The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1:

Li.sub.aPS.sub.bN.sub.cX.sub.d  [Formula 1]

wherein 6≤a≤7, 3≤b≤6, 0≤c≤1, 0≤d≤2, and

each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1:

Li.sub.aPS.sub.bN.sub.cX.sub.d  [Formula 1]

wherein 6≤a≤7, 3≤b≤6, 0≤c≤1, 0≤d≤2, and

each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1:

Li.sub.aPS.sub.bN.sub.cX.sub.d   [Formula 1] wherein 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1:

Li.sub.aPS.sub.bN.sub.cX.sub.d   [Formula 1] wherein 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

A solid electrolyte for an all-solid-state sodium battery, represented by formula: Na.sub.3−xSb.sub.1−xα.sub.xS.sub.4, wherein α is selected from elements that provide Na.sub.3−xSb.sub.1−xα.sub.xS.sub.4 exhibiting a higher ionic conductivity than Na.sub.3SbS.sub.4, and x is 0<x<1.

A chalcogen-containing compound of the following chemical formula which exhibits an excellent thermoelectric performance index (ZT) through an increase in power factor and a decrease in thermal conductivity, a method for preparing the same, and a thermoelectric element including the same: M.sub.yV.sub.1-ySn.sub.xSb.sub.2Te.sub.x+3, wherein V is vacancy, M is at least one alkali metal, x≥6, and 0<y≤0.4.

A novel sulfide solid electrolyte containing Li, P, S, and a halogen, which can be used as a solid electrolyte for a lithium secondary battery or the like, and is able to suppress the generation of a hydrogen sulfide gas even when exposed to moisture in the atmosphere. The sulfide solid electrolyte comprises a crystal phase or a compound having an argyrodite-type structure and containing Li, P, S, and a halogen; and a compound composed of Li, Cl, and Br and having a peak at each position of 2θ=29.1°±0.5° and 33.7°±0.5° in an X-ray diffraction pattern.

A novel sulfide solid electrolyte containing Li, P, S, and a halogen, which can be used as a solid electrolyte for a lithium secondary battery or the like, and is able to suppress the generation of a hydrogen sulfide gas even when exposed to moisture in the atmosphere. The sulfide solid electrolyte comprises a crystal phase or a compound having an argyrodite-type structure and containing Li, P, S, and a halogen; and a compound composed of Li, Cl, and Br and having a peak at each position of 2θ=29.1°±0.5° and 33.7°±0.5° in an X-ray diffraction pattern.

Disclosed are a pseudo-ternary thermoelectric material, a method of manufacturing the pseudo-ternary thermoelectric material, a thermoelectric element, and a thermoelectric module. The pseudo-ternary thermoelectric material includes bismuth (Bi), antimony (Sb), tellurium (Te), and selenium (Se), and a composition ratio thereof is Bi.sub.xSb.sub.2-xTe.sub.3 in which 0.3≤x≤0.6 or (Bi.sub.2Te.sub.3).sub.1-x-y(Sb.sub.2Te.sub.3).sub.x(Sb.sub.2Se.sub.3).sub.y in which 0<x<1 and 0.001≤y≤0.05.

Disclosed are a pseudo-ternary thermoelectric material, a method of manufacturing the pseudo-ternary thermoelectric material, a thermoelectric element, and a thermoelectric module. The pseudo-ternary thermoelectric material includes bismuth (Bi), antimony (Sb), tellurium (Te), and selenium (Se), and a composition ratio thereof is Bi.sub.xSb.sub.2-xTe.sub.3 in which 0.3≤x≤0.6 or (Bi.sub.2Te.sub.3).sub.1-x-y(Sb.sub.2Te.sub.3).sub.x(Sb.sub.2Se.sub.3).sub.y in which 0<x<1 and 0.001≤y≤0.05.