A solid electrolyte material of the present disclosure includes: Li; M; Al; O; and X, wherein the M is at least one selected from the group consisting of Ta and Nb, and the X is at least one selected from the group consisting of F, Cl, and Br.

A positive electrode material includes: a positive electrode active material; a coating layer covering at least part of the surface of the positive electrode active material; and a second solid electrolyte. The coating layer includes a first solid electrolyte. The first solid electrolyte includes Li, M1 and F. M1 is at least one selected from the group consisting of Ti, Al and Zr. The second solid electrolyte includes Li, M2, O and X. M2 is at least one selected from the group consisting of Ta and Nb. X is at least one selected from the group consisting of F, Cl, Br and I.

A lithium battery includes: a positive electrode having a positive active material; a negative electrode including lithium metal; and a solid electrolyte disposed therebetween. The solid electrolyte contains at least one oxide represented by Li.sub.4±xM.sub.1-x′M′.sub.x′O.sub.4 (Formula 1), Li.sub.4-yM″O.sub.4-yA′.sub.y (Formula 2), or Li.sub.4+4zM′″.sub.1-zO.sub.4 (Formula 3), wherein and 0≤x23 1 and 0≤x′≤1, M is a Group 4 element, and M′ is an element of Group 2, 3, 5, 12, or 13, a vacancy, or a combination thereof, with the proviso that when M is Zr, then x≠0, x′≠0 and M′ is Be, Ca, Sr, Ba, Ra, Cd, Hg, Cn, Ga, In, TI, an element of Group 3 or 5, or a combination thereof; 0≤y≤1, M″ is a Group 4 element, and A′ includes at least one halogen, with the proviso that when M″ is Zr, then y≠0; and 0<z<1, and M′″ is a Group 4 element.

The disclosure relates to porous garnet ribbons and methods of making such porous garnet ribbons.

The present application provides vanadium dioxide doped with Ti, or vanadium dioxide further doped with other atoms selected from the group of W, Ta, Mo, and Nb. The vanadium dioxide of the present application is excellent in moisture resistance and in which deterioration of endothermic characteristics due to moisture is suppressed.

Disclosed are embodiments of a barium magnesium tantalate including additional components to increase the Q value of the material. In some embodiments, complex tungsten oxides and/or hexagonal perovskite crystal structures can be added into the barium magnesium tantalate to provide for advantageous properties. In some embodiments, no tin is used in the formation of the material.

Provided is an electrochemical element having excellent load characteristics and charge-discharge cycle characteristics, an electrode active material that can constitute the electrochemical element, a method for manufacturing the electrode active material, an electrode material, an electrode, and a movable body including the electrochemical element. The electrode active material for an electrochemical element according to the present invention includes an oxide that has a monoclinic crystal structure and satisfies the following general formula (1): A.sub.yM.sup.1.sub.αAl.sub.x−αNb.sub.12−x−zM.sup.2.sub.zO.sub.29−δ (1). In the general formula (1), A is at least one element selected from Li and Na, M1 is at least one element selected from the group consisting of Fe, Mn, Zn Cu, Ag, Mg Ca, Sr, Ba, Co, Eu, Y, Bi, La, Ce, Nd, Sm, and Gd, M2 is specific element, awl x, y, z, δ, and α satisfy 0<x≤1.1, 0≤y≤24, 0≤z≤2, −1≤δ≤2, and 0<α≤0.4x.

Disclosed is a solid state electrolyte comprising a compound of Formula 1

Li.sub.7-.sub.a.sub.*α-(b−4)*β−xM.sup.a.sub.αLa.sub.3Hf.sub.2−βM.sup.b.sub.βO.sub.12−x−δX.sub.x   (1)

wherein

M.sup.a is a cationic element having a valence of a+;

M.sup.b is a cationic element having a valence of b+; and

X is an anion having a valence of −1,

wherein, when M.sup.a includes H, 0≤α≤5, otherwise 0≤α≤0.75, and wherein 0≤β≤1.5, 0≤x≤1.5, and (a*α+(b−4)β+x)>0, 0≤δ≤1.

A mixed conductor represented by Formula 1:
A.sub.4±xTi.sub.5−yG.sub.zO.sub.12−δ  Formula 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<δ≤3.

Nanoporous metal oxide framework compositions useful as anodic materials in a lithium ion battery, the composition comprising metal oxide nanocrystals interconnected in a nanoporous framework and having interconnected channels, wherein the metal in said metal oxide comprises titanium and at least one metal selected from niobium and tantalum, e.g., TiNb.sub.2-x Ta.sub.xO.sub.y (wherein x is a value from 0 to 2, and y is a value from 7 to 10) and Ti.sub.2Nb.sub.10-vTa.sub.vO.sub.w (wherein v is a value from 0 to 2, and w is a value from 27 to 29). A novel sol gel method is also described in which sol gel reactive precursors are combined with a templating agent under sol gel reaction conditions to produce a hybrid precursor, and the precursor calcined to form the anodic composition. The invention is also directed to lithium ion batteries in which the nanoporous framework material is incorporated in an anode of the battery.