Crystal growth, thermal, optical, magnetic and electrochemical properties of Mo2Ta2O11

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-05-01 DOI:10.1016/j.solidstatesciences.2025.107951

Md Abdullah Al Muhit , Alevtina A. Maksimova , Sean C. Wechsler, Habiba Binte Kashem, Gopabandhu Panigrahi, Gregory Morrison, Morgan Stefik, Hans-Conrad zur Loye

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引用次数: 0

Abstract

Single crystals of the transition metal oxide Mo₂Ta₂O₁₁ were grown for the first time using molten flux synthesis. The compound crystalizes in the trigonal space group R

\overline{3} m

(no. 166) with lattice parameters a = b = 5.6267(1) Å and c = 25.1424(6) Å and a unit cell volume of 689.36(3) Å³. The structure of Mo₂Ta₂O₁₁ is composed of alternating layers of TaO₆ octahedra and MoO₄ tetrahedra connected via corner-sharing. CaH₂ was used to achieve a partial low temperature reduction of Mo₂Ta₂O₁₁. The electrochemical lithiation of polycrystalline Mo₂Ta₂O₁₁ was also investigated for the first time. Mo₂Ta₂O₁₁ underwent a structural rearrangement while maintaining a reversible capacity of ∼150 mAh/g.

Abstract Image

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Mo2Ta2O11的晶体生长、热、光、磁和电化学性能

本文首次采用熔剂合成方法制备了过渡金属氧化物Mo2Ta2O11的单晶。化合物在三角空间群R 3中结晶，m (no。晶格参数a = b = 5.6267(1) Å， c = 25.1424(6) Å，单元胞体积为689.36(3)Å3。Mo2Ta2O11的结构是由ta6八面体和mo4四面体通过共享角连接而形成的交替层组成。用CaH2实现了Mo2Ta2O11的部分低温还原。本文还首次研究了多晶Mo2Ta2O11的电化学锂化过程。Mo2Ta2O11进行了结构重排，同时保持了约150 mAh/g的可逆容量。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.