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Title: Hollow nanoparticle cathode materials for sodium electrochemical cells and batteries

Abstract

A cathode comprises, in its discharged state, a layer of hollow .gamma.-Fe.sub.2O.sub.3 nanoparticles disposed between two layers of carbon nanotubes, and preferably including a metallic current collector in contact with one of the layers of carbon nanotubes. Individual particles of the hollow .gamma.-Fe.sub.2O.sub.3 nanoparticles comprise a crystalline shell of .gamma.-Fe.sub.2O.sub.3 including cation vacancies within the crystal structure of the shell (i.e., iron vacancies of anywhere between 3% to 90%, and preferably 44 to 77% of available octahedral iron sites). Sodium ions are intercalated within at least some of the cation vacancies within the crystalline shell of the hollow .gamma.-Fe.sub.2O.sub.3 nanoparticles.

Inventors:
; ; ;
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1261598
Patent Number(s):
9,391,319
Application Number:
14/133,137
Assignee:
UCHICAGO ARGONNE, LLC (Chicago, IL)
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Dec 18
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Shevchenko, Elena, Rajh, Tijana, Johnson, Christopher S., and Koo, Bonil. Hollow nanoparticle cathode materials for sodium electrochemical cells and batteries. United States: N. p., 2016. Web.
Shevchenko, Elena, Rajh, Tijana, Johnson, Christopher S., & Koo, Bonil. Hollow nanoparticle cathode materials for sodium electrochemical cells and batteries. United States.
Shevchenko, Elena, Rajh, Tijana, Johnson, Christopher S., and Koo, Bonil. Tue . "Hollow nanoparticle cathode materials for sodium electrochemical cells and batteries". United States. https://www.osti.gov/servlets/purl/1261598.
@article{osti_1261598,
title = {Hollow nanoparticle cathode materials for sodium electrochemical cells and batteries},
author = {Shevchenko, Elena and Rajh, Tijana and Johnson, Christopher S. and Koo, Bonil},
abstractNote = {A cathode comprises, in its discharged state, a layer of hollow .gamma.-Fe.sub.2O.sub.3 nanoparticles disposed between two layers of carbon nanotubes, and preferably including a metallic current collector in contact with one of the layers of carbon nanotubes. Individual particles of the hollow .gamma.-Fe.sub.2O.sub.3 nanoparticles comprise a crystalline shell of .gamma.-Fe.sub.2O.sub.3 including cation vacancies within the crystal structure of the shell (i.e., iron vacancies of anywhere between 3% to 90%, and preferably 44 to 77% of available octahedral iron sites). Sodium ions are intercalated within at least some of the cation vacancies within the crystalline shell of the hollow .gamma.-Fe.sub.2O.sub.3 nanoparticles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {7}
}

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Works referenced in this record:

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