Lithium-ion solid state conductor including lithium hafnium metal phosphate, electrode and battery including the conductor, methods of manufacture thereof
A compound of Formula 1 Li 1+(4−a)α Hf 2−α M a α (PO 4−δ ) 3 (1) is disclosed, wherein M is at least one cationic element having a valence of a, wherein 0<α≤⅔, 1≤a≤4, and 0≤δ≤0.1. Also described are an electrolyte composition, a separator, a protected positive electrode, a protected negative electrode, and a lithium battery, each including the compound of Formula 1.
1 . A compound of Formula 1
Li 1+(4−a)α Hf 2−α M a α (PO 4−δ ) 3 (1)
wherein M is a cationic element having a valence of a, and is Li + , Na + , K + , Cu + , Ag + , or a combination thereof, and
wherein 0<α<⅔, and 0≤δ≤0.1 and wherein in Formula 1, a=1.
2 . An electrolyte composition, the electrolyte composition comprising the compound of claim 1 .
3 . A separator, comprising:
a microporous film, and
the compound of claim 1 on the microporous film.
4 . A lithium battery, comprising:
a negative electrode;
an electrolyte; and
a positive electrode,
wherein the electrolyte is between the negative electrode and the positive electrode, and
wherein the electrolyte comprises the compound of claim 1 .
5 . A lithium battery, comprising:
a negative electrode;
a separator comprising a microporous film; and
a positive electrode,
wherein an electrolyte is between the negative electrode and the positive electrode, and
wherein the separator comprises the compound of claim 1 .
6 . A method of manufacturing the compound of claim 1 , the method comprising:
contacting a compound comprising lithium, a compound comprising hafnium, and a compound comprising element M to form a mixture; and
heat-treating the mixture to manufacture the compound of Formula 1.
7 . A method of manufacturing a lithium battery, the method comprising:
providing a negative electrode;
providing a positive electrode; and
disposing a solid electrolyte between the positive electrode and the negative electrode,
wherein at least one of the negative electrode, the positive electrode, and the solid electrolyte comprises the compound of claim 1 .
8 . A protected negative electrode, comprising:
a negative active material; and
the compound of claim 1 on a surface of the negative active material.
9 . A lithium battery, comprising:
a negative electrode;
an electrolyte; and
a positive electrode,
wherein the electrolyte is between the negative electrode and the positive electrode, and
wherein the negative electrode comprises the protected negative electrode of claim 8 .
10 . A protected positive active material comprising:
a positive active material, wherein the positive active material comprises a lithium transition metal oxide, a lithium transition metal phosphate, a sulfide, or a combination thereof, and
the compound of claim 1 on a surface of the positive active material.
11 . A lithium battery, comprising:
a negative electrode;
an electrolyte; and
a positive electrode,
wherein the electrolyte is between the negative electrode and the positive electrode, and
wherein the positive electrode comprises the protected positive active material of claim 10 .