The solid electrolyte according to an embodiment of the present disclosure is represented by the following formula (1):

Li.sub.7−yLa.sub.3 (Zr.sub.2−x−yGe.sub.xM.sub.y) O.sub.12   (1)

wherein 0.00<x≤0.40, 0.00<y≤1.50, M is Sb or is Sb and an element of at least one of Nb and Ta.

A method for producing a solid composition according to the present disclosure includes producing an oxide to be converted into a first functional ceramic by reacting with an oxoacid compound, and mixing the oxide, the oxoacid compound, and a second functional ceramic that is different from the first functional ceramic. The oxoacid compound preferably contains at least one of a nitrate ion and a sulfate ion as an oxoanion.

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.

Provided are a hole transport material composite including a lead-free perovskite (Cs.sub.2SnI.sub.6), a liquid ionic conductor and a solvent that is a solid at a room temperature, a solar cell, and a method of manufacturing the lead-free perovskite-based hole transport material composite.

The present disclosure relates to a method that includes treating a liquid that includes a first precursor at a concentration C.sub.1, a second precursor at a concentration C.sub.2, a third precursor at a concentration C.sub.3, and an additive at a concentration C.sub.4, where the treating results in a perovskite, each of C.sub.1, C.sub.2, and C.sub.3 are between 0.001 M and 100 M, inclusively, and at least one of C.sub.4/C.sub.1 or C.sub.4/C.sub.2 equals a ratio greater than or equal to zero

A mixed conductor represented by Formula 1:

A.sub.xTi.sub.5yG.sub.zO.sub.12Formula 1 wherein, in Formula 1, A is a monovalent cation, G is at least one of a monovalent cation, a divalent cation, a trivalent cation, a tetravalent cation, a pentavalent cation, or a hexavalent cation, with the proviso that G is not Ti or Cr, wherein 0<x<2, 0.3<y<5, 0<z<5, and 0<3.

Thermoelectric materials based on tetrahedrite structures for thermoelectric devices and methods for producing thermoelectric materials and devices are disclosed. The thermoelectric device has a pair of conductors and a p-type thermoelectric material disposed between the conductors. The thermoelectric material is at least partially formed of a hot pressed high energy milled tetrahedrite formed of tetrahedrite ore and pure elements to form a tetrahedrite powder of Cu12-xMxSb4S13 disposed between the conductors, where M is at least one of Zn and Fe.

A sulfide solid electrolyte material, a gas-phase synthesis method for materials thereof and an application thereof are disclosed. The gas-phase synthesis method comprises: weighing a Li source and an M source according to a defined ratio, the M source being an oxide or sulfide of at least one of group 4, 5, 6, 13, 14 and 15 elements from the third period to the sixth period in the periodic table of elements; mixing and placing the mixed raw materials into a furnace; adding an S source into a sulfur source gas generation device; using a carrier gas, and performing gas washing on the furnace for a certain duration at a set ventilation rate; heating the furnace to 200-800 C. at a set heating rate in an environment in which the gas containing the S source is introduced at the set ventilation rate, keeping warm for a set duration, and then cooling to room temperature; and removing a sulfide solid electrolyte from the furnace.

ATO infrared absorbing fine particles having high coloring property (high light absorption property) which has both excellent dispersibility and solar radiation shielding properties and can reduce a use amount of ATO infrared ray absorbing fine particles can be provided, wherein crystal lattice constant a is 4.736 or more and 4.743 or less, crystal lattice constant c is 3.187 or more and 3.192 or less, and a crystallite size is 5.5 nm or more and 10.0 nm or less, which are analyzed by an X-ray diffraction measurement result.

Amorphous metal chalcogenides having the formula A.sub.2xSn.sub.xSb.sub.3-xQ.sub.6 are provided. In the chalcogenides, A is an alkali metal element, such as K or Cs, and Q is S or Se. The value of x can be in the range from 0.8 to 1. Porous chalcogenide materials made from the amorphous chalcogenides are also provided. These porous materials comprise metal chalcogenides having the formula (AB).sub.2xSn.sub.xSb.sub.3-xQ.sub.6, wherein x is in the range from 0.8 to 1, A and B are two different alkali metal elements, and Q is S or Se.