翻訳と辞書 Words near each other ・ Nasib al-Bitar ・ Nasib Arida ・ Nasib Border Crossing ・ Nasib Mukhtarov ・ Nasib Si Labu Labi ・ Nasib Yusifbeyli ・ Nasiba ・ Nasiba Surkiyeva ・ Nasiba Zeynalova ・ Nasibi ・ Nasibi Tahir Babai ・ Nasibo ・ Nasibu ・ Nasibu Mapunda ・ Nasibu Zeamanuel ・ NASICON ・ Nasiczne ・ Nasida Ria ・ Nasiechowice ・ Nasiedle ・ Nasief Morris ・ Nasiegniewo ・ Nasieh ・ Nasielsk ・ Nasielsk Synagogue ・ Nasierowo Dolne ・ Nasierowo Górne ・ Nasierowo-Dziurawieniec ・ Nasif al-Nassar ・ Nasif al-Yaziji Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク NASICON ： ウィキペディア英語版 NASICON NASICON is an acronym for sodium (Na) Super Ionic CONductor, which usually refers to a family of solids with the chemical formula Na1+xZr2SixP3-xO12, 0 < x < 3. In a broader sense, it is also used for similar compounds where Na, Zr and/or Si are replaced by isovalent elements. NASICON compounds have high ionic conductivities, on the order of 10−3 S/cm, which rival those of liquid electrolytes. They are caused by hopping of Na ions among interstitial sites of the NASICON crystal lattice.〔 ==Properties== The crystal structure of NASICON compounds was characterized in 1968. It is a covalent network consisting of ZrO6 octahedra and PO4/SiO4 tetrahedra that share common corners. Sodium ions are located at two types of interstitial positions. They move among those sites through bottlenecks, whose size, and thus the NASICON electrical conductivity, depends on the NASICON composition, on the site occupancy,〔 and on the oxygen content in the surrounding atmosphere. The conductivity decreases for x < 2 or when all Si is substituted for P in the crystal lattice (and vice versa); it can be increased by adding a rare-earth compound to NASICON, such as yttria.〔 NASICON materials can be prepared as single crystals, polycrystalline ceramic compacts, thin films or as a bulk glass called NASIGLAS. Most of them, except NASIGLAS and phosphorus-free Na4Zr2Si3O12, react with molten sodium at 300 °C, and therefore are unsuitable for electric batteries that use sodium as an electrode.〔 However, a NASICON membrane is being considered for a sodium-sulfur battery where the sodium stays solid. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「NASICON」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.