Hydration phase diagram for sodium cobalt oxide Na0.3CoO 2·yH2O

M. L. Foo; T. Klimczuk; R. J. Cava

doi:10.1016/j.materresbull.2005.01.001

Hydration phase diagram for sodium cobalt oxide Na_0.3CoO ₂·yH₂O

M. L. Foo, T. Klimczuk, R. J. Cava

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The hydration phase diagram for sodium cobalt oxhydrate, Na _0.3CoO₂·yH₂O (y = 0, 0.6 and 1.3), was determined as a function of relative humidity at 298 K It is found that greater than 75% relative humidity is needed for complete hydration of anhydrous Na _0.3CoO₂ to the superconducting phase Na _0.3CoO₂·1.3H₂O. Dehydration studies show that a minimum of 43% relative humidity is needed to maintain the stability of the fully hydrated superconducting phase. The intermediate hydrate, Na _0.3CoO₂·0.6H₂O, is stable between 10 and 50% relative humidity on hydration, and 35 and 0% relative humidity on dehydration.

Original language	English (US)
Pages (from-to)	665-670
Number of pages	6
Journal	Materials Research Bulletin
Volume	40
Issue number	4
DOIs	https://doi.org/10.1016/j.materresbull.2005.01.001
State	Published - Apr 20 2005

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

A. Layer compounds
A. Oxides
C. X-ray diffraction
D. Superconductivity

Access to Document

10.1016/j.materresbull.2005.01.001

Cite this

@article{7eddc0ac9d2e4c80accebdbcc15b56a0,

title = "Hydration phase diagram for sodium cobalt oxide Na0.3CoO 2·yH2O",

abstract = "The hydration phase diagram for sodium cobalt oxhydrate, Na 0.3CoO2·yH2O (y = 0, 0.6 and 1.3), was determined as a function of relative humidity at 298 K It is found that greater than 75% relative humidity is needed for complete hydration of anhydrous Na 0.3CoO2 to the superconducting phase Na 0.3CoO2·1.3H2O. Dehydration studies show that a minimum of 43% relative humidity is needed to maintain the stability of the fully hydrated superconducting phase. The intermediate hydrate, Na 0.3CoO2·0.6H2O, is stable between 10 and 50% relative humidity on hydration, and 35 and 0% relative humidity on dehydration.",

keywords = "A. Layer compounds, A. Oxides, C. X-ray diffraction, D. Superconductivity",

author = "Foo, {M. L.} and T. Klimczuk and Cava, {R. J.}",

note = "Funding Information: This work was supported by the US Department of Energy, grant DE-FG02-98-ER 45706.",

year = "2005",

month = apr,

day = "20",

doi = "10.1016/j.materresbull.2005.01.001",

language = "English (US)",

volume = "40",

pages = "665--670",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd",

number = "4",

}

TY - JOUR

T1 - Hydration phase diagram for sodium cobalt oxide Na0.3CoO 2·yH2O

AU - Foo, M. L.

AU - Klimczuk, T.

AU - Cava, R. J.

N1 - Funding Information: This work was supported by the US Department of Energy, grant DE-FG02-98-ER 45706.

PY - 2005/4/20

Y1 - 2005/4/20

N2 - The hydration phase diagram for sodium cobalt oxhydrate, Na 0.3CoO2·yH2O (y = 0, 0.6 and 1.3), was determined as a function of relative humidity at 298 K It is found that greater than 75% relative humidity is needed for complete hydration of anhydrous Na 0.3CoO2 to the superconducting phase Na 0.3CoO2·1.3H2O. Dehydration studies show that a minimum of 43% relative humidity is needed to maintain the stability of the fully hydrated superconducting phase. The intermediate hydrate, Na 0.3CoO2·0.6H2O, is stable between 10 and 50% relative humidity on hydration, and 35 and 0% relative humidity on dehydration.

AB - The hydration phase diagram for sodium cobalt oxhydrate, Na 0.3CoO2·yH2O (y = 0, 0.6 and 1.3), was determined as a function of relative humidity at 298 K It is found that greater than 75% relative humidity is needed for complete hydration of anhydrous Na 0.3CoO2 to the superconducting phase Na 0.3CoO2·1.3H2O. Dehydration studies show that a minimum of 43% relative humidity is needed to maintain the stability of the fully hydrated superconducting phase. The intermediate hydrate, Na 0.3CoO2·0.6H2O, is stable between 10 and 50% relative humidity on hydration, and 35 and 0% relative humidity on dehydration.

KW - A. Layer compounds

KW - A. Oxides

KW - C. X-ray diffraction

KW - D. Superconductivity

UR - http://www.scopus.com/inward/record.url?scp=15344345563&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15344345563&partnerID=8YFLogxK

U2 - 10.1016/j.materresbull.2005.01.001

DO - 10.1016/j.materresbull.2005.01.001

M3 - Article

AN - SCOPUS:15344345563

SN - 0025-5408

VL - 40

SP - 665

EP - 670

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 4

ER -