Les intercalaires Ax Ti S2 et Ax Zr S2. Structure et liaisons. (A = Li, Na, K, Rb, Cs)

Leblanc-Soreau, A.; Danot, M.; Trichet, Léa; Rouxel, J.

doi:10.1016/0025-5408(74)90198-6

Cited by 120 publications

(26 citation statements)

References 5 publications

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“…1.5 V) and P3 + O1 (ca. 2.2 V) [19]. However, a detailed examination on the voltage profile reveals that the voltage plateaus in Na x TiS 2 are not as flat as in Na x VS 2 and actually include multiple steps.…”

Section: Structure Of As-synthesized Samplesmentioning

confidence: 96%

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Comparative electrochemical sodium insertion/extraction behavior in layered NaxVS2 and NaxTiS2

Lee

Sahgong

Johnson

et al. 2014

Electrochimica Acta

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a b s t r a c tThis study investigates the electrochemical sodium insertion/extraction of Na x VS 2 , and Na x TiS 2 in the voltage range where either intercalation (0.2 ≤ x ≤ 1) or displacement-conversion reaction (x > 1) occurs. Both Na x VS 2 and Na x TiS 2 showed good reversible capacities, as high as ∼160 mAh/g at an average voltage of ∼1.9 V vs. Na in the region for the intercalation reaction (0.2 ≤ x ≤ 1). When sodium (Na) insertion was forced further to the x > 1 composition, Na x VS 2 exhibited the direct displacement-conversion reaction at 0.3 V vs. Na without further Na intercalation, which contrasted with the wider lithium intercalation range of 0 < x ≤ 2 for Li x VS 2 . The displacement-conversion reaction for Na x VS 2 (x > 1) was reversible with a specific capacity of above 200 mAh/g up to 15 cycles, but the displacement reaction for Na x TiS 2 (x > 1) was not observed.

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Section: Structure Of As-synthesized Samplesmentioning

confidence: 96%

“…Various phases of layered Na x MS 2 have been reported according to the types of sulfur packing and the Na ion coordination, whether octahedral (O) or trigonal prismatic (P) [19,20]. Fig.…”

Section: Structure Of As-synthesized Samplesmentioning

confidence: 99%

Comparative electrochemical sodium insertion/extraction behavior in layered NaxVS2 and NaxTiS2

Lee

Sahgong

Johnson

et al. 2014

Electrochimica Acta

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“…Bonding between the alkali atoms A and the chalcogenide layers in the resulting compounds Aa;MX2 is essentially of ionic character 2 to be carried out in solvents which are rather stable towards cathodic decomposition. In this communication we report on the electrochemical reduction of M0S2 and WS2 in dimethylsulfoxide (DMSO) and 1,2-dimethoxyethane (DME) electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Defined Intercalation Stages from Cathodic Reduction of MoS₂ in Organic Electrolytes

Besenhard¹,

Meyer

Schöllhorn

1976

Zeitschrift Für Naturforschung B

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Molybdenum, Intercalation Compounds, Cathodic Reduction, Organic ElectrolytesCathodic reduction of M0S2 in DMSO electrolytes containing alkali cations A+ results in the formation of defined ternary phases A+o.i25 (DMSO) y [MoS2] 0125_ with highly mobile solvated interlayer cations. Reduction of M0S2 in DME electrolytes yields similar products. Basal spacings are dependant on solvent type and on ionic radius of A+. Further reduction of these compounds is associated with irreversible processes.

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“…All prisms are energetically equivalent, as a result the alkali ions are statistically distributed in them. As in chalcogenides this structural type is always obtained for phases with high vacancy content, so that the repulsion between opposite anions of the prisms is limited by larger distance of the adjacent sheets [6,16].…”

Section: The Abbcca (P3) Oxygen Packingmentioning

confidence: 85%

Trigonal Prismatic or Octahedral Surrounding in Sheet Oxides ?

Delmas

Braconnier

Fouassier

et al. 1981

Zeitschrift Für Naturforschung B

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Abstract Layer Oxides, Intercalate, Trigonal Prismatic of Octahedral Surrounding According to the oxygen packing two types of alkali ion surroundings (octahedral or trigonal prismatic) are possible in the AxMO2 sheet oxides or the related A2MO3 compounds. The stability of both environments is discussed from the geometrical and electrostatic view points. Structural transitions to metastable forms can be induced by high pressure, intercalation, desintercalation or exchange reactions. The possibility of room temperature transformations can be anticipated from the relationships between the various oxygen packings.

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Les intercalaires Ax Ti S2 et Ax Zr S2. Structure et liaisons. (A = Li, Na, K, Rb, Cs)

Cited by 120 publications

References 5 publications

Comparative electrochemical sodium insertion/extraction behavior in layered NaxVS2 and NaxTiS2

Comparative electrochemical sodium insertion/extraction behavior in layered NaxVS2 and NaxTiS2

Defined Intercalation Stages from Cathodic Reduction of MoS₂ in Organic Electrolytes

Trigonal Prismatic or Octahedral Surrounding in Sheet Oxides ?

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Les intercalaires Ax Ti S2 et Ax Zr S2. Structure et liaisons. (A = Li, Na, K, Rb, Cs)

Cited by 120 publications

References 5 publications

Comparative electrochemical sodium insertion/extraction behavior in layered NaxVS2 and NaxTiS2

Comparative electrochemical sodium insertion/extraction behavior in layered NaxVS2 and NaxTiS2

Defined Intercalation Stages from Cathodic Reduction of MoS2 in Organic Electrolytes

Trigonal Prismatic or Octahedral Surrounding in Sheet Oxides ?

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Product

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Defined Intercalation Stages from Cathodic Reduction of MoS₂ in Organic Electrolytes