Abstract: A solid-state ion conductor including a compound of Formula 1: Li1+(4?a)yAayM1?yXO5??Formula 1 wherein, in Formula 1, A is an element of Groups 1 to 3 or 11 to 13, or a combination thereof, wherein an oxidation state a of A is 1?a?3, M is an element having an oxidation state of +4 of Groups 4 or 14, or a combination thereof, X is an element having an oxidation state of +5 of Groups 5, 15, 17, or a combination thereof, and 0<y?1.

Abstract: A solid-state ion conductor includes a compound of Formula (I): Li4+(b?a)y+c?+(a??)xM13+x+yM23?yM?xO12X1cX21?c??Formula (I) wherein, M1 is a cationic element having an oxidation state of +2 or +3; M2 is a cationic element having an oxidation state of +4 or +5; M? is a cationic element having an oxidation state of ?, wherein ? is less than b; X1 is a cluster anion having an oxidation state of (?1-?), wherein ? is 0 or 1; X2 is a halogen; 0<c?1; 0?x?1; and 0?y?2.

Abstract: Embodiments related to cation-disordered lithium metal oxide compounds, their methods of manufacture, and use are described. In one embodiment, a cation-disordered lithium metal oxide includes LiaMbM?cO2 with a greater than 1. M includes at least one redox-active species with a first oxidation state n and an oxidation state n? greater than n, and M is chosen such that a lithium-M oxide having a formula LiMO2 forms a cation-disordered rocksalt structure. M? includes at least one charge-compensating species that has an oxidation state y that is greater than n.

Abstract: A lithium metal oxide suitable for use as a cathode material in a rechargeable battery having a general formula of: LixMzM?zOuFy, where x is 1.80<x<2.20, y=1, and more specifically 1.90<x<2.10, with 1.80<u<2.20. Preferably, 1.90<u<2.10, and 0.80<y<1.20, or more specifically, 0.90<y<1.10. The lithium metal oxide has a cation-disordered rocksalt structure, wherein M is a transition metal selected from a first group consisting of Ni, Mn, Co, Fe, and combinations thereof. M? is a transition metal selected from a second group consisting of Ti, Zr, Nb, Mo, Sn, Hf, Te, Sb, and combinations thereof. M has a first oxidation state q and M? has a second oxidation state q?, with (q/z)+(q?/z?)=+3, preferably +2.7?q/z)+(q?/z?)?+3.3.

Abstract: A class of compositions in the Li—Mn—O—F chemical space for Li-ion cathode materials. The compositions are cobalt-free, high-capacity Li-ion battery cathode materials synthesized with cation-disordered rocksalt (DRX) oxide or oxyfluorides, with the general formula LixMn2-xO2-yFy (1.1?x?1.3333; 0?y?0.6667). The compositions are characterized by: (i) high capacities (e.g., >240 mAh/g); (ii) high energy densities (e.g., >750 Wh/kg between 1.5-4.8V); (iii) favorable cyclability; and (iv) low cost.

Abstract: A solid-state ion conductor includes a compound of Formula (I): Li4+xB7O12+0.5xX1aX21?a ??Formula (I) wherein, in Formula (I), 0?x?1; X1 is a pseudohalogen; X2 is a halogen; and 0<a?1.

Abstract: A solid-state ion conductor includes a compound of the formula NaxM12?(y+z)M2yM3z(AO4)3 wherein M1, M2, and M3 are each independently Hf, Mg, Sc, In, Y, Ca, or Zr; A is P, Si, S, or a combination thereof; 3?x?3.5; 0.5?y?1; and 0?z?0.5. The solid-state ion conductor can be useful in various components of an electrochemical cell.

Abstract: A solid-state ion conductor includes a compound of Formula 1: Li(6-a)x+2y-b*z-6A1?xMaxOyXbz??Formula 1 wherein, in Formula 1, A is an element having an oxidation state of +6, M is an element having an oxidation state of a, wherein a is +2, +3, +4, +5, or a combination thereof, X is an element having an oxidation state of b, wherein b is ?1, ?3, or a combination thereof, and 2<[(6?a)x+2y?b*z?6]?6.5, 0?x?1, y>0, and z?0.

Abstract: A solid-state ion conductor includes a compound of Formula 1: Li6+(5?a)x?b*y?z(c+2)wA1?x(M1)ax(M2)byO5?z?wX1+zQcw??Formula 1 wherein, in Formula 1, A is an element having an oxidation state of +5, M1 is an element having an oxidation state of a, wherein a is +2, +3, +4, +6, +7, or a combination thereof, M2 is an element having an oxidation state of b, wherein b is +1, +2, or a combination thereof, X is an element having an oxidation state of ?1, Q is an element having an oxidation state of c, wherein c is less than ?2, and wherein ?2?(5?a)x?b*y?z?(c+2)w?2, 0?x?0.5, 0?y?0.5, ?1?z?1, 0?w?0.5.

Abstract: A class of compositions that are inclusive of a lithium metal oxide or oxyfluoride compound having a general formula: LiTM[n]OF where TM[n] represents a number of transition metal species inclusive of transitional metal species differentiated by charge or d0 electron shell conformation, with [n] being at least 4 of said transitional metal species, and wherein said lithium metal oxide or oxyfluoride has a cation-disordered rocksalt (DRX) structure and a mitigated SRO via a high entropy DRX design strategy. Also featured is a method of synthesizing the high entropy DRX lithium metal oxide or oxyfluoride compounds, as well as usage of the same in Li-ion batteries, with particular utility in cathodes of such Li-ion batteries.

Abstract: Embodiments related to cation-disordered lithium metal oxide compounds, their methods of manufacture, and use are described. In one embodiment, a cation-disordered lithium metal oxide includes LiaMbM?cO2 with a greater than 1. M includes at least one redox-active species with a first oxidation state n and an oxidation state n? greater than n, and M is chosen such that a lithium-M oxide having a formula LiMO2 forms a cation-disordered rocksalt structure. M? includes at least one charge-compensating species that has an oxidation state y that is greater than n.

Abstract: A solid-state ion conductor includes a compound of Formula (I): Li4+(b?a)y+c?+(a??)xM13+x+yM23?yM?xO12X1cX21?c??Formula (I) wherein, M1 is a cationic element having an oxidation state of +2 or +3; M2 is a cationic element having an oxidation state of +4 or +5; M? is a cationic element having an oxidation state of ?, wherein ? is less than b; X1 is a cluster anion having an oxidation state of (?1-?), wherein ? is 0 or 1; X2 is a halogen; 0<c?1; 0?x?1; and 0?y?2.

Abstract: A solid-state ion conductor includes a compound of Formula (I): Li4+xB7O12+0.5xX1aX21?a ??Formula (I) wherein, in Formula (I), 0?x?1; X1 is a pseudohalogen; X2 is a halogen; and 0<a?1.

Abstract: A solid-state ion conductor includes a compound of Formula 1: Li(6?a)x+2y?b*z?6A1?xMaxOyXbz ??Formula 1 wherein, in Formula 1, A is an element having an oxidation state of +6, M is an element having an oxidation state of a, wherein a is +2, +3, +4, +5, or a combination thereof, X is an element having an oxidation state of b, wherein b is ?1, ?3, or a combination thereof, and 2<[(6?a)x+2y?b*z?6]?6.5,0 ?x?1, y>0, and z?0.

Abstract: A solid-state ion conductor includes a compound of Formula 1: Li6+(5?a)x?b*y?z?(c+2)wA1?x(M1)ax(M2)byO5?z?wXl+zQcw ??Formula 1 wherein, in Formula 1, A is an element having an oxidation state of +5, M1 is an element having an oxidation state of a, wherein a is +2, +3, +4, +6, +7, or a combination thereof, M2 is an element having an oxidation state of b, wherein b is +1, +2, or a combination thereof, X is an element having an oxidation state of ?1, Q is an element having an oxidation state of c, wherein c is less than ?2, and wherein ?2?(5?a)x?b*y?z?(c+2)w?2, 0?x?0.5, 0?y?0.5, ?1?z?1, 0?0.

Abstract: Provided is a lithium-conductive solid-state electrolyte material that comprises a sulfide compound of a composition that does not deviate substantially from a formula of Li9S3N. The compound's conductivity is greater than about 1×10?7 S/cm at about 25° C. and is in contact with a negative electroactive material. Also provided is an electrochemical cell that includes an anode layer, a cathode layer, and the electrolyte layer between the anode and cathode layers. In an example, the material's activation energy can be no greater than about 0.52 eV at about 25° C.

Abstract: A solid-state ion conductor including a compound of Formula 1: Li1+(4-a)yAayM1-yXO5 ??Formula 1 wherein, in Formula 1, A is an element of Groups 1 to 3 or 11 to 13, or a combination thereof, wherein an oxidation state a of A is 1?a?3, M is an element having an oxidation state of +4 of Groups 4 or 14, or a combination thereof, X is an element having an oxidation state of +5 of Groups 5, 15, 17, or a combination thereof, and 0<y?1.

Abstract: A solid-state ion conductor including a compound of Formula 1: Li4?x?a?(b+2)yAxMa(SeO3)2?yXby??Formula 1 wherein, in Formula 1, A is an element of Groups 1 or 11, or a combination thereof, M is an element of Groups 2 to 17, or a combination thereof, wherein an oxidation state a of M is 2?a?7, X is a cluster anion having an oxidation state of b, wherein ?3?b??1, 0<(4?x?a?(b+2)y)?2, x?0, and 0?y?2.

Abstract: A solid-state ion conductor including a compound of Formula 1: Li(3+2y1)B(P1-y1A1y1O4)2 ??Formula 1 wherein, in Formula 1, A1 is an element of Groups 4, 14, or a combination thereof, and has an oxidation state of +4, and 0<y1<1.

Abstract: A sodium-ion battery includes an electrode having a crystalline active material represented by formula units that intercalate and/or deintercalate more than two charge carriers during operation of the battery. In some instances, the active material that experiences a volume change of less than 6.0%, 4.0%, or even 2.0% when the active material intercalates more than two charge carriers during operation of the battery.