High energy/power density, long cycle life, safe lithium-ion battery capable of long-term deep discharge/storage near zero volt and method of making and using the same
US11024846B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2018 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Mar 31, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high energy/power density, long cycle life and safe lithium ion cell capable of long-term deep discharge/storage near zero-volt is described. The cell utilizes a near zero-volt storage capable anode, such as a spinel Li4Ti5O12, coupled to a high voltage, high-energy and/or high-power density cathode, such as LiNi0.5Mn1.5O4. The near zero-volt storage cell is rechargeable and affords safety advantages for battery transportation, storage, and handling, and significant cost reductions for cell maintenance. The cells produce high-energy and/or high-power densities and long cycle life. The cell anode, cathode, and separator active materials are coated with one or more protection or stability enhancing and/or conductivity enhancing materials to enhance electrochemical performance and to strengthen stabilities for long-term cycle life and storage life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.