Abstract: A lithium cobalt metal oxide powder is disclosed in the present disclosure. The lithium cobalt metal oxide powder has a coating structure. The lithium cobalt metal oxide powder includes a lithium cobalt metal oxide matrix. The lithium cobalt metal oxide powder further includes a Co3O4 coating layer. A general formula of the lithium cobalt metal oxide powder is LiaCo1-x-yMxNyO2·rCo3O4, wherein 0.002<r?0.05, 1?a?1.1, 0<x?0.02, 0?y?0.005, and a<1+3r; M is a doping element; and N is a coating element. A method for making the lithium cobalt metal oxide powder as described above and a method for determining a content of Co3O4 therein are further provided. The material made in the present disclosure has an excellent electrochemical performance.

Abstract: A hydrate decomposition inhibiting composition, a coupling enhanced solid hydrate, and a method for improving the solid hydrate storage and transportation stability relating to the technical field of natural gas safety storage and transportation are provided. The hydrate decomposition inhibiting composition contains a carboxymethyl starch salt and an alkyl glycoside surfactant. The composition improves the interface stability of the hydrate phase boundary and the mechanical stability of the hydrate and enhance the strength of the hydrate crystal interface since the colloidal solution formed by dispersing the sodium carboxymethyl starch and the alkyl glycoside surfactant in water can coat the surface of the hydrate to form a protective layer, thereby improving the structural stability of the hydrate. Therefore, the composition inhibits the decomposition of the hydrate, reduces the decomposition rate of the hydrate, and can further reduce the decomposition amount of the hydrate.

Abstract: A hydrate promoter contains a component A which is a substance having a group represented by the Formula I below and a surfactant. A molar ratio of the component A to the surfactant is 1:(0.03-30). The hydrate overcomes the disadvantages of the conventional hydrate promoter, such as small gas storage capacity and low generation rate, the present disclosure is further capable of suppressing generation of air bubbles and improving the gas recovery rate of hydrate during decomposition process of the hydrate, as compared to the conventional hydrate promoter, thus has a favorable application prospect for natural gas storage and transportation with the hydrate.

Abstract: A lithium cobalt metal oxide powder is disclosed in the present disclosure. The lithium cobalt metal oxide powder has a coating structure. The lithium cobalt metal oxide powder includes a lithium cobalt metal oxide matrix. The lithium cobalt metal oxide powder further includes a Co3O4 coating layer. A general formula of the lithium cobalt metal oxide powder is LiaCo1-x-yMxNyO2.rCo3O4, wherein 0.002<r?0.05, 1?a?1.1, 0<x?0.02, 0?y?0.005, and a<1+3r; M is a doping element; and N is a coating element. A method for making the lithium cobalt metal oxide powder as described above and a method for determining a content of Co3O4 therein are further provided. The material made in the present disclosure has an excellent electrochemical performance.

Abstract: A high-rate lithium cobaltate cathode material, which contains a multi-channel network formed by fast ionic conductor Li?M??O?, mainly consists of lithium cobaltate. The lithium cobaltate is melted together with the fast ionic conductor Li?M??O? in the form of primary particles to form secondary particles. Besides, the lithium cobaltate is embedded in the multi-channel network formed by fast ionic conductor Li?M??O?. The element M? in Li?M??O? is one or more of Ti, Zr, Y, V, Nb, Mo, Sn, In, La, W and 1???4, 1???5, 2???12. The lithium cobaltate cathode material is mainly obtained by uniformly mixing cobaltous oxide impregnated with a hydroxide of M? and lithium source, then by the sintering reaction in an air atmosphere furnace at a high temperature. The product of the present invention can greatly promote the lithium ion conductivity of the lithium cobaltate cathode material during the charging and discharging process of the lithium-ion battery, and improve the rate performance of the material.

Abstract: A high-rate lithium cobaltate cathode material, which contains a multi-channel network formed by fast ionic conductor Li?M??O?, mainly consists of lithium cobaltate. The lithium cobaltate is melted together with the fast ionic conductor Li?M??O? in the form of primary particles to form secondary particles. Besides, the lithium cobaltate is embedded in the multi-channel network formed by fast ionic conductor Li?M??O?. The element M? in Li?M??O? is one or more of Ti, Zr, Y, V, Nb, Mo, Sn, In, La, W and 1???4, 1???5, 2???12. The lithium cobaltate cathode material is mainly obtained by uniformly mixing cobaltous oxide impregnated with a hydroxide of M? and lithium source, then by the sintering reaction in an air atmosphere furnace at a high temperature. The product of the present invention can greatly promote the lithium ion conductivity of the lithium cobaltate cathode material during the charging and discharging process of the lithium-ion battery, and improve the rate performance of the material.