Protonic and electronic conductivity of the layered perovskite oxides HCa2Nb3O10 and Ca4Nb 6O19

Thomas I. Draskovic; Tsinghai Wang; Camden N. Henderson; Thomas E. Mallouk

doi:10.1016/j.ijhydene.2014.01.017

Protonic and electronic conductivity of the layered perovskite oxides HCa₂Nb₃O₁₀ and Ca₄Nb ₆O₁₉

Thomas I. Draskovic
, Tsinghai Wang
, Camden N. Henderson
, Thomas E. Mallouk

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

10 Scopus citations

Abstract

The structural and electrical properties of the Dion-Jacobson series layer perovskite HCa₂Nb₃O₁₀ were investigated. Within the intermediate temperature range (200-475 C), the compound undergoes topochemical dehydration to Ca₄Nb₆O₁₉ and, under reducing atmospheres, partial reduction of Nb(V) to Nb(IV). These changes occur upon heating and are not reversed on cooling. Analysis of impedance data shows that the conductivity of Ca₄Nb₆O₁₉ is predominantly electronic under reducing atmospheres, consistent with the behavior of other structurally related mixed-valence layered niobates.

Original language	English (US)
Pages (from-to)	4576-4580
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	9
DOIs	https://doi.org/10.1016/j.ijhydene.2014.01.017
State	Published - Mar 18 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

Access to Document

10.1016/j.ijhydene.2014.01.017

Cite this

@article{85f96ee8dc37482b9eab503c603a19be,

title = "Protonic and electronic conductivity of the layered perovskite oxides HCa2Nb3O10 and Ca4Nb 6O19",

abstract = "The structural and electrical properties of the Dion-Jacobson series layer perovskite HCa2Nb3O10 were investigated. Within the intermediate temperature range (200-475 C), the compound undergoes topochemical dehydration to Ca4Nb6O19 and, under reducing atmospheres, partial reduction of Nb(V) to Nb(IV). These changes occur upon heating and are not reversed on cooling. Analysis of impedance data shows that the conductivity of Ca4Nb6O19 is predominantly electronic under reducing atmospheres, consistent with the behavior of other structurally related mixed-valence layered niobates.",

author = "Draskovic, \{Thomas I.\} and Tsinghai Wang and Henderson, \{Camden N.\} and Mallouk, \{Thomas E.\}",

note = "Funding Information: This work was supported by the National Science Foundation under grant CHE-0910513 . ",

year = "2014",

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day = "18",

doi = "10.1016/j.ijhydene.2014.01.017",

language = "English (US)",

volume = "39",

pages = "4576--4580",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Protonic and electronic conductivity of the layered perovskite oxides HCa2Nb3O10 and Ca4Nb 6O19

AU - Draskovic, Thomas I.

AU - Wang, Tsinghai

AU - Henderson, Camden N.

AU - Mallouk, Thomas E.

N1 - Funding Information: This work was supported by the National Science Foundation under grant CHE-0910513 .

PY - 2014/3/18

Y1 - 2014/3/18

N2 - The structural and electrical properties of the Dion-Jacobson series layer perovskite HCa2Nb3O10 were investigated. Within the intermediate temperature range (200-475 C), the compound undergoes topochemical dehydration to Ca4Nb6O19 and, under reducing atmospheres, partial reduction of Nb(V) to Nb(IV). These changes occur upon heating and are not reversed on cooling. Analysis of impedance data shows that the conductivity of Ca4Nb6O19 is predominantly electronic under reducing atmospheres, consistent with the behavior of other structurally related mixed-valence layered niobates.

AB - The structural and electrical properties of the Dion-Jacobson series layer perovskite HCa2Nb3O10 were investigated. Within the intermediate temperature range (200-475 C), the compound undergoes topochemical dehydration to Ca4Nb6O19 and, under reducing atmospheres, partial reduction of Nb(V) to Nb(IV). These changes occur upon heating and are not reversed on cooling. Analysis of impedance data shows that the conductivity of Ca4Nb6O19 is predominantly electronic under reducing atmospheres, consistent with the behavior of other structurally related mixed-valence layered niobates.

UR - https://www.scopus.com/pages/publications/84895453269

UR - https://www.scopus.com/pages/publications/84895453269#tab=citedBy

U2 - 10.1016/j.ijhydene.2014.01.017

DO - 10.1016/j.ijhydene.2014.01.017

M3 - Article

AN - SCOPUS:84895453269

SN - 0360-3199

VL - 39

SP - 4576

EP - 4580

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 9

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