A solid conductor including: a compound represented by Formula 1, a compound represented by Formula 2, or a combination thereof
Li.sub.1+x+y−zTa.sub.2−xM.sub.xP.sub.1−yQ.sub.yO.sub.8−zX.sub.z  Formula 1
wherein, in Formula 1, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z≤2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2,
Li.sub.1+x+y−zTa.sub.2−xM.sub.xP.sub.1−yQ.sub.yO.sub.8.Math.zLiX  Formula 2
wherein, in Formula 2, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2.

A solid conductor including: a compound represented by Formula 1, a compound represented by Formula 2, or a combination thereof
Li.sub.1+x+y−zTa.sub.2−xM.sub.xP.sub.1−yQ.sub.yO.sub.8−zX.sub.z  Formula 1
wherein, in Formula 1, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z≤2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2,
Li.sub.1+x+y−zTa.sub.2−xM.sub.xP.sub.1−yQ.sub.yO.sub.8.Math.zLiX  Formula 2
wherein, in Formula 2, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2.

The present invention relates to a method of preparing a lithium difluorophosphate crystal. More particularly, the present invention relates to a method of preparing a high-purity lithium difluorophosphate crystal at a high yield, and the high-purity lithium difluorophosphate crystal prepared by the method can be used for various purposes.

The disclosure discloses a synthesis method of hexafluorophosphate, belonging to the technical field of chemical synthesis. The synthesis method of hexafluorophosphate is characterized by comprising the following steps: reacting a phosphorus pentahalide inert solvent solution obtained by dissolving phosphorus pentahalide into an inert solvent with an alkali metal fluoride salt hydrogen fluoride solution obtained by dissolving an alkali metal halide salt into anhydrous hydrogen fluoride in a reactor in a ratio to obtain a mixture consisting of hexafluorophosphate, hydrogen fluoride, the inert solvent and hydrogen halide, performing gas-liquid separation to remove a hydrogen halide gas, then heating and evaporating to recover hydrogen fluoride, finally performing solid-liquid separation to recover the inert solvent, and then drying the solid to obtain hexafluorophosphate. The synthesis method of the disclosure has the advantages of simple operation, good safety, high reaction yield, excellent product quality and the like, and can achieve continuous production.

The disclosure discloses a synthesis method of hexafluorophosphate, belonging to the technical field of chemical synthesis. The synthesis method of hexafluorophosphate is characterized by comprising the following steps: reacting a phosphorus pentahalide inert solvent solution obtained by dissolving phosphorus pentahalide into an inert solvent with an alkali metal fluoride salt hydrogen fluoride solution obtained by dissolving an alkali metal halide salt into anhydrous hydrogen fluoride in a reactor in a ratio to obtain a mixture consisting of hexafluorophosphate, hydrogen fluoride, the inert solvent and hydrogen halide, performing gas-liquid separation to remove a hydrogen halide gas, then heating and evaporating to recover hydrogen fluoride, finally performing solid-liquid separation to recover the inert solvent, and then drying the solid to obtain hexafluorophosphate. The synthesis method of the disclosure has the advantages of simple operation, good safety, high reaction yield, excellent product quality and the like, and can achieve continuous production.

The invention relates to an NVPF-based composition and the use thereof in the field of batteries as an electrochemically active material. The invention also relates to a conductive composition comprising said composition as well as to a method for obtaining said composition.

The invention relates to an NVPF-based composition and the use thereof in the field of batteries as an electrochemically active material. The invention also relates to a conductive composition comprising said composition as well as to a method for obtaining said composition.

A solid conductor including: a compound represented by Formula 1, a compound represented by Formula 2, or a combination thereof

Li.sub.1+x+y-zTa.sub.2-xM.sub.xP.sub.1-yQ.sub.yO.sub.8-zX.sub.z  Formula 1

wherein, in Formula 1, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z≤2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2,

Li.sub.1+x+y-zTa.sub.2-xM.sub.xP.sub.1-yQ.sub.yO.sub.8.Math.zLiX  Formula 2

wherein, in Formula 2, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z≤2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2.

A solid conductor including: a compound represented by Formula 1, a compound represented by Formula 2, or a combination thereof

Li.sub.1+x+y-zTa.sub.2-xM.sub.xP.sub.1-yQ.sub.yO.sub.8-zX.sub.z  Formula 1

wherein, in Formula 1, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z≤2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2,

Li.sub.1+x+y-zTa.sub.2-xM.sub.xP.sub.1-yQ.sub.yO.sub.8.Math.zLiX  Formula 2

wherein, in Formula 2, M is an element having an oxidation number of +4, Q is an element having an oxidation number of +4, X is a halogen, a pseudohalogen, or a combination thereof, and 0≤x≤2, 0≤y<1, and 0≤z≤2, except that cases i) x and y and z are simultaneously 0, ii) M is Hf, X is F, x is 1, y is 0, and z is 1, iii) M is Hf, X is Cl, x is 2, y is 0, and z is 2, and iv) M is Hf, X is F, x is 2, y is 0, and z is 2.

In a phosphor according to an aspect, an emission site has a perovskite crystal structure expressed by ABX.sub.3, in which A and B are each a cation and X is an anion, and an emission element is located at a B site serving as a body center of the perovskite crystal structure.