Humidity-sensitive electrical conductivity in Ca12 Al14-x Six O32 Cl2+x (0≤x≤3.4) ceramics

Katsuro Hayashi; Hiroki Muramatsu; Satoru Matsuishi; Toshio Kamiya; Hideo Hosono

doi:10.1149/1.3032908

Humidity-sensitive electrical conductivity in Ca12 Al14-x Six O32 Cl2+x (0≤x≤3.4) ceramics

Katsuro Hayashi, Hiroki Muramatsu, Satoru Matsuishi, Toshio Kamiya, Hideo Hosono

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

11 Citations (Scopus)

Abstract

The effect of humidity on the electrical conductivity in porous and dense ceramics of Ca12 Al14-x Six O32 Cl2+x (x=0, 1.7, 3.4) with a mayenite structure was examined at room temperature. Surface ionic conductivity was enhanced by increasing the humidity. The sample with x=3.4, which had a porosity of 30%, exhibited the largest conductivity change of about 4 orders of magnitude over the relative humidity range of 10-90% at 25°C. The presence of Cl- ions on the surface most likely enhances the formation of hydronium ions which are responsible for proton transfer in physisorbed water layers.

Original language	English
Pages (from-to)	J11-J13
Journal	Electrochemical and Solid-State Letters
Volume	12
Issue number	2
DOIs	https://doi.org/10.1149/1.3032908
Publication status	Published - 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

Access to Document

10.1149/1.3032908

Cite this

@article{11e7a661bd554493bb25002afeb083b2,

title = "Humidity-sensitive electrical conductivity in Ca12 Al14-x Six O32 Cl2+x (0≤x≤3.4) ceramics",

abstract = "The effect of humidity on the electrical conductivity in porous and dense ceramics of Ca12 Al14-x Six O32 Cl2+x (x=0, 1.7, 3.4) with a mayenite structure was examined at room temperature. Surface ionic conductivity was enhanced by increasing the humidity. The sample with x=3.4, which had a porosity of 30%, exhibited the largest conductivity change of about 4 orders of magnitude over the relative humidity range of 10-90% at 25°C. The presence of Cl- ions on the surface most likely enhances the formation of hydronium ions which are responsible for proton transfer in physisorbed water layers.",

author = "Katsuro Hayashi and Hiroki Muramatsu and Satoru Matsuishi and Toshio Kamiya and Hideo Hosono",

year = "2009",

doi = "10.1149/1.3032908",

language = "English",

volume = "12",

pages = "J11--J13",

journal = "Electrochemical and Solid-State Letters",

issn = "1099-0062",

publisher = "Electrochemical Society, Inc.",

number = "2",

}

TY - JOUR

T1 - Humidity-sensitive electrical conductivity in Ca12 Al14-x Six O32 Cl2+x (0≤x≤3.4) ceramics

AU - Hayashi, Katsuro

AU - Muramatsu, Hiroki

AU - Matsuishi, Satoru

AU - Kamiya, Toshio

AU - Hosono, Hideo

PY - 2009

Y1 - 2009

N2 - The effect of humidity on the electrical conductivity in porous and dense ceramics of Ca12 Al14-x Six O32 Cl2+x (x=0, 1.7, 3.4) with a mayenite structure was examined at room temperature. Surface ionic conductivity was enhanced by increasing the humidity. The sample with x=3.4, which had a porosity of 30%, exhibited the largest conductivity change of about 4 orders of magnitude over the relative humidity range of 10-90% at 25°C. The presence of Cl- ions on the surface most likely enhances the formation of hydronium ions which are responsible for proton transfer in physisorbed water layers.

AB - The effect of humidity on the electrical conductivity in porous and dense ceramics of Ca12 Al14-x Six O32 Cl2+x (x=0, 1.7, 3.4) with a mayenite structure was examined at room temperature. Surface ionic conductivity was enhanced by increasing the humidity. The sample with x=3.4, which had a porosity of 30%, exhibited the largest conductivity change of about 4 orders of magnitude over the relative humidity range of 10-90% at 25°C. The presence of Cl- ions on the surface most likely enhances the formation of hydronium ions which are responsible for proton transfer in physisorbed water layers.

UR - http://www.scopus.com/inward/record.url?scp=57649215281&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57649215281&partnerID=8YFLogxK

U2 - 10.1149/1.3032908

DO - 10.1149/1.3032908

M3 - Article

AN - SCOPUS:57649215281

SN - 1099-0062

VL - 12

SP - J11-J13

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 2

ER -

Humidity-sensitive electrical conductivity in Ca12 Al14-x Six O32 Cl2+x (0≤x≤3.4) ceramics

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this