Electrode group and non-aqueous electrolyte battery

Title:

Electrode group and non-aqueous electrolyte battery

Document Type and Number:

Japanese Patent JP6363439

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide an electrode group which enables the materialization of a nonaqueous electrolyte battery superior in rate characteristic and cycle characteristic.SOLUTION: An electrode group 1 according to an embodiment comprises: a negative electrode 4; a positive electrode 3; and a separator 5. The negative electrode 4 includes: a negative electrode current collector 4a; and a negative electrode layer 4b. The negative electrode layer 4b includes a lithium titanium oxide. The positive electrode 3 includes: a positive electrode current collector 3a; and a positive electrode layer 3b. The separator 5 is disposed between the negative electrode layer 4b and the positive electrode layer 3b. The separator 5 includes at least one material having a high heat resistance. The separator 5 has a thickness of 3-9 μm. The negative electrode current collector 4a includes: a negative electrode coating part 4c with a negative electrode layer 4b supported on its surface; and a negative electrode uncoated part 4d which does not support the negative electrode layer 4b on the surface. The ratio of the area of the negative electrode uncoated part 4d to the area of the negative electrode coating part 4c is 0.05-0.07.SELECTED DRAWING: Figure 1

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Inventors:

Yamamoto Dai
Hideto Saruwatari
Tetsuro Kano
Yuki Watanabe
Masataka Shikoda
Genki Yamagishi

Application Number:

JP2014184230A

Publication Date:

July 25, 2018

Filing Date:

September 10, 2014

Export Citation:

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Assignee:

Toshiba Corporation
Toshiba Infrastructure Systems & Solutions Corporation

International Classes:

H01M10/0587; H01M2/16; H01M4/131; H01M4/485; H01M10/052

Domestic Patent References:

JP2013187077A
JP2006253081A
JP2009117092A
JP9306470A
JP2007335166A
JP2012209181A

Foreign References:

US20110281154

Attorney, Agent or Firm:

Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Ukai Ken

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