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.:

US 8535829 B1

Expired

Date of Patent:

Sep. 17, 2013

Filed:

Apr. 06, 2007

Lithium transition metal-based compound powder for positive electrode material in lithium rechargeable battery, method for manufacturing the powder, spray dried product of the powder, firing precursor of the powder, and positive electrode for lithium rechargeable battery and lithium rechargeable battery using the powder

Applicants:

Kenji Shizuka, Ibaraki, JP;

Kenji Okahara, Ibaraki, JP;

Hiroyuki Imura, Kanagawa, JP;

Kaoru Terada, Ibaraki, JP;

Inventors:

Kenji Shizuka, Ibaraki, JP;

Kenji Okahara, Ibaraki, JP;

Hiroyuki Imura, Kanagawa, JP;

Kaoru Terada, Ibaraki, JP;

Assignee:

Mitsubishi Chemical Corporation, Tokyo, JP;

Attorney:

Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Patrick Ryan

Assistant Examiner:

Yoshitoshi Takeuchi

Int. Cl.

CPC ...

H01M 4/00 (2006.01); H01M 4/13 (2010.01);

U.S. Cl.

CPC ...

Abstract

There is provided a powder of a lithium transition-metal compound for a positive-electrode material in a lithium secondary battery, in which the use of the powder as that of a positive-electrode material in a lithium secondary battery achieves a good balance among improvement in battery performance, cost reduction, resistance to a higher voltage, and a higher level of safety. The powder of the lithium transition-metal compound for a positive-electrode material in a lithium secondary battery is characterized in that in a mercury intrusion curve obtained by mercury intrusion porosimetry, the amount of mercury intruded is in the range of 0.8 cm/g to 3 cm/g when the pressure is increased from 3.86 kPa to 413 MPa.

Find Patent Forward Citations

Shizuka, Kenji. (2013). Lithium transition metal-based compound powder for positive electrode material in lithium rechargeable battery, method for manufacturing the powder, spray dried product of the powder, firing precursor of the powder, and positive electrode for lithium rechargeable battery and lithium rechargeable battery using the powder (U.S. Patent No. 8535829). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8535829

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