SULFIDE SOLID ELECTROLYTE
|Posted date||Apr 17, 2018|
|International application number||2017JP009824|
|International publication number||WO 2017155119|
|Date of international filing||Mar 10, 2017|
|Date of international publication||Sep 14, 2017|
|Title||SULFIDE SOLID ELECTROLYTE|
|Abstract||Provided is a sulfide solid electrolyte material that does not contain Ge, and is provided with both excellent electrochemical stability and high lithium ion conductivity. The sulfide solid electrolyte contains a sulfide-based solid electrolyte represented by compositional formula Li4–4z–x[SnySi1–y]1+z–xPxS4, where 0.5 ≤ x ≤ 0.6, y = 0.2, and 0 ≥ z ≥ –0.2, and has a peak at a position 2θ = 29.58°±0.50° with X-ray diffraction measurement using CuKα rays, and does not have a peak at a position 2θ = 27.33°±0.50° with X-ray diffraction measurement using CuKα rays, or, in a case having a peak at the abovementioned position 2θ = 27.33°±0.50°, when the diffracted intensity of the peak of the abovementioned 2θ = 29.58°±0.50° is IA, and the diffracted intensity of the peak of the abovementioned 2θ = 27.33°±0.50° is IB, the value of IB/IA is less than 0.50.|
|Outline of related art and contending technology||
The personal computer in recent years, such as a mobile phone or a video camera and related equipment information with the rapid popularization of communication device or the like, the development of batteries are used as power sources thereof has been regarded as important. In addition, may also be incorporated in the automotive industry, for a hybrid vehicle or electric vehicle high output and high capacity battery has been developed. Currently, among a variety of batteries, from the viewpoint of high energy density, a lithium battery has gained attention.
Is currently commercially available lithium ion battery, a flammable organic solvent for electrolytic solution is used, the safety device to suppress the temperature rise during a short circuit of the structure for the mount and to prevent a short circuit, the improvement of the material surface is required. On the other hand, the electrolytic solution instead of the solid electrolyte layer, and the all-solid-state battery is the lithium ion battery, a flammable organic solvent in the battery is not used, the safety device can be simplified, the manufacturing cost and is considered to be excellent in productivity.
All solid state lithium battery used as the solid electrolyte material, a sulfide solid electrolyte material is known. For example, in Non-Patent Document 1, Li(4-x) Ge(1-x) Px S4 Li ion conductor having a composition of (a sulfide solid electrolyte material) is disclosed. In addition, in Patent Document 1, a particular X-ray diffraction measurement in a high proportion of the crystal phase having a peak of the LiGePS-based sulfide solid electrolyte material is disclosed. Further, in the non-patent document 2, the sulfide solid electrolyte material of the LiGePS system has been disclosed.
|Scope of claims||
|IPC(International Patent Classification)||
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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Contact Information for " SULFIDE SOLID ELECTROLYTE "
- Tokyo Institute of Technology Office of Research and Innovation
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