A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and that is represented by the composition formula (1):
Li.sub.xA.sub.yMe.sub.zO.sub.F.sub.(1) wherein A denotes Na or K, Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied.
1.7x+y2.2
0y0.2
0.8z1.3
12.5
0.52

The present invention relates to a process for producing a composite-fluoride fluorescent material represented by the general formula A.sub.2MF.sub.6:Mn.sup.4+ (wherein A is at least one alkali metal element including K; M is one or more metallic elements including at least Si or Ge and selected from among Si, Ge, Sn, Ti, Zr, and Hf; F is fluorine; and Mn is manganese). With the production process, it is possible to obtain a fluorescent material which is high in absorptance, internal quantum efficiency, and external quantum efficiency and has excellent optical properties.

The invention relates to electrodes that contain active materials of the formula: A.sub.aM.sub.bX.sub.xO.sub.y wherein A is one or more alkali metals selected from lithium, sodium and potassium; M is selected from one or more transition metals and/or one or more non-transition metals and/or one or more metalloids; X comprises one or more atoms selected from niobium, antimony, tellurium, tantalum, bismuth and selenium; and further wherein 0<a6; b is in the range: 0<b4; x is in the range 0<x1 and y is in the range 2y10. Such electrodes are useful in, for example, sodium and/or lithium ion battery applications.

Mixed-metal oxides and lithiated mixed-metal oxides are disclosed that involve compounds according to, respectively, Ni.sub.xMn.sub.yCo.sub.zMe.sub.O.sub. and Li.sub.1+Ni.sub.xMn.sub.yCo.sub.zMe.sub.O.sub.. In these compounds, Me is selected from B, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Fe, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ru, Ag, In, and combinations thereof; 0x1; 0y1; 0z<1; x+y+z>0; 00.5; and x+y+>0. For the mixed-metal oxides, 15. For the lithiated mixed-metal oxides, 0.11.0 and 1.93. The mixed-metal oxides and the lithiated mixed-metal oxides include particles having an average density greater than or equal to 90% of an ideal crystalline density.

This disclosure pertains to a food product comprising a composition comprising a basic metal salt, particularly pet food products, and further pertains to the use of such composition to reduce lipid oxidation and/or discoloration of such food product, particularly wet food products, e.g., during processing and storage.

An iron-based oxide magnetic particle powder has a narrow particle size distribution a small content of fine particles that do not contribute to magnetic recording characteristics, and a narrow coercive force distribution, to enhance magnetic recording medium density. Neutralizing an aqueous solution containing a trivalent iron ion and an ion of the metal substituting a part of the Fe sites by adding an alkali to make pH of 1.5 or more and 2.5 or less, adding a hydroxycarboxylic acid, and further neutralizing by adding an alkali to make pH of 8.0 or more and 9.0 or less are performed at 5 C. or more and 25 C. or less. A formed iron oxyhydroxide precipitate containing the substituting metal element is rinsed with water, then coated with silicon oxide, and then heated thereby providing e-type iron-based oxide magnetic particle powder. The rinsed precipitate may be subjected to a hydrothermal treatment.

A lithium metal oxide suitable for use as a cathode material in a rechargeable battery having a general formula of: Li.sub.xM.sub.zM.sub.zO.sub.uF.sub.y, where x is 1.80<x<2.20, y=1, and more specifically 1.90<x<2.10, with 1.80<u<2.20. Preferably, 1.90<u<2.10, and 0.80<y<1.20, or more specifically, 0.90<y<1.10. The lithium metal oxide has a cation-disordered rocksalt structure, wherein M is a transition metal selected from a first group consisting of Ni, Mn, Co, Fe, and combinations thereof. M is a transition metal selected from a second group consisting of Ti, Zr, Nb, Mo, Sn, Hf, Te, Sb, and combinations thereof. M has a first oxidation state q and M has a second oxidation state q, with (q/z)+(q/z)=+3, preferably +2.7q/z)+(q/z)+3.3.

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 which may include multiple chelation species (Che_x). The composition, compound, device, and uses thereof according to A.sub.xMn.sub.(y-k)M.sup.j.sub.k[Mn.sup.m(CN).sub.(6-p-q)(NC).sub.p(Che_I).sup.r.sub.q].sub.z.CHE_GROUP (Vac).sub.(1-z).nH.sub.2O, wherein CHE_GROUP includes one or more chelation materials selected from the group consisting of (Che_I).sup.r.sub.w, (Che_II).sup.s.sub.v, and combinations thereof, and wherein 0<j4, 0k0.1, 0(p+q)6, 0<x4, 0<y1, 0<z1, 0<w0.2; 3r3; 0<v0.2; 3s3; and 0n6; wherein x+2(yk)+jk+(m+(r+1)q6)z+wr+vs=0.

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 which may include multiple chelation species (Che_x). The composition, compound, device, and uses thereof according to A.sub.xMn.sub.(y-k)M.sup.j.sub.k[Mn.sup.m(CN).sub.(6-p-q)(NC).sub.p(Che_I).sup.r.sub.q].sub.z. CHE_GROUP (Vac).sub.(1-z).nH.sub.2O, wherein CHE_GROUP includes one or more chelation materials selected from the group consisting of (Che_I).sup.r.sub.w, (Che_II).sup.s.sub.v, and combinations thereof, and wherein 0<j4, 0k0.1, 0(p+q)6, 0<x4, 0<y1, 0<z1, 0<w0.2; 3r3; 0<v0.2; 3s3; and 0n6; wherein x+2(yk)+jk+(m+(r+1)q6)z+wr+vs=0.

Process for synthesizing a material, the process including the steps consisting in: a) providing a plurality of powders including: at least one powder including lithium, at least one powder including, for more than 95.0% of its mass, a transition metal chosen from titanium, cobalt, manganese, nickel, niobium, tin, iron and mixtures thereof, and at least one powder including, for more than 95.0% of its mass, a chalcogen element chosen from sulfur, selenium, tellurium and mixtures thereof, b) preparing a particulate mixture by mixing all the powders of the plurality or by mixing one of the powders of the plurality with a milled material obtained by milling a particulate assembly formed by mixing at least two of the other powders of the plurality, and milling the particulate mixture to form the material.