Metal deposition methods for forming bimetallic structures, batteries incorporating bipolar current collectors made therefrom, and applications thereof
US10714756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2016 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Nov 28, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In certain aspects, electrolytic deposition and electroless displacement deposition methods are provided to form bimetallic structures that may be used as a bipolar current collector in a battery or a substrate for forming graphene sheets. In other aspects, bipolar current collectors for lithium-ion based electrochemical cells are provided. The bimetallic current collector may have an aluminum-containing surface and a continuous copper coating. In other aspects, a flexible substrate may be coated with one or more conductive materials, like nickel, copper, graphene, aluminum, alloys, and combinations thereof. The flexible substrate is folded to form a bipolar current collector. New stack assemblies for lithium-ion based batteries incorporating such bipolar current collectors are also provided that can have cells with a tab-free and/or weld-free design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.