非水系二次電池、セルパック、及び、ハイブリッドシステム

Title:

非水系二次電池、セルパック、及び、ハイブリッドシステム

Document Type and Number:

Japanese Patent JP7248764

Kind Code:

B2

Abstract:

To provide a non-aqueous electrolyte solution, a non-aqueous secondary battery, a cell pack, and a hybrid power system, capable of improving desired battery performance using acetonitrile, the non-aqueous electrolyte solution contains acetonitrile, lithium salt, and cyclic acid anhydride. The non-aqueous secondary battery includes a positive electrode having a positive-electrode active material layer formed on one surface or both surfaces of a current collector, a negative electrode having a negative-electrode active material layer formed on one surface or both surfaces of a current collector, and a non-aqueous electrolyte solution. The non-aqueous electrolyte solution contains acetonitrile and lithium salt. The non-aqueous secondary battery has a capacity retention rate of 70% or higher. The capacity retention rate is calculated by dividing a 5C discharge capacity by a 1C discharge capacity after a storage test at 85°C for 4 hours. The non-aqueous secondary battery has a 0°C ionic conductivity of 10 mS/cm or higher after a storage test at 85°C for 4 hours.

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Inventors:

Naoki Matsuoka
Kamine Takeshi
Takahashi Mao
Kazuyuki Fujiwara

Application Number:

JP2021180264A

Publication Date:

March 29, 2023

Filing Date:

November 04, 2021

Export Citation:

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Assignee:

ASAHI KASEI KABUSHIKI KAISHA

International Classes:

H01M10/0567; H01M4/38; H01M4/42; H01M4/46; H01M4/505; H01M4/525; H01M10/052; H01M10/0568; H01M10/0569; H01M50/211

Domestic Patent References:

JP2015531738A
JP2017054822A
JP2004259681A
JP2014007052A
JP2008305771A
JP2015090859A
JP2005050585A
JP2011154987A
JP2016178125A
JP2015133255A

Foreign References:

WO2016021596A1
WO2013054795A1
CN102324562A
WO2016159108A1

Attorney, Agent or Firm:

Hiroyoshi Aoki
Masayuki Amada
Miwa justice

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