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Title: Structurally controlled deposition of silicon onto nanowires

Abstract

Provided herein are nanostructures for lithium ion battery electrodes and methods of fabrication. In some embodiments, a nanostructure template coated with a silicon coating is provided. The silicon coating may include a non-conformal, more porous layer and a conformal, denser layer on the non-conformal, more porous layer. In some embodiments, two different deposition processes, e.g., a PECVD layer to deposit the non-conformal layer and a thermal CVD process to deposit the conformal layer, are used. Anodes including the nanostructures have longer cycle lifetimes than anodes made using either a PECVD or thermal CVD method alone.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Amprius, Inc., Sunnyvale, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1429075
Patent Number(s):
9923201
Application Number:
14/710,103
Assignee:
Amprius, Inc. (Sunnyvale, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
DE-EE0005474
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 May 12; Related Information: http://techportal.eere.energy.gov/application.do/ID=30873
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Wang, Weijie, Liu, Zuqin, Han, Song, Bornstein, Jonathan, and Stefan, Constantin Ionel. Structurally controlled deposition of silicon onto nanowires. United States: N. p., 2018. Web.
Wang, Weijie, Liu, Zuqin, Han, Song, Bornstein, Jonathan, & Stefan, Constantin Ionel. Structurally controlled deposition of silicon onto nanowires. United States.
Wang, Weijie, Liu, Zuqin, Han, Song, Bornstein, Jonathan, and Stefan, Constantin Ionel. Tue . "Structurally controlled deposition of silicon onto nanowires". United States. https://www.osti.gov/servlets/purl/1429075.
@article{osti_1429075,
title = {Structurally controlled deposition of silicon onto nanowires},
author = {Wang, Weijie and Liu, Zuqin and Han, Song and Bornstein, Jonathan and Stefan, Constantin Ionel},
abstractNote = {Provided herein are nanostructures for lithium ion battery electrodes and methods of fabrication. In some embodiments, a nanostructure template coated with a silicon coating is provided. The silicon coating may include a non-conformal, more porous layer and a conformal, denser layer on the non-conformal, more porous layer. In some embodiments, two different deposition processes, e.g., a PECVD layer to deposit the non-conformal layer and a thermal CVD process to deposit the conformal layer, are used. Anodes including the nanostructures have longer cycle lifetimes than anodes made using either a PECVD or thermal CVD method alone.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

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