<
8.5, 1.5<
B<
4, 0≤
C≤
2, 0≤
D≤
2;
0≤
E<
2, 10<
F<
13, and M′ and
M″
are each, independently in each instance selected from Al, Mo, W, Nb, Sb, Ca, Ba, Sr, Ce, Hf, Rb, and Ta;
orwherein the bulk is characterized by the chemical formula LiaLabZrcAldMe″
eOf, wherein 5<
a<
7.7;
2<
b<
4;
0<
c≤
2.5;
0≤
d<
2;
0≤
e<
2, 10<
f<
13 and Me″
is a metal selected from Nb, Ta, V, W, Mo, and Sb;
wherein either the top surface or bottom surface is characterized as having a layer thereupon, greater than 1 nm and less than 1 μ
m, comprising a lithium carbonate, lithium hydroxide, lithium oxide, lithium peroxide, a hydrate thereof, an oxide thereof, or a combination thereof.
3 Assignments
0 Petitions
Accused Products
Abstract
Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li+ ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.
-
Citations
47 Claims
-
1. An electrolyte separator,
having top and bottom surfaces and a bulk therebetween, wherein the bulk has a thickness; -
wherein the top surface or bottom surface length or width is greater than the thickness of the bulk by a factor of ten (10) or more, and the thickness of the bulk is from about 10 nm to about 100 μ
m;wherein the bulk is characterized by the chemical formula
LiALaBM′
CM″
DZrEOF,
LiALaBM′
CM″
DTaEOF, or
LiALaBM′
CM″
DNbEOF,wherein 4<
A<
8.5, 1.5<
B<
4, 0≤
C≤
2, 0≤
D≤
2;
0≤
E<
2, 10<
F<
13, and M′ and
M″
are each, independently in each instance selected from Al, Mo, W, Nb, Sb, Ca, Ba, Sr, Ce, Hf, Rb, and Ta;
orwherein the bulk is characterized by the chemical formula LiaLabZrcAldMe″
eOf, wherein 5<
a<
7.7;
2<
b<
4;
0<
c≤
2.5;
0≤
d<
2;
0≤
e<
2, 10<
f<
13 and Me″
is a metal selected from Nb, Ta, V, W, Mo, and Sb;wherein either the top surface or bottom surface is characterized as having a layer thereupon, greater than 1 nm and less than 1 μ
m, comprising a lithium carbonate, lithium hydroxide, lithium oxide, lithium peroxide, a hydrate thereof, an oxide thereof, or a combination thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification