リチウムイオン二次電池 - National University Corporation Tokyo University

Title:

リチウムイオン二次電池

Document Type and Number:

Japanese Patent JP5817004

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery superior in battery characteristics, in which a metal oxide is used as a negative electrode active material.SOLUTION: In a lithium ion secondary battery, a negative electrode active material includes a metal oxide capable of occluding and releasing lithium ions; and an electrolyte contains a salt capable of producing cations of lithium and an organic solvent having a hetero element. Supposing that of the intensities of peaks from the organic solvent, the intensity of a peak originally coming from the organic solvent is "Io", and the intensity of a peak resulting from the shift of the original peak is "Is" in vibrational spectra of the electrolyte, the peak intensities "Io" and "Is" satisfy the following relation: Is>Io.

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Inventors:

Atsuo Yamada
Yuki Yamada
Yoshihiro Nakagaki
Tomoyuki Kawai
Kohei Mase
Yuki Hasegawa
Nobuhiro Goda

Application Number:

JP2014186341A

Publication Date:

November 18, 2015

Filing Date:

September 12, 2014

Export Citation:

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Assignee:

National University Corporation Tokyo University

International Classes:

H01M10/052; H01M4/48; H01M4/485; H01M10/0568; H01M10/0569

Domestic Patent References:

JP2002203562A
JP10069922A
JP2008047479A
JP2001507043A

Foreign References:

WO2006115023A1

Other References:

八重樫諒,溶媒分子の配位状態制御による有機溶液の新機能発現,第53回電池討論会講演要旨集,日本,(公社)電気化学会電池技術委員会,2012年11月13日,p.507

Attorney, Agent or Firm:

Patent business corporation Kyoritsu

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