Three-dimensional current collector for metal secondary battery anode, its preparation and application
US11728489B2 · kind B2 · utility
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Key dates
| Filing date | Mar 26, 2018 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jan 12, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a three-dimensional current collector used in a metal secondary battery and the preparation method of said current collector. Said current collector is a three-dimensional porous hollow carbon fiber current collector which has both porous structure and hollow structure and is used to load metal anode, so that lithium dendrites growth can be suppressed and the Coulombic efficiency can be improved. Said current collector is intertwined by micrometer-sized hollow carbon fibers with the diameter of 1 to 50 μm, the wall thick of 0.5 to 6 μm, and the pore volume of 0.005 to 0.05 cm3 cm−2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.