Vitreous phosphorus oxide-sulfide solid lithium electrolyte

Claim 2

A phosphorus oxide-sulfide solid state electrolyte of the composition: P.sub.4 O.sub.a S.sub.b, cLi.sub.2 S, dLi.sub.2 O, eX where: X is selected from the group consisting of LiBr, LiCl, LiF, LiI, Li 2 CO 3 , Li 2 SO 4 , Li 2 SiO 3 and Li 4 SiO 4 ; a is equal to (10-b) with b being greater than 0 and less than 10 with the proviso however that when b is 6 a can be 3; c and d are from 0 to about 4 with the proviso that when c and d are both greater than 0 then d=4-c, and when c or d is 0 then d or c, respectively, is greater than 0; and e is from 0 to about 7.

Claim 3

The phosphorus oxide-sulfide solid state electrolyte of claim 1 wherein said P 4 O a S b is selected from the group consisting of P 4 O 5 S 5 , P 4 O 4 S 6 , P 4 O 3 S 7 , P 4 O 2 S 8 , and P 4 O 1 S 9 .

Claim 4

The phosphorus oxide-sulfide solid state electrolyte of claim 1 wherein c and d are from about 1 to about 4 and e is from about 0 to about 5.

Claim 5

The phosphorus oxide-sulfide solid state electrolyte of claim 1 wherein said solid state electrolyte is 5LiI.4Li 2 S.P 4 OS 9 .

Claim 6

The phosphorus oxide-sulfide solid state electrolyte of claim 1 wherein said solid state electrolyte is 2LiI.2Li 2 S.P 2 O 2 S 3 .

Claim 7

The phosphorus oxide-sulfide solid state electrolyte of claim 1 wherein said solid state electrolyte is 2.5LiI.2Li 2 S.P 2 O 2 S 3 .

Claim 8

The phosphorus oxide-sulfide solid state electrolyte of claim 1 wherein said solid state electrolyte is 2LiBr.2Li 2 S.P 2 O 3 S 2 .

Claim 9

A solid state cell comprising an anode, a cathode and a phosphorus oxide-sulfide solid state electrolyte of the composition: P.sub.4 O.sub.a S.sub.b, cLi.sub.2 S, dLi.sub.2 O, eX where: X is selected from the group consisting of LiBr, LiCl, LiF, LiI, Li 2 CO 3 , Li 2 SO 4 , Li 2 SiO 3 and Li 4 SiO 4 ; a is equal to (10-b) with b being greater than 0 and less than 10 with the proviso however that when b is 6 a can be 3; c and d are from 0 to about 4 with the proviso that when c and d are both greater than 0 then d=4-c, and when c or d is 0 then d or c, respectively, is greater than 0; and e is from 0 to about 7.

Claim 10

A solid state cell comprising an anode, a cathode and a phosphorus oxide-sulfide solid state electrolyte of the composition: P.sub.4 O.sub.a S.sub.b, cLi.sub.2 S, dLi.sub.2 O, eX where: X is selected from the group consisting of LiBr, LiCl, LiF, LiI, Li 2 CO 3 , Li 2 SO 4 , Li 2 SiO 3 and Li 4 SiO 4 ; a is equal to (10-b) with b being greater than 0 and less than 10 with the proviso however that when b is 6 a can be 3; c and d are from 0 to about 4 with the proviso that when c and d are both greater than 0 then d=4-c, and when c or d is 0 then d or c, respectively, is greater than 0; and e is from 0 to about 7.

Claim 11

The solid state cell of claim 8 wherein said P 4 O a S b of said phosphorus oxide-sulfide solid state electrolyte is selected from the group consisting of P 4 O 5 S 5 , P 4 O 4 S 6 , P 4 O 3 S 7 , P 4 O 2 S 8 , and P 4 OS 9 .

Claim 12

The solid state cell of claim 8 wherein said phosphorus oxide-sulfide solid state electrolyte has c and d values from about 1 to about 4 and an e value from about 0 to about 5.

Claim 13

The solid state cell of claim 8 wherein said phosphorus oxide-sulfide solid state electrolyte is 5LiI.4Li 2 S.P 4 OS 9 .

Claim 14

The solid state cell of claim 8 wherein said phosphorus oxide-sulfide solid state electrolyte is 2LiI.2Li 2 S.P 2 O 2 S 3 .

Claim 15

The solid state cell of claim 8 wherein said phosphorus oxide-sulfide solid state electrolyte is 2.5LiI.2Li 2 S.P 2 O 2 S 3 .

Claim 16

The solid state cell of claim 8 wherein said phosphorus oxide-sulfide solid state electrolyte is 2LiBr.2Li 2 S.P 2 O 3 S 2 .

Claim 17

The solid state cell of claim 8 wherein the anode is selected from the group consisting of lithium, lithium alloys, sodium, potassium, rubidium, and silver.

Claim 18

The solid state cell of claim 8 wherein the cathode is selected from the group consisting of TiS 2 , MoS 3 , PVP+I 2 , PVP+I 2 +TiS 2 , TiS 2 +MoS 3 , FeS 2 , Sb 2 S 3 , and MnO 2 .

Claim 19

The solid state cell of claim 15 or 16 wherein the anode is lithium, and the cathode is TiS 2 .

Claim 20

The solid state cell of claim 15 or 16 wherein the anode is lithium and the cathode is TiS 2 +MoS 3 .