Title:
METHODS AND APPARATUS FOR PRODUCING NANOMETER SCALE PARTICLES FOR ENERGY STORAGE MATERIALS
Document Type and Number:
WIPO Patent Application WO/2023/177713
Kind Code:
A3
Abstract:
Disclosed herein are methods and apparatus for producing nanometer scale particles for electrochemical materials utilizing an electrosterically stabilized slurry in a media mill. The method includes adding to a media mill a feed substrate suspension including a liquid carrier medium and electrochemical feed substrate particles. The method further includes adding to the feed substrate suspension in the media mill an electrosteric dispersant that includes a polyelectrolyte. Still further, the method includes operating the media mill for a period of time to comminute the feed substrate particles, thereby forming nanometer scale particles having a (D90) particle size of less than about one micron, and recirculating for further grinding the nanometer scale particles from the media mill.
Inventors:
PITCHUMANI RAMANAN (US)
WELLS WILLIAM (US)
WELLER DAVID (US)
WELLS WILLIAM (US)
WELLER DAVID (US)
Application Number:
PCT/US2023/015259
Publication Date:
October 26, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
U S SILICA COMPANY (US)
International Classes:
H01M4/04; B82Y30/00
Foreign References:
| US20150158728A1 | 2015-06-11 | |||
| US20050199556A1 | 2005-09-15 | |||
| US20190198837A1 | 2019-06-27 | |||
| US20140246398A1 | 2014-09-04 | |||
| US20220209215A1 | 2022-06-30 | |||
| IN202121060112A | 2022-01-07 | |||
| US20180108904A1 | 2018-04-19 |
Other References:
BAKLOUTI, S. PAGNOUX, C. CHARTIER, T. BAUMARD, J.F.: "Processing of Aqueous alpha-AI203, alpha-SiO2, and alpha-SiC Suspensions with Polyelectrolytes", JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, vol. 17, no. 12, 1 January 1997 (1997-01-01), AMSTERDAM, NL, pages 1387 - 1392, XP004097488, ISSN: 0955-2219, DOI: 10.1016/S0955-2219(97)00010-1
Attorney, Agent or Firm:
MARTINCHEK, Justin, P. et al. (US)
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