The present invention concerns specific new compounds of formula Li.sub.(2x)Na.sub.(x)MO.sub.(2y/2)F.sub.(1+y) (where 0x0.2 and 0.6y0,8 and M is a transition metal), cathode material comprising the new compounds, batteries and lithium-cells comprising said new compound or cathode material, a process for the production of the new compound and their use.

A negative electrode active material having a ?-LVO-type crystal structure, in which a part of the V element of the ?-LVO-type crystal structure is substituted with one or more elements capable of having a tetracoordinate structure, and preferably, the one or more elements capable of having the tetracoordinate structure are one or more elements selected from Zn, Al, Ga, Si, Ge, P, and Ti.

A CoVO.sub.x composite electrode and method of making is described. The composite electrode comprises a substrate with an average 0.5-5 ?m thick layer of CoVO.sub.x having pores with average diameters of 2-200 nm. The method of making the composite electrode involves contacting the substrate with an aerosol comprising a solvent, a cobalt complex, and a vanadium complex. The CoVO.sub.x composite electrode is capable of being used in an electrochemical cell for water oxidation.

A CoVO.sub.x composite electrode and method of making is described. The composite electrode comprises a substrate with an average 0.5-5 ?m thick layer of CoVO.sub.x having pores with average diameters of 2-200 nm. The method of making the composite electrode involves contacting the substrate with an aerosol comprising a solvent, a cobalt complex, and a vanadium complex. The CoVO.sub.x composite electrode is capable of being used in an electrochemical cell for water oxidation.

The invention relates to a coating composition comprising an autoxidizable alkyd-based resin and a drier composition, the drier composition comprising: a) an iron-ligand complex comprising iron and at least one bispidine ligand; and b) a vanadium compound; wherein the amount of the vanadium compound is such that the coating composition comprises vanadium in a concentration in the range of from 0.01 wt % to 1.0 wt %, based on the solid weight of alkyd-based resin and wherein the amount of iron-ligand complex is such that the coating composition comprises iron in a concentration in the range of from 0.5.Math.10.sup.?4 wt % to 5.Math.10.sup.?3 wt %, based on the solid weight of alkyd-based resin.

In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li.sub.2+wNa.sub.2xM1.sub.yTi.sub.6zM2.sub.zO.sub.14+. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0w4, x is within a range of 0<x<2, y is within a range of 0y<2, z is within a range of 0<z6, and is within a range of 0.50.5.

According to one embodiment, an active material including a composite oxide is provided. The composite oxide has a monoclinic crystal structure and is represented by the general formula Li.sub.wM1.sub.2xTi.sub.8yM2.sub.zO.sub.17+, wherein: M1 is at least one selected from the group consisting of Cs, K, and Na; M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al;

0w10; 0<x<2; 0<y<8; 0<z<8;
and 0.50.5.

A CoVO.sub.x composite electrode and method of making is described. The composite electrode comprises a substrate with an average 0.5-5 ?m thick layer of CoVO.sub.x having pores with average diameters of 2-200 nm. The method of making the composite electrode involves contacting the substrate with an aerosol comprising a solvent, a cobalt complex, and a vanadium complex. The CoVO.sub.x composite electrode is capable of being used in an electrochemical cell for water oxidation.

The present disclosure relates to the field of new materials, and aims at providing an A-site high-entropy nanometer metal oxide with high conductivity, and a preparation method thereof. The metal oxide has molecular formula of Gd.sub.0.4Er.sub.0.3La.sub.0.4Nd.sub.0.5Y.sub.0.4)(Zr.sub.0.7, Sn.sub.0.8, V.sub.0.5)O.sub.7 and is a powder, and has microstructure of the metal oxide as a square nanometer sheet with a side length of 4-12 nm and a thickness of 1-3 nm. Compared with an existing high-entropy oxide, the product in the present disclosure has high conductivity, and can be well applied to a conductive alloy, an electrical contact composite material, a conductive composite material, a multifunctional bio-based composite material, a conductive/antistatic composite coating and the like.

The present disclosure belongs to the technical field of recovery and reuse of waste vanadium catalysts, and in particular relates to a method for preparing a vanadium battery electrolyte by dissolving a waste vanadium catalyst with sulfuric acid. In the present disclosure, the method includes the following steps: immersing the waste vanadium catalyst in dilute sulfuric acid, and conducting leaching by heating to obtain a vanadium leaching masterbatch; where the dilute sulfuric acid has a mass percentage of less than or equal to 25%, and the leaching by heating is conducted for less than or equal to 2 h; and mixing the vanadium leaching masterbatch with an oxalic acid solution, conducting reduction by heating, and subjecting an obtained reduced masterbatch to solid-liquid separation to obtain the vanadium battery electrolyte; where the vanadium battery electrolyte is a vanadyl sulfate solution.