A main object of the present disclosure is to provide a sulfide solid electrolyte with high ion conductivity. In the present disclosure, the above object is achieved by providing a sulfide solid electrolyte comprising: a Li element, an M element (M is at least one kind of P, Ge, Si and Sn), and a S element, and the sulfide solid electrolyte has an argyrodite type crystal phase, in .sup.31P-MAS-NMR, the sulfide solid electrolyte has peak A at 82.1 ppm±0.5 ppm and peak B at 86.1 ppm±0.5 ppm, and when an area ratio of the peak A is regarded as S.sub.A, and an area ratio of the peak B is regarded as S.sub.B, a proportion of the S.sub.B to the S.sub.A, that is S.sub.B/S.sub.A, is 0.23 or less.

A functionalized fibrous hierarchical zeolite includes a framework comprising aluminum atoms, silicon atoms, and oxygen atoms, the framework further comprising a plurality of micropores and a plurality of mesopores. The functionalized fibrous hierarchical zeolite is functionalized with at least one terminal hydroxyl. Terminal organometallic functionalities are bonded to silicon atoms of the microporous framework, the terminal organometallic functionalities comprising a nickel atom.

A compound of the general formula: (i) wherein x has a value greater than 0.06 and equal to or less than 0.4. The compound is also formulated into a positive electrode for use in an electrochemical cell.

Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a zeolite may include a microporous framework comprising a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to bridging oxygen atoms. The organometallic moieties may include a zirconium atom. The zirconium atom may be bonded to a bridging oxygen atom, and the bridging oxygen atom may bridge the zirconium atom of the organometallic moiety and a silicon atom of the microporous framework.

Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to bridging oxygen atoms. The organometallic moieties may include a platinum atom. The platinum atom may be bonded to a bridging oxygen atom, and the bridging oxygen atom may bridge the platinum atom of the organometallic moiety and a silicon atom of the microporous framework.

Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework comprising a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to bridging oxygen atoms. The organometallic moieties may include a titanium atom. The titanium atom may be bonded to a bridging oxygen atom, and the bridging oxygen atom may bridge the titanium atom of the organometallic moiety and a silicon atom of the microporous framework.

Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to a nitrogen atom of a secondary amine functional group comprising a nitrogen atom and a hydrogen atom. The organometallic moieties may comprise a hafnium atom that is bonded to the nitrogen atom of the secondary amine functional group. The nitrogen atom of the secondary amine function group may bridge the hafnium atom of the organometallic moiety and a silicon atom of the microporous framework.

The invention is related to a layered double hydroxide electride which can be produced without high-temperature treatment, and a production method of which cost can be reduced. The layered double hydroxide electride contains electrons between layers and has an electron density of 2.0×10.sup.18 cm.sup.−3 or more. The method of producing the layered double hydroxide electride includes a step of mixing a starting layered double hydroxide with an electron exchanger for exchanging anions existing between layers of the starting layered double hydroxide for electrons to produce the layered double hydroxide electride.

A method is provided for manufacturing a nanoparticle material having an ionic conductivity as a battery material for Fluoride ion Batteries, thus, being capable for overcoming high resistances at the surfaces, grain-boundaries of nanoparticles or compartments of the nanoparticles by a material treatment selected from: (i) a ball-mill procedure under aerosol and/or vapour-pressure atmosphere, (ii) excess-synthesis, (iii) ball-milling with surface stabilizing and conductivity enhancing solid or/and gel/liquid additives or (iv) functionalizing the material to obtain functionalized nanoparticles (GSNP) comprising a dispersion of graphene, nanotubes and/or a further additive selected from carbon-black, graphite, Si and/or CF.sub.X, Herein, fluorides (Em.sub.mF.sub.h), fluorides composites (Em1.sub.m1Em2.sub.m2 . . . F.sub.h1) are synthesized, wherein a first metal, metalloid or non-metal Em or Em1 and a second metal, metalloid or non-metal Em2 are dissimilarly selected from various elements in a manner that a battery material having an increased ionic conductivity is obtained.

The present application relates to copper-doped double perovskites, for example, copper-doped double perovskites of the formula (I) and to uses thereof, for example as low-bandgap materials such as a semiconducting material in a device. The present application also relates to methods of tuning the bandgap of a Cs.sub.2SbAgZ.sub.6 double perovskite (for example, wherein Z is Cl) comprising doping the double perovskite with copper.
Cs.sub.2Sb.sub.1-aAg.sub.1-bCu.sub.2xZ.sub.6  (I)