This review provides a personal account of career﹍ong efforts, interwoven with the contributions of others, to exploit the [B2]O4 framework of an A[B2]O4 spinel structure for lithium﹊on battery applications, where A = Li, and B is one or more metal cations. The narrative starts at the...
作者: D Mehandjiev,E Zhecheva,S Angelov 展开 摘要: A thermodynamic approach is used to predict the possibility of formation of 3 d-transition metal mixed oxides with spinel structure on the basis of data on the thermodynamic stability of the single oxides. The temperature regions of the ...
Full size image Further evidence of the high sample quality of our Ni0.5Zn0.5Fe2O4ceramic powder was obtained from the microstructural study. From the FE-SEM image (Fig.1b) it could be seen that the powder consists of crystallites larger than 100 μm. The local-crystal structure observation...
Impact of magnetic spinel ferrite content on the structure, morphology, optical, and magneto-dielectric properties of BaTiO 3 materials In this study, the influence of magnetic content of NiFe1.93Dy0.07O4 spinel ferrite on the structural, morphological, optical, and magneto-dielectric prope... Y Sl...
16and it has a variable structure17which will show a change of structure from Li4Mn5O12phase to Li2MnO3phase when the temperature was raised above 700°C18. Therefore this lithium-rich spinel Li4Mn5O12, which has a three-dimensional (3D) interstitial space permiting fast diffusion of ...
The molecular structure of 1 is made of a three-dimensional (3D) anionic network, [Mn2(C2O4)3]n2n–, and tris-chelated cations [Co(bpy)3]2+ occupying the vacancies of the framework. Splitting between the zero-field-cooled (ZFC) and field-cooled (FC) branches of susceptibility below...
Crystals with spinel structure have a 3D vacancy pathway suitable for Li-ions transport. The material under study was LiNi 0.5Mn 1.5O 4 doped with magnesium replacing the nickel. Various samples were synthesized via three different routes: a solid-state method, a modified sol鈥揼el method and ...
(2) In BaCrO, the internal photo-excitation of electrons from the split Cr3d-torbit to Cr3d-eorbit was supposed to play an important role in the photocatalytic Hevolution under visible light irradiation. (orig.) 展开 关键词: Experimental/ barium compounds catalysts crystal structure gallium ...
An overall pattern remains however and is indicative of the crystal structure; "microcrystalline" means a crystalline phase having a crystallite size of 50 A to 1000 A (5×10-9 to 1×10-7 m), and sometimes larger but always less than 10,000 A (1×10-6 m). Such a microscrystalline...
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