非水電解質二次電池用負極活物質、及びそれを用いた非水電解質二次電池

Title:

非水電解質二次電池用負極活物質、及びそれを用いた非水電解質二次電池

Document Type and Number:

Japanese Patent JP5555978

Kind Code:

B2

Abstract:

To provide a negative electrode active material suited for improvement in capacity and cycle characteristics, as well as a nonaqueous electrolyte secondary battery using the same.

The negative electrode active material is made from powder containing 1 to 30% by mass of fine powder B with an accumulated diameter (D90) of 90% of 50 μm or less and with diameters less than 2 μm in a particle size distribution by the laser diffraction scattering system particle size measurement method. Therefore, improvement in capacity and cycle characteristics of the nonaqueous electrolyte secondary battery is achieved.

Inventors:

Koichiro Watanabe
Satoru Miyawaki
Shu Kashida
Hirofumi Fukuoka

Application Number:

JP2008047496A

Publication Date:

July 23, 2014

Filing Date:

February 28, 2008

Export Citation:

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Assignee:

Shin-Etsu Chemical Co., Ltd.

International Classes:

H01M4/1395; H01M4/48; H01M4/13; H01M4/134; H01M4/139; H01M4/36; H01M4/38; H01M4/587; H01M4/62

Attorney, Agent or Firm:

Takashi Kojima
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa
Katsuhiko Masaki

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