Physical Mechanisms of Intercalation

McKinnon, W. R.; Haering, R. R.

doi:10.1007/978-1-4615-7461-3_4

Cited by 111 publications

(99 citation statements)

References 82 publications

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“…It can be seen that the magnitude of the degree of guest load increases for modified anatase under discharge down to the voltage of 1.5 V, as compared to original anatase. The following equation can help to understand the process [4,5]:…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic Parameters of the Intercalation Reaction in Thermal and Laser Modified Nanodispersed Anatase

Sehin

Budzulyak

Morushko

et al. 2016

jpnu

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Abstract. It is modified matrix of anatase in turn of the thermal and laser treatments. The dependence of Gibbs energy change of the intercalation reaction of lithium with the guest load degree change was analyzed. Laser irradiation turned out to increase twice the value of maximum lithium "guest" loading, constricting heterophase area and changing contrarily concentration genesis of temperature dependence of entropy of lithium dilution. The optimal conditions of laser irradiation nanodispersive anatase (pulse energy E = 0,02 J, pulse duration τ = 15 ns repetition frequency f = 28 Hz, duration of exposure to 5 min.), at which specific energy characteristics of LPS, formed on its basis, increased by 55% is set.

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Section: Resultsmentioning

confidence: 99%

Thermodynamic Parameters of the Intercalation Reaction in Thermal and Laser Modified Nanodispersed Anatase

Sehin

Budzulyak

Morushko

et al. 2016

jpnu

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Thermodynamic Parameters of the Intercalation Reaction in Thermal and Laser Modified Nanodispersed Anatase

Sehin¹,

Budzulyak²,

Morushko³

et al. 2013

JMSE-B

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Abstract:It is modified matrix of anatase in turn of the thermal and laser treatments. The dependence of Gibbs energy change of the intercalation reaction of lithium with the guest load degree change was analyzed. Laser irradiation turned out to increase twice the value of maximum lithium "guest" loading, constricting heterophase area and changing contrarily concentration genesis of temperature dependence of entropy of lithium dilution. The optimal conditions of laser irradiation nanodispersive anatase (pulse energy E = 0.02 J, pulse duration τ = 15 ns repetition frequency f = 28 Hz, duration of exposure to 5 min), at which specific energy characteristics of LPS, formed on its basis, increased by 55% is set.

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“…In particular, k is proportional to the non-diagonal term, K ei , in equations (1). Since it is assumed in this paper that the electrons are mostly localized at the host lattice, this term will be neglected, see for discussion in [6]. Within this approximation the diagonal coefficients in equations (2a), (2b) are directly related to the partial electron and ion conductivities, k α = 1/κ α :…”

Section: Theoretical Model Of Coupled Electron-ion Transportmentioning

confidence: 99%

“…was earlier used by McKinnon to emphasize the relation between D ei and intercalation isotherms [6]. A simplest Frumkin-type intercalation isotherm with an interaction constant g (which is independent of X) has the following form [23,24]:…”

Section: The "Enhancement Factor" and Intercalation Isothermsmentioning

confidence: 99%

“…In contrast to the case of electroactive polymers, for Li-intercalated compounds it is often the availability of sites in the host's bulk that limits the intercalation capacity, as was suggested by McKinnon [6]. Although the partial ionic conductivity of Li-insertion compounds can, in principle, be measured by dc current technique, as was described by Weppner and Huggins for Li-alloys [3], a lot of experimental difficulties may complicate the measurements due to the fact that practical Li-ion insertion electrodes are mostly powdery porous composites.…”

Section: Introductionmentioning

confidence: 99%

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INTERPRETATION OF POTENTIAL INTERMITTENCE TITRATION TECHNIQUE EXPERIMENTS FOR VARIOUS Li-INTERCALATION ELECTRODES

Lévi¹,

Aurbach²,

Vorotyntsev³

2002

Condens. Matter Phys.

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In this paper we compare two different approaches for the calculation of the enhancement factor W i , based on its definition as the ratio of the chemical and the component diffusion coefficients for species in mixed-conduction electrodes, originated from the "dilute solution" or "lattice gas" models for the ion system. The former approach is only applicable for small changes of the ion concentration while the latter allows one to consider a broad range of intercalation levels. The component diffusion coefficient of lithium ions has been determined for a series of lithium intercalation anodes and cathodes. A new "enhancement factor" for the ion transport has been defined and its relations to the intercalation capacitance and the intercalation isotherm have been established. A correlation between the dependences of the differential capacitance and the partial ion conductivity on the potential has been observed. It is considered as a prove that the intercalation process is controlled by the availability of sites for Li-ion insertion rather than by the concurrent insertion of the counter-balancing electronic species.

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Physical Mechanisms of Intercalation

Cited by 111 publications

References 82 publications

Thermodynamic Parameters of the Intercalation Reaction in Thermal and Laser Modified Nanodispersed Anatase

Thermodynamic Parameters of the Intercalation Reaction in Thermal and Laser Modified Nanodispersed Anatase

Thermodynamic Parameters of the Intercalation Reaction in Thermal and Laser Modified Nanodispersed Anatase

INTERPRETATION OF POTENTIAL INTERMITTENCE TITRATION TECHNIQUE EXPERIMENTS FOR VARIOUS Li-INTERCALATION ELECTRODES

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