A system, method, and articles of manufacture for a surface-modified transition metal cyanide coordination compound (TMCCC) composition, an improved electrode including the composition, and a manufacturing method for the composition according to Formula III—An electrochemical cell including a system having an anode, a cathode, and an electrolyte wherein the anode includes a material, including the material including at least one composition represented by Formula III: A.sub.xMn.sub.y[Mn(CN).sub.(6)].sub.z(Vac).sub.(1-z).n(H.sub.2O)m(Che) wherein, in Formula III, A includes one or more alkali metals including Na; and wherein 0<j≤4, 0≤k≤0.1, 1.2<x≤4, 0<y≤1, 0.8<z≤1, 0<n≤4; 0≤m≤0.2 and wherein x+2y−4z=0.

An object is to reduce variation in shape of crystals that are to be formed. Solutions containing respective raw materials are made in an environment where an oxygen concentration is lower than that in air, the solutions containing the respective raw materials are mixed in an environment where an oxygen concentration is lower than that in air to form a mixture solution, and with use of the mixture solution, a composite oxide is formed by a hydrothermal method.

A process for the synthesis of transition metal chalcogenides (TMC) having formula (I). More particularly, the present work relates to a one pot single phase process for the synthesis of a TMC system having formula (I) by wet chemistry. Formula (I) is represented as A.sub.x-B.sub.y.

Provided is a metal oxide containing a brownmillerite-type manganese oxide represented by (Ca.sub.2-xA.sub.x)(Mn.sub.yAl.sub.zE.sub.2-y-z).sub.wO.sub.5+δ (in the formula, A represents one or more alkaline earth metal elements other than Ca; E represents one or more 3d transition metal elements or earth metal elements other than Mn and Al; and x, y, z, δ, and w satisfy 0≤x≤2, 0<y≤2, 0≤z<2, 0<y+z≤2, 0≤δ≤0.5, and 0.8≤w≤1.2), wherein the metal oxide has a defect in a (020) plane of a crystal of the brownmillerite-type manganese oxide.

The present invention discloses a process for the preparation of metal sulphide quantum dots by using a very low cost sulphur precursor as a sulphur source. The metal sulphide quantum dots finds application in optical devices selected from photovoltaic cells, photodetectors and light-emission devices.

The present invention discloses a process for the preparation of metal sulphide quantum dots by using a very low cost sulphur precursor as a sulphur source. The metal sulphide quantum dots finds application in optical devices selected from photovoltaic cells, photodetectors and light-emission devices.

A method for producing a metal composite oxide, the method including steps of: preparing a slurry by mixing different kinds of metal compounds in a powder form, a dispersion medium, and a dispersant, and baking the different kinds of metal compounds after the dispersion medium in the slurry is removed. The slurry further includes a polyalkylene oxide having a viscosity average molecular weight of 150,000 or more. The slurry has a viscosity of 10 mPa.Math.s to 2000 mPa.Math.s, the viscosity being measured using a B-type viscometer under conditions of a temperature of 23° C. to 27° C. and a rotation rate of 60 rpm. According to the production method, a slurry in which different kinds metal compound powders are uniformly dispersed and a precipitate is unlikely to be formed can be obtained. Therefore, a metal composite oxide having a desired composition can be obtained.

Provided is a method for producing a near infrared-reflective black pigment containing at least the element calcium, the element titanium, and the element manganese, wherein the method produces a pigment that exhibits little of the elution of the element calcium and the element manganese that is caused by contact with acid. At least a calcium compound, a titanium compound, and a manganese compound are mixed by a wet grinding method and are calcined to provide a BET specific surface area of at least 1.0 m.sup.2/g and less than 3.0 m.sup.2/g. In another method, the element bismuth and/or the element aluminum is incorporated in a near infrared-reflective black pigment containing at least the element calcium, the element titanium, and the element manganese.

A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a lithium hexafluorophosphate and an additive. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): Li.sub.xMe.sub.yO.sub.αF.sub.β. The additive is at least one selected from the group consisting of difluorophosphates, tetrafluoroborates, bis(oxalate)borate salts, bis(trifluoromethanesulfonyl)imide salts, and bis(fluorosulfonyl)imide salts.

A class of compositions in the Li—Mn—O—F chemical space for Li-ion cathode materials. The compositions are cobalt-free, high-capacity Li-ion battery cathode materials synthesized with cation-disordered rocksalt (DRX) oxide or oxyfluorides, with the general formula Li.sub.xMn.sub.2-xO.sub.2-yF.sub.y (1.1≤x≤1.3333; 0≤y≤0.6667). The compositions are characterized by: (i) high capacities (e.g., >240 mAh/g); (ii) high energy densities (e.g., >750 Wh/kg between 1.5-4.8V); (iii) favorable cyclability; and (iv) low cost.