The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2014
Filed:
Mar. 31, 2010
Shinya Kagei, Takehara, JP;
Keisuke Miyanohara, Takehara, JP;
Yoshimi Hata, Takehara, JP;
Yasuhiro Ochi, Takehara, JP;
Kenji Sasaki, Takehara, JP;
Shinya Kagei, Takehara, JP;
Keisuke Miyanohara, Takehara, JP;
Yoshimi Hata, Takehara, JP;
Yasuhiro Ochi, Takehara, JP;
Kenji Sasaki, Takehara, JP;
Abstract
With the object of providing a positive electrode active material for lithium battery that can increase the filling density, can increase the output characteristics, and furthermore, with a small voltage decrease during conservation at high temperature in a charged state, a positive electrode active material for lithium battery is proposed, containing a spinel type (Fd3-m) lithium transition metal oxide represented by general formula LiMO(where M represents a transition metal including Mn, Al and Mg, x represents 0.01 to 0.08 and 0≦δ) and a boron compound, the inter-the atomic distance Li—O of the spinel type lithium transition metal oxide being 1.971 Å to 2.006 Å, and the amount of magnetic substance measured for the positive electrode active material for lithium battery being 600 ppb or less.