Characterization of lithium tetrafluoroborate and N-methylacetamide complex as electric and ionic conductors

2016 ◽  
Vol 33 (4) ◽  
pp. 1441-1446
Author(s):  
Byungsun Bang ◽  
Taewhan Yeu
Keyword(s):  
Ionic Conductors ◽  
Lithium Tetrafluoroborate

Powder diffraction study of arsenic-substituted nasicon structures MeZr2As(3−x)PxO12 (Me=Na+, K+)

1998 ◽  
Vol 13 (4) ◽  
pp. 227-231 ◽  
Author(s):  
D. Mazza ◽  
M. Lucco-Borlera ◽  
S. Ronchetti
Keyword(s):  
Single Crystal ◽  
Diffraction Study ◽  
Key Words ◽  
Powder Diffraction ◽  
Mixed Oxides ◽  
Structural Data ◽  
Nasicon Structure ◽  
Ionic Conductors ◽  
X Ray

Three new mixed oxides having the nasicon structure and containing arsenic(V) as tetrahedral ion were prepared and X-ray analyzed. The stoichiometry of the three phases can be expressed by the comprehensive notation MeZr2As(3−x)PxO12 where Me stands for Na+ or K+, x equals to 0 and 1.5 when Me=Na, while x equals to 1.5 when Me=K. For two other compositions of the above series, the powder patterns were calculated on the basis of the structural data from single crystal determinations, thus permitting us to complete the characterization of the solids, with nasicon framework, deriving from MeZr2P3O12 (Me=Na+, K+) by partial (50%) or complete (100%) substitution of As for P.Key words: nasicon, ionic conductors, phosphates, arsenates

Characterization of LiFeCl4 and AgFeCl4 ionic conductors

1982 ◽  
Vol 6 (3) ◽  
pp. 231-236 ◽  
Author(s):  
P PALVADEAU ◽  
J VENIEN ◽  
M SPIESSER ◽  
J ROUXEL
Keyword(s):  
Ionic Conductors

Preparation and characterization of NASICON type Li+ ionic conductors

2012 ◽  
Vol 16 (10) ◽  
pp. 3349-3354 ◽  
Author(s):  
Rayavarapu Prasada Rao ◽  
Chen Maohua ◽  
Stefan Adams
Keyword(s):  
Ionic Conductors ◽  
Nasicon Type

scholarly journals In Situ Atom Probe Deintercalation of Lithium-Manganese-Oxide

2017 ◽  
Vol 23 (2) ◽  
pp. 314-320 ◽  
Author(s):  
Björn Pfeiffer ◽  
Johannes Maier ◽  
Jonas Arlt ◽  
Carsten Nowak
Keyword(s):  
Manganese Oxide ◽  
Chemical Potential ◽  
Methodological Approach ◽  
Ionic Mobility ◽  
Atom Probe ◽  
Lithium Manganese Oxide ◽  
Ionic Conductors ◽  
Lithium Manganese

AbstractAtom probe tomography is routinely used for the characterization of materials microstructures, usually assuming that the microstructure is unaltered by the analysis. When analyzing ionic conductors, however, gradients in the chemical potential and the electric field penetrating dielectric atom probe specimens can cause significant ionic mobility. Although ionic mobility is undesirable when aiming for materials characterization, it offers a strategy to manipulate materials directly in situ in the atom probe. Here, we present experimental results on the analysis of the ionic conductor lithium-manganese-oxide with different atom probe techniques. We demonstrate that, at a temperature of 30 K, characterization of the materials microstructure is possible without measurable Li mobility. Also, we show that at 298 K the material can be deintercalated, in situ in the atom probe, without changing the manganese-oxide host structure. Combining in situ atom probe deintercalation and subsequent conventional characterization, we demonstrate a new methodological approach to study ionic conductors even in early stages of deintercalation.

Synthesis and Characterization of Perovskite-Type Li3yLa1-3y(Nb1-xWx)3O9 Ionic Conductors

2001 ◽  
Vol 216 ◽  
pp. 135-140
Author(s):  
Yoshio Aoyama ◽  
Akira Komeno ◽  
Kenji Toda ◽  
Mineo Sato
Keyword(s):  
Synthesis And Characterization ◽  
Ionic Conductors ◽  
Perovskite Type

Bi2Sr2M'2M”O11.5 [(M' = Nb, Ta) and (M” = Al, Ga)], Synthesis and Characterization of Oxygen-Deficient Aurivillius Phases

1994 ◽  
Vol 369 ◽  
Author(s):  
Kurt R. Kendall ◽  
Carlos J. Navas ◽  
Hans-Conrad Zur Loye
Keyword(s):  
Ionic Conductivities ◽  
Transference Number ◽  
Atmospheric Conditions ◽  
New Materials ◽  
Ionic Conductors ◽  
X Ray Diffraction ◽  
Aurivillius Phases ◽  
Arrhenius Plots ◽  
Transmission Electron

AbstractOxygen-deficient layered bismuth oxides, Bi2Sr2M'2M”O11.5 [(M' = Nb, Ta) and (M” = Al, Ga)] were synthesized. Powder X-ray diffraction and transmission electron microscopy were usedto characterize the new materials' structures. The ionic conductivity was measuredusing impedance spectroscopy which indicated the existence of multiple conductive states in the new oxygen-deficient materials. Arrhenius plots of the conductivity showed discontinuities which were attributed to transitions between different conductive states. At 800ºC, Bi2Sr2Nb2GaO11.5 and Bi2Sr2Nb2A1O1.5, have ionic conductivities of 2.0×10−2 S/cm and 1.2×10−2 S/cm, respectively. Differential thermal analysis showed phase transitions in the oxygen-deficient materials. These transitionsoccurred at temperatures similar to those at which discontinuities were observed in the Arrhenius plots of the conductivity and are attributed to oxygen vacancy order/disorder transitions. The transference number was calculated for some of the samples by measuring both the EMF and the conductivity as a function of oxygen partial pressure. Under atmospheric conditions the new materials are predominantly ionic conductors.

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