CN-mayenite Ca12Al14O32(CN)2 ions: replacing mobile oxygen ions by cyanide

Alexander Schmidt; Martin  Lerch; Jens-Peter Eufinger; Jürgen Janek; Raimund Dolle; Hans-Dieter Wiemhofer; Ionut Tranca; Mazharul M. Islam; Thomas Bredow; Hans Boysen; Markus Hoelzel

doi:10.1016/j.solidstatesciences.2014.09.017

CN-mayenite Ca12Al14O32(CN)2 ions: replacing mobile oxygen ions by cyanide

Alexander Schmidt , Martin Lerch (Corresponding author), Jens-Peter Eufinger, Jürgen Janek, Raimund Dolle, Hans-Dieter Wiemhofer, Ionut Tranca, Mazharul M. Islam, Thomas Bredow, Hans Boysen, Markus Hoelzel

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

18 Citations (Scopus)

Abstract

CN-mayenite (Ca12Al14O32(CN)2) is a promising candidate for high-temperature CN- conductivity in a solid due to its special structural features. It was prepared by a solidegas reaction. The transport processes were investigated by means of in situ high-temperature neutron diffraction, impedance spectroscopy and additional HebbeWagner measurements. Diffusion pathways and activation energies were determined additionally by quantum-chemical calculations.
Ca12Al14O32(CN)2 shows a surprisingly high ionic conductivity of s = 1.4∙10^-3 S/cm at 1173 K (Ea =4.3 eV) and can be considered as first example of a new kind of solid anion conductor with a mobile molecular anion.

Original language	English
Pages (from-to)	69-78
Number of pages	10
Journal	Solid State Sciences
Volume	38
DOIs	https://doi.org/10.1016/j.solidstatesciences.2014.09.017
Publication status	Published - 30 Sept 2014
Externally published	Yes

Keywords

Mayenite

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10.1016/j.solidstatesciences.2014.09.017

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title = "CN-mayenite Ca12Al14O32(CN)2 ions: replacing mobile oxygen ions by cyanide ",

abstract = "CN-mayenite (Ca12Al14O32(CN)2) is a promising candidate for high-temperature CN- conductivity in a solid due to its special structural features. It was prepared by a solidegas reaction. The transport processes were investigated by means of in situ high-temperature neutron diffraction, impedance spectroscopy and additional HebbeWagner measurements. Diffusion pathways and activation energies were determined additionally by quantum-chemical calculations.Ca12Al14O32(CN)2 shows a surprisingly high ionic conductivity of s = 1.4∙10^-3 S/cm at 1173 K (Ea =4.3 eV) and can be considered as first example of a new kind of solid anion conductor with a mobile molecular anion.",

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author = "Alexander Schmidt and Martin Lerch and Jens-Peter Eufinger and J{\"u}rgen Janek and Raimund Dolle and Hans-Dieter Wiemhofer and Ionut Tranca and Islam, {Mazharul M.} and Thomas Bredow and Hans Boysen and Markus Hoelzel",

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doi = "10.1016/j.solidstatesciences.2014.09.017",

language = "English",

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TY - JOUR

T1 - CN-mayenite Ca12Al14O32(CN)2 ions

T2 - replacing mobile oxygen ions by cyanide

AU - Schmidt , Alexander

AU - Lerch, Martin

AU - Eufinger, Jens-Peter

AU - Janek, Jürgen

AU - Dolle, Raimund

AU - Wiemhofer, Hans-Dieter

AU - Tranca, Ionut

AU - Islam, Mazharul M.

AU - Bredow, Thomas

AU - Boysen, Hans

AU - Hoelzel, Markus

PY - 2014/9/30

Y1 - 2014/9/30

N2 - CN-mayenite (Ca12Al14O32(CN)2) is a promising candidate for high-temperature CN- conductivity in a solid due to its special structural features. It was prepared by a solidegas reaction. The transport processes were investigated by means of in situ high-temperature neutron diffraction, impedance spectroscopy and additional HebbeWagner measurements. Diffusion pathways and activation energies were determined additionally by quantum-chemical calculations.Ca12Al14O32(CN)2 shows a surprisingly high ionic conductivity of s = 1.4∙10^-3 S/cm at 1173 K (Ea =4.3 eV) and can be considered as first example of a new kind of solid anion conductor with a mobile molecular anion.

AB - CN-mayenite (Ca12Al14O32(CN)2) is a promising candidate for high-temperature CN- conductivity in a solid due to its special structural features. It was prepared by a solidegas reaction. The transport processes were investigated by means of in situ high-temperature neutron diffraction, impedance spectroscopy and additional HebbeWagner measurements. Diffusion pathways and activation energies were determined additionally by quantum-chemical calculations.Ca12Al14O32(CN)2 shows a surprisingly high ionic conductivity of s = 1.4∙10^-3 S/cm at 1173 K (Ea =4.3 eV) and can be considered as first example of a new kind of solid anion conductor with a mobile molecular anion.

KW - Mayenite

U2 - 10.1016/j.solidstatesciences.2014.09.017

DO - 10.1016/j.solidstatesciences.2014.09.017

M3 - Article

SN - 1293-2558

VL - 38

SP - 69

EP - 78

JO - Solid State Sciences

JF - Solid State Sciences

ER -

CN-mayenite Ca12Al14O32(CN)2 ions: replacing mobile oxygen ions by cyanide

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