Flexible all-solid-state lithium-ion secondary battery having gelable system containing lithium salt and ether compound, and preparation method thereof
US11557793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2019 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | Aug 28, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flexible all-solid-state lithium-ion secondary battery is prepared by placing a positive electrode and a negative electrode or optionally a separator of the lithium-ion secondary battery in a gelable system in which a solid electrolyte has not yet formed by a way of infiltration or coating, so that the surfaces and the interiors of the positive and negative electrodes are infiltrated by the gelable system, which also fills the voids inside the positive and negative electrodes. When the gelable system is solidified to form the solid electrolyte, it can form the solid electrolyte in situ on the surfaces and interiors of the positive and negative electrodes. The lithium-ion secondary battery prepared by the method can form a conductive network inside the entire battery, which can not only extremely reduce the internal resistance of the lithium-ion secondary battery, thereby improving the conductivity and rate capability, but also solve the potential safety hazard problem caused by liquid electrolytes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.