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US 2026/0058235 A1Published application
Current collecting foil, bipolar storage battery, and material recovery method of bipolar storage battery
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKazuhito KATO, Tomohiro Yokoyama, Seigo Fujishima, Nariaki Miki, Satoshi Morioka, Takeshi Abe, Masashi Kato
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Abstract
A current collecting foil is obtained by adhering a positive electrode foil and a negative electrode foil to each other via an adhesive layer containing a conductive material. Further, the adhesive layer contains a resin foaming agent.
Claims13
A current collecting foil obtained by adhering a positive electrode foil and a negative electrode foil to each other via an adhesive layer containing a conductive material, wherein
- the adhesive layer contains a resin foaming agent.
A bipolar storage battery comprising:
- a current collecting foil obtained by adhering a positive electrode foil and a negative electrode foil to each other via an adhesive layer containing a conductive material, wherein
- the adhesive layer contains a resin foaming agent.
A material recovery method of a bipolar storage battery, comprising:
- a disassembling step of disassembling the bipolar storage battery to separate a bipolar electrode from components;
- a foaming step of heating the separated bipolar electrode to allow a resin foaming agent contained in an adhesive layer of a current collecting foil forming the bipolar electrode to foam to increase a thickness of the adhesive layer;
- and
- a separation step of separating a positive electrode foil and a negative electrode foil adhered to each other via the adhesive layer in the current collecting foil in a state in which the resin foaming agent foams to increase the thickness of the adhesive layer.
1 more element
Dependencies are inferred from the claim text.