About 28 results
https://drivepatents.com/patents/1400178 · 9 Oct 2024
A method for treating battery waste includes: a first heat treatment step of heating the battery waste in an atmosphere containing at least one selected from the group consisting of nitrogen, carbon dioxide and water vapor; and after the first heat treatme...
https://drivepatents.com/patents/1399254 · 22 May 2024
A method for recovering at least cobalt of valuable metals, cobalt and nickel, from an acidic solution obtained by subjecting waste containing positive electrode materials for lithium ion secondary batteries to a wet process, the acidic solution comprising...
https://drivepatents.com/patents/977918 · 5 Mar 2014
The present invention provides a method for producing a high quality positive electrode active material for lithium ion batteries at low cost and at excellent production efficiency. The method for producing a positive electrode active material for lithium ...
https://drivepatents.com/patents/978726 · 12 Feb 2014
The present invention provides a method for producing a positive electrode active material for lithium ion battery, having excellent tap density, at excellent production efficiency, and a positive electrode active material for lithium ion battery. The meth...
https://drivepatents.com/patents/979056 · 5 Feb 2014
The present invention provides an electrolytic copper foil that has a high normal tensile strength, a low decrease in tensile strength after a thermal history, and a low concentration of impurities in the copper foil and a method for producing the copper f...
https://drivepatents.com/patents/978952 · 5 Feb 2014
The present invention provides an electrolytic copper foil which is excellent in the extension property and can endure the change in the expansion and contraction at the fine units while having high strength, and a method of producing the same. Specificall...
https://drivepatents.com/patents/978890 · 5 Feb 2014
The present invention provides a positive electrode active material for lithium ion batteries having satisfactory battery characteristics. The positive electrode active material for lithium ion batteries, is represented by the following composition formula...
https://drivepatents.com/patents/983685 · 9 Oct 2013
The present invention provides a positive electrode active material for lithium ion batteries having excellent battery property. The positive electrode active material for lithium ion batteries is represented by composition formula: Li x Ni 1-y M y O 2+a ,...
https://drivepatents.com/patents/990824 · 15 May 2013
A separator material for a fuel cell is provided, in which a uniform first Au-plated layer having a thickness of 0,5-4 nm is formed on one surface of a metal thin plate and a uniform second Au-plated layer having a larger thickness than that of the first A...
https://drivepatents.com/patents/994182 · 9 Jan 2013
The present invention provides a positive electrode active material for lithium ion battery which has a high capacity and good rate characteristics can be provided. The positive electrode active material for lithium ion battery has a layer structure repres...