无序十氢-closo-十二硼酸钠中的超常超离子电导率。
Exceptional superionic conductivity in disordered sodium decahydro-closo-decaborate.
机构信息
NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899-6102, USA.
出版信息
Adv Mater. 2014 Dec 3;26(45):7622-6. doi: 10.1002/adma.201403157. Epub 2014 Oct 13.
Na2 B10 H10 exhibits exceptional superionic conductivity above ca. 360 K (e.g., ca. 0.01 S cm(-1) at 383 K) concomitant with its transition from an ordered monoclinic structure to a face-centered-cubic arrangement of orientationally disordered B10 H10 (2-) anions harboring a vacancy-rich Na(+) cation sublattice. This discovery represents a major advancement for solid-state Na(+) fast-ion conduction at technologically relevant device temperatures.
硼氢化钠在高于约 360 K 的温度下表现出异常的超离子电导率（例如，在 383 K 时约为 0.01 S cm(-1)），同时其从有序单斜结构转变为面心立方排列的各向同性无序 B10 H10(2-)阴离子排列，其中含有富含空位的 Na(+)阳离子亚晶格。这一发现代表了在技术相关的器件温度下固态 Na(+)快速离子传导的重大进展。
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