Thermal diffusivity measurement on LiMn2O4 and its de-lithiated form (λ-MnO2) using photoacoustic technique

Raveendranath, K.; Ravi, Jyostna; Jayalekshmi, S.; Rasheed, Tabish; Nair, K. P. R.

doi:10.1016/j.mseb.2006.04.012

Cited by 30 publications

(17 citation statements)

References 21 publications

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“…This is consistent with the XRD data obtained after Mn dissolution by impregnating the cathode with the electrolyte 13 and is similar to the XRD pattern when Li ions are introduced into Mn vacancies in the 16d position in the lattice. 6 Figure 8 also shows the XRD peaks corresponding to λ-MnO 2 when the charge-discharge tests were carried out using LiMn 2 O 4 particles produced at high temperatures, 31 indicating that an irreversible structural change takes place in the lattice after Mn dissolution.…”

Section: Resultsmentioning

confidence: 98%

The Sintering Temperature Effect on Electrochemical Properties of LiMn₂O₄

Hwang¹,

Park²,

Park³

et al. 2011

Bulletin of the Korean Chemical Society

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The effect of sintering temperature on the electrochemical property of LiMn2O4 was investigated. Results showed that the particle size was increased at higher sintering temperatures while the initial capacity was decreased after high temperature sintering. Capacity fading, on the other hand, was suppressed at lower sintering temperatures since the sintering at higher temperatures (≥ 800 o C) increased the Mn ions with a lower oxidation state (Mn +3 ), which induced structural instability during cycling due to dissolution of Mn ions into the electrolyte. In particular, LiMn2O4 sintered above 830 o C showed severe capacity fading (capacity loss was 38% of initial capacity) by lower coulombic efficiency due to the abnormally increased particle size.

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Section: Resultsmentioning

confidence: 98%

The Sintering Temperature Effect on Electrochemical Properties of LiMn₂O₄

Hwang¹,

Park²,

Park³

et al. 2011

Bulletin of the Korean Chemical Society

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“…This property depends closely on the microstructural variations, composition and the processing conditions of the sample (Raveendranath, 2006). The OPC technique is widely used for several applications aiming at the thermal characterization of great variety of samples such as biological liquids and colloids, plant leaves, wood (López, 1996) , two layer systems (Mansanares, 1990), semiconductors (Calderon et.…”

Section: Photoacoustical Investigation -Measurement Of Thermal Diffusmentioning

confidence: 99%

On the Use of Photothermal Techniques as a Tool to Characterize Ceramic-Metal Materials

Machado¹,

Filgueira²,

Faria³

et al. 2011

Advances in Ceramics - Characterization, Raw Materials, Processing, Properties, Degradation and Healing

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“…These applications are very versatile, ranging from thermal diffusivity [4][5][6][7] and thermal effusivity [8] measurements to detection of X-rays [2], characterization of heterostructure component materials [9], and in vivo and in situ studies in plant photosynthesis research [10].…”

Section: Introductionmentioning

confidence: 99%

Study of a Thermophysical System with Two Time Constants Using an Open Photoacoustic Cell

Bonno¹,

Zéninari²,

Joly³

et al. 2011

Int J Thermophys

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In this paper a study of a thermophysical system with two time constants, an electronic time constant and a thermal relaxation time constant, is presented. The system under study is a thin metallic sample coupled to an open photoacoustic (PA) cell, the resulting signal being measured by a lock-in amplifier or by a data acquisition device. All operations are performed by a computer-based automatic measurement system. A time-and frequency-domain theoretical analysis of the photothermal signal is given combining the usual PA scheme to the energy balance equation of the system. The experimental results are in very good agreement with the developed theory.

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Thermal diffusivity measurement on LiMn2O4 and its de-lithiated form (λ-MnO2) using photoacoustic technique

Cited by 30 publications

References 21 publications

The Sintering Temperature Effect on Electrochemical Properties of LiMn₂O₄

The Sintering Temperature Effect on Electrochemical Properties of LiMn₂O₄

On the Use of Photothermal Techniques as a Tool to Characterize Ceramic-Metal Materials

Study of a Thermophysical System with Two Time Constants Using an Open Photoacoustic Cell

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Thermal diffusivity measurement on LiMn2O4 and its de-lithiated form (λ-MnO2) using photoacoustic technique

Cited by 30 publications

References 21 publications

The Sintering Temperature Effect on Electrochemical Properties of LiMn2O4

The Sintering Temperature Effect on Electrochemical Properties of LiMn2O4

On the Use of Photothermal Techniques as a Tool to Characterize Ceramic-Metal Materials

Study of a Thermophysical System with Two Time Constants Using an Open Photoacoustic Cell

Contact Info

Product

Resources

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The Sintering Temperature Effect on Electrochemical Properties of LiMn₂O₄

The Sintering Temperature Effect on Electrochemical Properties of LiMn₂O₄