Volume change compensated silicon-silicon oxide-lithium composite material having nano silicon particles embedded in a silicon:silicon lithium silicate composite matrix, and cyclical ex-situ manufacturing processes
US10347907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Sep 30, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for producing a volume change compensated (SSLC) material is disclosed. An initially prelithiated SSLC material is produced and delithiated to produce a delithiated SSLC material. Perform at least one iteration involving: (a) re-prelithiating the delithiated SSLC material to produce a re-prelithiated SSLC material; and (b) delithiating the re-prelithiated SSLC material produced in (a). At least one of the following is satisfied: (i) prior to performing the at least one iteration the initially prelithiated SSLC material is essentially completely lithiated; and (ii) at least one iteration produces a re-prelithiated SSLC material that is essentially completely prelithiated. In a final iteration, delithiating the re-prelithiated SSLC material produced in (a) completely delithiates the re-prelithiated SSLC material to produce the volume change compensated SSLC material. The aforesaid process is performed ex situ with respect to fabrication of an anode that contains the produced volume change compensated SSLC material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.