Global to push GA events into
skip to main content

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

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

Works referenced in this record:

Sodium and sodium-ion energy storage batteries
journal, August 2012
  • Ellis, Brian L.; Nazar, Linda F.
  • Current Opinion in Solid State and Materials Science, Vol. 16, Issue 4, p. 168-177
  • DOI: 10.1016/j.cossms.2012.04.002

Metal Oxide Hollow Nanostructures for Lithium-ion Batteries
journal, March 2012
  • Wang, Zhiyu; Zhou, Liang; David Lou, Xiong Wen
  • Advanced Materials, Vol. 24, Issue 14, p. 1903-1911
  • DOI: 10.1002/adma.201200469