A new Li-conductor based on HTSC Pb2Sr2Y1−xCaxCu3O8+δ☆

Saint-Mard, Ph.; M, Thibaut; Várez, A.; Hetherington, C. J. D.; Morán, E.; Alario-Franco, M.A.; León, Carlos; Santamarı́a, J.

doi:10.1016/0167-2738(93)90411-u

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…The XRD patterns of La 0.55 Li 0.35 TiO 3 powders are in agreement with the previously reported XRD data of the ceramic with a similar composition. 3 The Au-coated La 0.55 Li 0.35 TiO 3 sheet which was sintered at 1300°C for 4 h has the same phase as the La 0.55 Li 0.35 TiO 3 powder calcined at 1100°C as shown in Fig. 3.…”

Section: Resultsmentioning

confidence: 99%

In Situ Ionic/Electric Conductivity Measurement of La[sub 0.55]Li[sub 0.35]TiO[sub 3] Ceramic at Different Li Insertion Levels

Wang

Patil

Appleby

et al. 2004

J. Electrochem. Soc.

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The electrical conductivities of solid La 0.55 Li 0.35 TiO 3 electrolytes at different Li intercalation levels were measured, in situ, using a special cell and electrode design. The relative changes in electrical conductivities of La 0.55 Li 0.35 TiO 3 at different Li insertion levels in liquid electrolytes were monitored by the voltage across the La 0.55 Li 0.35ϩx TiO 3 powder disk electrode sandwiched between two nickel screens and charged only on one nickel screen. The real electrical conductivities of the La 0.55 Li 0.35ϩx TiO 3 ceramic at different Li insertion levels x without influence of high-ion-conductivity liquid electrolytes was measured by electrochemical impedance spectroscopy using sintered La 0.55 Li 0.35ϩx TiO 3 disk electrodes with Au coating on both sides. Lithium was electrochemically inserted into La 0.55 Li 0.35 TiO 3 when the Au coated disk electrodes were immersed into liquid electrolytes with the cell inverted. The impedances of La 0.55 Li 0.35ϩx TiO 3 electrodes were then measured with the disk electrode suspended above the liquid electrolyte with the cell upright.

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Section: Resultsmentioning

confidence: 99%

In Situ Ionic/Electric Conductivity Measurement of La[sub 0.55]Li[sub 0.35]TiO[sub 3] Ceramic at Different Li Insertion Levels

Wang

Patil

Appleby

et al. 2004

J. Electrochem. Soc.

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“…The XRD patterns of the sintered La 0.55 Li 0.35 TiO 3 powders are in agreement with the previously reported XRD data of a ceramic with a similar composition. 12 La 0.55 Li 0.35 TiO 3 powder disks were cold-pressed and sintered at 1325°C for 2 h. Their conductivity determined by EIS was ca. 9.1 ϫ 10 Ϫ4 S-cm Ϫ1 at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Solvent-Free Composite PEO-Ceramic Fiber/Mat Electrolytes for Lithium Secondary Cells

Wang

Zhang

Appleby

2005

J. Electrochem. Soc.

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Solvent-free composite poly͑ethylene oxide͒ ͑PEO͒-ceramic fiber or mat electrolytes with high ionic conductivity and good interfacial stability have been developed using high-ionic-conductivity La 0.55 Li 0.35 TiO 3 fibers and mats. The conducting ceramic fibers can penetrate the cross section of the electrolyte film to provide long-range lithium-ion transfer channels, thus producing composite electrolytes with high conductivity. In this work, a maximum room-temperature conductivity of 5.0 ϫ 10 Ϫ4 S cm Ϫ1 was achieved for 20 wt % La 0.55 Li 0.35 TiO 3 fiber in a PEO-LiN͑SO 2 CF 2 CF 3 ) 2 mixture containing 12.5 wt % Li ϩ in PEO. The maximum transference number obtained was 0.7. The ceramic fibers in this composite electrolyte are coated by a very thin PEO layer, which is sufficient to provide good interfacial stability with lithium-ion and lithium-metal anodes.

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“…Evidently, the number of lattice‐Li + and the number of vacancies plays a crucial role in ionic conduction, so fine tuning the parameter x has been a focus of research. [ 125–127 ] A further improvement could be achieved by widening the diffusion channel through Sr 2 + ‐doping on the A‐site. [ 128 ] Additionally, it has been found that depending on the synthesis route and operating temperature poorly conducting La‐rich layers are formed in the crystal structure constraining the Li + diffusion to two dimensions.…”

Section: Materials Classesmentioning

confidence: 99%

Ion Mobility in Crystalline Battery Materials

Sotoudeh,

Baumgart,

Dillenz

et al. 2023

Advanced Energy Materials

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Ion mobility in electrolytes and electrodes is an important performance parameter in electrochemical devices, particularly in batteries. In this review, the authors concentrate on the charge carrier mobility in crystalline battery materials where the diffusion basically corresponds to hopping processes between lattice sites. However, in spite of the seeming simplicity of the migration process in crystalline materials, the factors governing mobility in these materials are still debated. There are well‐accepted factors contributing to the ion mobility such as the size and the charge of the ions, but they are not sufficient to yield a complete picture of ion mobility. In this review, possible factors influencing ion mobility in crystalline battery materials are critically discussed. To gain insights into these factors, chemical trends in batteries, both as far as the charge carriers as well as the host materials are concerned, are discussed. Furthermore, fundamental questions, for example, about the nature of the migrating charge carriers, are also addressed.

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A new Li-conductor based on HTSC Pb2Sr2Y1−xCaxCu3O8+δ☆

Cited by 4 publications

References 8 publications

In Situ Ionic/Electric Conductivity Measurement of La[sub 0.55]Li[sub 0.35]TiO[sub 3] Ceramic at Different Li Insertion Levels

In Situ Ionic/Electric Conductivity Measurement of La[sub 0.55]Li[sub 0.35]TiO[sub 3] Ceramic at Different Li Insertion Levels

Solvent-Free Composite PEO-Ceramic Fiber/Mat Electrolytes for Lithium Secondary Cells

Ion Mobility in Crystalline Battery Materials

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