Dicyclohexylamides as ionophores for li-selective electrodes. Crystal structures of a triamide ligand and its complex with lithium ion

1994 ◽  
Vol 20 (1) ◽  
pp. 53-71 ◽  
Author(s):  
Maria Bocheńska ◽  
Maria Gdaniec
Keyword(s):  
Crystal Structures ◽  
Lithium Ion

scholarly journals Atomic resolution imaging of cation ordering in niobium–tungsten complex oxides

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Sumio Iijima ◽  
Wenhui Yang ◽  
Syo Matsumura ◽  
Ichiro Ohnishi
Keyword(s):  
Crystal Structures ◽  
Tungsten Bronze ◽  
Lithium Ion ◽  
Atomic Resolution ◽  
Energy Storage Materials ◽  
Cation Ordering ◽  
Tetragonal Tungsten Bronze ◽  
X Ray ◽  
Scanning Transmission ◽  
Complex Metal Oxide

AbstractEnergy dispersive X-ray emission imaging at atomic resolution is a powerful tool to solve order–disorder problems in complex metal oxide crystals, supplementing conventional X-ray or neutron diffraction. Here, we use this method, based on scanning transmission electron microscopy, to investigate cation ordering in ternary metal oxides 4Nb2O5·9WO3 and 2Nb2O5·7WO3, which have recently attracted attention as energy storage materials in lithium-ion batteries. Their crystal structures are a tetragonal tungsten bronze-type and its hybrid with a ReO3-type ‘block structure’, respectively. Our study reveals the presence of chemical ordering of metal ions in these materials, which have previously been assumed to be solid-solutions. In particular, we show that the two types of cations, Nb and W, are well ordered in their lattices, and that the Nb ions tend to occupy one third of the pentagonal channel sites. These results demonstrate that atomic resolution X-ray emission imaging is an effective alternative approach for the study of locally ordered crystal structures.

scholarly journals High-pressure study of Li[Li1/3Ti5/3]O4 spinel

2018 ◽  
Vol 5 (8) ◽  
pp. 1941-1949 ◽  
Author(s):  
Kazuhiko Mukai ◽  
Ikuya Yamada
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Lithium Ion Batteries ◽  
Crystal Structures ◽  
Structural Phase Transition ◽  
Electrode Materials ◽  
Structural Phase ◽  
Lithium Ion ◽  
High Pressure Study ◽  
Lithium Titanium

Crystal structures and electrochemical reactivities of high-pressure forms of the lithium titanium spinel Li[Li1/3Ti5/3]O4 (LTO) were investigated under a pressure of 12 GPa to elucidate its structural phase transition from spinel to post-spinel and to obtain a wide variety of electrode materials for lithium-ion batteries.

Lithium-ion storage in molybdenum phosphides with different crystal structures

2020 ◽  
Vol 49 (7) ◽  
pp. 2225-2233 ◽  
Author(s):  
Xiaozhe Jin ◽  
Ruixue Tian ◽  
Aimin Wu ◽  
Yadan Xiao ◽  
Xufeng Dong ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Lithium Ion ◽  
Evaporation Method ◽  
Ion Storage ◽  
Li Ion

MoP2 and MoP nanoparticles synthesized by a plasma evaporation method combined with phosphorization exhibit different electrochemical Li-ion storage mechanisms.

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