An investigation of lithium transport properties in V6O13 single crystals

Spurdens, P.C.; Steele, B.C.H.

doi:10.1016/0167-2738(86)90206-7

Cited by 26 publications

(6 citation statements)

References 19 publications

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“…This clearly demonstrates the predominance of the electronic conduction in Li=V205 bronzes. Hence, the calculated lithium transference number tLi+ in these materials, appears to be very small (10 -3.5 < t~+ < 10 =4~) which agrees well with results already obtained on oxides of similar structures V6Oz~ ( 21) and V~O8 (20)(21)(22).…”

Section: Vm DXsupporting

confidence: 89%

Kinetic Study of the Lithium Electroinsertion in V 2 O 5 by Impedance Spectroscopy

Farcy¹,

Messina²,

Périchon³

1990

J. Electrochem. Soc.

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The kinetics of the lithium electroinsertion in vanadium pentoxide was studied vs. Li=V=O5 composition bronzes formed during the two first processes (0 < x < 1), by means of complex impedance spectroscopy between 104 and 10 -3 Hz at 20 ~ and 50~ in 1M LiC104/propylene carbonate solutions. The interfacial charge transfer process is found to be independent ofx. At 20~ the exchange current density is equal to 1.3 _+ 0.5 10 -4 A/cm 2 and the chemical coefficient diffusion, DLi , varies between 10 -9 and 10 -11 cm 2 s -1, with a minimum value for x ~ 0.25. The partial conductivity CrLi of lithium in V205 is found to vary betwee_n 10 -6 and 10 -7 ~-1 cm-~. The E)5i and r values at 50~ are five to six times greater than those at 20~ The dependence of D~ on the composition of the Li=V205 bronzes composition was correlated with structural and thermodynamic data already reported in the literature.

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Section: Vm DXsupporting

confidence: 89%

Kinetic Study of the Lithium Electroinsertion in V 2 O 5 by Impedance Spectroscopy

Farcy¹,

Messina²,

Périchon³

1990

J. Electrochem. Soc.

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“…Such a result could be interpreted in the light of single phase formation. A similar result was obtained for Li,V,O, bronze [14]. One can propose the formation of solid solution all over the range of x.…”

Section: Resultssupporting

confidence: 84%

Further chemico-physical investigations on LixV2O5 bronze polycrystals

Sekkina

1994

Phys. Stat. Sol. (a)

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“…The enthalpy potential of this material has not been measured. However, previous studies of related lithium vanadium oxides 27,28 have shown behavior similar to that of the lithium manganese oxide spinel. 9 We assume a value of ‫ץ‬H ¯/‫ץ‬c ϭ 10 J m 3 /mol 2 for lithium vanadium oxide in order to calculate the value of heat of mixing within the particles of the insertion electrode given in Table III.…”

Section: Comparison Of the Magnitudes Of The Components Of Heat Of Mi...mentioning

confidence: 83%

Thermal Modeling of Porous Insertion Electrodes

Thomas

Newman

2003

J. Electrochem. Soc.

312

287

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Isothermal calorimetry was performed on Li͉LiPF 6 in ethylene carbonate:dimethyl carbonate͉LiAl 0.2 Mn 1.8 O 4Ϫ␦ F 0.2 cells. The measured rate of heat generation varied substantially with time. To understand why, we investigated the entropy, irreversible resistance, and heats of mixing. Two methods for computing the heat of mixing, one computational and one analytic, are derived. We demonstrate how the energy balance of Rao and Newman accounts for heat of mixing across electrodes, but neglects heat of mixing within particles and in the electrolyte, which may be of equal magnitude. In general, the magnitude of the heat of mixing, which is the amount of heat released during relaxation after interruption of the current, will be small in materials with transport properties sufficiently high to provide acceptable battery performance, with the possible exception of heat of mixing within the insertion particles if the particle radius is large. Comparing simulations of heat generation to calorimetry measurements reveals that the entropic heat is significant and accounts for much of the variation of the rate of heat generation. The rate of irreversible heat generation is larger when the open-circuit potential varies steeply with lithium concentration, because of diffusion limitations within the solid.

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An investigation of lithium transport properties in V6O13 single crystals

Cited by 26 publications

References 19 publications

Kinetic Study of the Lithium Electroinsertion in V 2 O 5 by Impedance Spectroscopy

Kinetic Study of the Lithium Electroinsertion in V 2 O 5 by Impedance Spectroscopy

Further chemico-physical investigations on LixV2O5 bronze polycrystals

Thermal Modeling of Porous Insertion Electrodes

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