CN-mayenite Ca12Al14O32(CN)2: Replacing mobile oxygen ions by cyanide ions
CN-mayenite Ca12Al14O32(CN)2: Replacing mobile oxygen ions by cyanide ions
复制标题
DOI：
10.1016/j.solidstatesciences.2014.09.017
复制
发表时间：
2014-12-01
影响因子：
3.5
通讯作者：
Hoelzel, Markus
中科院分区：
文献类型：
--
作者：
Schmidt, Alexander;Lerch, Martin;Hoelzel, Markus
CN-钙铝石（Ca_（12）Al_（14）O_（32）（CN）（2））由于其特殊的结构特征，是一种很有前途的高温CN-导电材料。它是通过固-气反应制备的。通过原位高温中子衍射，阻抗谱和额外的Hebb-Wagner测量的传输过程进行了研究。Ca_（12）Al_（14）O_（32）（CN）（2）在1173 K（E-a = 4.3 eV）下显示出令人惊讶的高离子电导率，σ = 1.4中心点10（-3）S/cm，可以被认为是具有移动的分子阴离子的新型固体阴离子导体的第一个例子。(C)2014年Elsevier Masson SAS。All rights reserved.
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 solid-gas reaction. The transport processes were investigated by means of in situ high-temperature neutron diffraction, impedance spectroscopy and additional Hebb-Wagner measurements. Diffusion pathways and activation energies were determined additionally by quantum-chemical calculations.Ca12Al14O32(CN)(2) shows a surprisingly high ionic conductivity of sigma = 1.4 center dot 10(-3) S/cm at 1173 K (E-a = 4.3 eV) and can be considered as first example of a new kind of solid anion conductor with a mobile molecular anion. (C) 2014 Elsevier Masson SAS. All rights reserved.