Surface modification of active material structures in battery electrodes
Abstract
Provided herein are methods of processing electrode active material structures for use in electrochemical cells or, more specifically, methods of forming surface layers on these structures. The structures are combined with a liquid to form a mixture. The mixture includes a surface reagent that chemically reacts and forms a surface layer covalently bound to the structures. The surface reagent may be a part of the initial liquid or added to the mixture after the liquid is combined with the structures. In some embodiments, the mixture may be processed to form a powder containing the structures with the surface layer thereon. Alternatively, the mixture may be deposited onto a current collecting substrate and dried to form an electrode layer. Furthermore, the liquid may be an electrolyte containing the surface reagent and a salt. The liquid soaks the previously arranged electrodes in order to contact the structures with the surface reagent.
- Inventors:
- Issue Date:
- Research Org.:
- A123 Systems LLC, Waltham, MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1241531
- Patent Number(s):
- 9252421
- Application Number:
- 14/057,931
- Assignee:
- A123 Systems LLC (Waltham, MA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- DOE Contract Number:
- FC26-05NT42403
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Oct 18
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Erickson, Michael, and Tikhonov, Konstantin. Surface modification of active material structures in battery electrodes. United States: N. p., 2016.
Web.
Erickson, Michael, & Tikhonov, Konstantin. Surface modification of active material structures in battery electrodes. United States.
Erickson, Michael, and Tikhonov, Konstantin. Tue .
"Surface modification of active material structures in battery electrodes". United States. https://www.osti.gov/servlets/purl/1241531.
@article{osti_1241531,
title = {Surface modification of active material structures in battery electrodes},
author = {Erickson, Michael and Tikhonov, Konstantin},
abstractNote = {Provided herein are methods of processing electrode active material structures for use in electrochemical cells or, more specifically, methods of forming surface layers on these structures. The structures are combined with a liquid to form a mixture. The mixture includes a surface reagent that chemically reacts and forms a surface layer covalently bound to the structures. The surface reagent may be a part of the initial liquid or added to the mixture after the liquid is combined with the structures. In some embodiments, the mixture may be processed to form a powder containing the structures with the surface layer thereon. Alternatively, the mixture may be deposited onto a current collecting substrate and dried to form an electrode layer. Furthermore, the liquid may be an electrolyte containing the surface reagent and a salt. The liquid soaks the previously arranged electrodes in order to contact the structures with the surface reagent.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {2}
}
Works referenced in this record:
Separator Having Porous Coating Layer And Electrochemical Device Having The Same
patent-application, June 2013
- Yu, Hyung-Kyun; Kim, Jong-Hun; Hong, Jang-Hyuk
- US Patent Application 13/634951; 20130149587