Title:
POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/087631
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a positive electrode for nonaqueous electrolyte secondary batteries, which is capable of suppressing the amount of heat generation during an internal short circuit of a battery; and a nonaqueous electrolyte secondary battery which is provided with this positive electrode. A positive electrode for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure is provided with: a positive electrode collector; an intermediate layer which is arranged on the positive electrode collector and contains a conductive material and inorganic particles; and a positive electrode mixture layer which is arranged on the intermediate layer and contains a positive electrode active material and a hydrogenphosphate represented by general formula MaHbPO4 (wherein a satisfies 1 ≤ a ≤ 2; b satisfies 1 ≤ b ≤ 2; and M contains at least one element selected from among alkali metals and alkaline earth metals). This positive electrode for nonaqueous electrolyte secondary batteries is also configured such that if X (mass%) is the mass ratio of the hydrogenphosphate relative to the total mass of the positive electrode active material and Y (mass%) is the mass ratio of the conductive material relative to the total mass of the intermediate layer, X and Y satisfy relational expressions 0.5 ≤ X ≤ 3.0, 1.0 ≤ Y ≤ 7.0 and 0.07 ≤ X/Y ≤ 3.0.
Inventors:
KO TAKASHI
BABA YASUNORI
YANAGIDA KATSUNORI
HIRANO NOBUHIRO
NIINA FUMIHARU
BABA YASUNORI
YANAGIDA KATSUNORI
HIRANO NOBUHIRO
NIINA FUMIHARU
Application Number:
PCT/JP2018/036210
Publication Date:
May 09, 2019
Filing Date:
September 28, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/131; H01M4/505; H01M4/525; H01M4/62; H01M4/66
Domestic Patent References:
| WO2012005301A1 | 2012-01-12 |
Foreign References:
| JPH07307150A | 1995-11-21 | |||
| JP2016072221A | 2016-05-09 | |||
| JP2011528483A | 2011-11-17 | |||
| JP2016072221A | 2016-05-09 | |||
| JPH10154532A | 1998-06-09 |
Other References:
See also references of EP 3706206A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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