Production method for electrochemically stable anode particulates for lithium secondary batteries
US10629899B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Oct 15, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a method of producing multiple anode particulates, comprising: a) dispersing an electrically conducting material, primary particles of an anode active material, an optional electron-conducting material, and a sacrificial material in a liquid medium to form a precursor mixture; b) forming the precursor mixture into droplets and drying the droplets; and c) removing the sacrificial material or thermally converting the sacrificial material into a carbon material to obtain multiple particulates, wherein a particulate comprises one or a plurality of anode active material particles having a volume Va, an electron-conducting material, and pores having a volume Vp which are encapsulated by a thin encapsulating layer having a thickness from 1 nm to 10 μm and a lithium ion conductivity from 10−8 S/cm to 5×10−2 S/cm and the volume ratio Vp/Va in the particulate is from 0.3/1.0 to 5.0/1.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.