Title:
非水電解質二次電池用正極材料およびそれを用いた非水電解質二次電池
Document Type and Number:
Japanese Patent JP5830540
Kind Code:
B2
Abstract:
In order to provide a secondary battery positive electrode material having a crystal structure having a highly thermally stable pyrophosphoric acid P2O7 structure as a fundamental skeleton and capable of obtaining a high discharging capacity and also to provide a secondary battery using the secondary battery positive electrode material, the following configuration is employed. The secondary battery positive electrode material consists primarily of a chemical composition formula of A2-xMP2O7-deltaZdelta, wherein: A is an alkali metal (1 to 4) such as, for example, lithium; M is a transition metal such as, for example, iron that is able to form a divalent or more multivalent ion; Z is a halogen such as, for example, fluorine; x is 0 or more and less than 2; and delta is greater than 0 and less than or equal to 1.47. A secondary battery using this positive electrode material is also provided.
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Inventors:
Yusuke Asari
Yuji Suwa
Yuji Suwa
Application Number:
JP2013532403A
Publication Date:
December 09, 2015
Filing Date:
May 28, 2012
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01M4/58
Domestic Patent References:
| JP2014221690A | ||||
| JP2006523930A | ||||
| JP3624205B2 | ||||
| JP2010260761A | ||||
| JP2009538495A | ||||
| JP2011040311A |
Foreign References:
| WO2013035572A1 | ||||
| WO2013031331A1 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki