Selective encapsulation of lithium ion by the new azacage 5,12,17,trimethyl-1,5,9,12,17-penta-azabicyclo[7.5.5]nonadecane (L). Thermodynamic studies and crystal structures of the lithium complex [LiL][BPH4] and of the monoprotonated salt [HL][Cl]·(H2O)3

1989 ◽  
pp. 701-703 ◽  
Author(s):  
Andrea Bencini ◽  
Antonio Bianchi ◽  
Mario Ciampolini ◽  
Enrique Garcia-España ◽  
Paolo Dapporto ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Lithium Ion ◽  
Thermodynamic Studies ◽  
Lithium Complex

Melamine–terephthalaldehyde–lithium complex: a porous organic network based single ion electrolyte for lithium ion batteries

2015 ◽  
Vol 3 (9) ◽  
pp. 5132-5139 ◽  
Author(s):  
Rupesh Rohan ◽  
Kapil Pareek ◽  
Weiwei Cai ◽  
Yunfeng Zhang ◽  
Guodong Xu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Lithium Complex ◽  
Ion Conducting

Melamine based porous organic frameworks as a single ion conducting electrolyte for lithium ion batteries.

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.

Sign in / Sign up

Export Citation Format

Share Document