Title:
OUTER PACKAGE MATERIAL FOR POWER STORAGE DEVICES, METHOD FOR PRODUCING SAME, AND POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/277108
Kind Code:
A1
Abstract:
An outer package material for power storage devices, the outer package material being composed of a multilayer body which sequentially comprises at least a base material layer, a barrier layer and a thermally fusible resin layer in this order, wherein: the barrier layer contains an aluminum alloy foil that has a composition containing 0.2% by mass to 2.0% by mass of Fe and 0.1% by mass to 5.0% by mass of Mg; and with respect to this aluminum alloy foil, the ratio of the length L1 of a high angle grain boundary to the length L2 of a low angle grain boundary per unit area as determined by a back scattering electron diffraction method satisfies the relational expression L1/L2 > 3.0.
Inventors:
TAKAHAGI ATSUKO (JP)
HAYASHI SHINJI (JP)
HIRAKI KENTA (JP)
YAMAZAKI MASAYASU (JP)
HAYASHI SHINJI (JP)
HIRAKI KENTA (JP)
YAMAZAKI MASAYASU (JP)
Application Number:
PCT/JP2022/026107
Publication Date:
January 05, 2023
Filing Date:
June 29, 2022
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
H01M50/105; C22C21/00; C22C21/06; C22F1/00; C22F1/04; C22F1/047; H01G11/78; H01M50/119; H01M50/129
Domestic Patent References:
| WO2020085189A1 | 2020-04-30 |
Foreign References:
| JP2021066927A | 2021-04-30 | |||
| JP2015165476A | 2015-09-17 | |||
| JP2008287971A | 2008-11-27 |
Attorney, Agent or Firm:
TANAKA, Junya et al. (JP)
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