Lithium-ion transfer between LixCoO2and polymer gel electrolytes

Yamada, Izumi; Iriyama, Yasutoshi; Abe, Takeshi; Ogumi, Zempachi

doi:10.1016/j.stam.2006.07.005

Cited by 11 publications

(11 citation statements)

References 13 publications

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“…Two major contributions to the interfacial impedance are commonly discussed: (1) the low conductivity and high activation energy of SEI and (2) the resistance associated with the lithium desolvation process as it changes phases from electrolyte to SEI, from SEI to [72,73,103,[108][109][110][111][112][113]. Because no SEI is present on the Li 4 Ti 5 O 12 anode or ceramic, the desolvation contribution can be straightforwardly extracted from impedance measurements, while on graphite electrodes one has to decouple the desolvation and SEI contributions.…”

Section: Simulations Of the Electrode-electrolyte Interfacesmentioning

confidence: 99%

Molecular Modeling of Electrolytes

Borodin

2014

Modern Aspects of Electrochemistry

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Recent advances in molecular modeling provide significant insight into electrolyte electrochemical and transport properties. The first part of the chapter discusses applications of quantum chemistry methods to determine electrolyte oxidative stability and oxidation-induced decomposition reactions. A link between the oxidation stability of model electrolyte clusters and the kinetics of oxidation reactions is established and compared with the results of linear sweep voltammetry measurements. The second part of the chapter focuses on applying molecular dynamics (MD) simulations and density functional theory to predict the structural and transport properties of liquid electrolytes and solid electrolyte interphase (SEI) model compounds; the free energy profiles for lithium desolvation from electrolytes; and the behavior of electrolytes at charged electrodes and the electrolyte-SEI interface.

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Section: Simulations Of the Electrode-electrolyte Interfacesmentioning

confidence: 99%

Molecular Modeling of Electrolytes

Borodin

2014

Modern Aspects of Electrochemistry

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“…Use of such gel polymer electrolytes in devices has made the 'all solid state concept' a reality. At present, many electrochemical devices that are being used and being developed are based on lithium which is known as having some drawbacks such as safety issues, handling problems and toxicity 5,6 . Therefore, it would be of great interest to develop non Li based systems in order to avoid the drawbacks of Li based devices.…”

Section: Introductionmentioning

confidence: 99%

Ionic conductivity of a PMMA based gel polymer electrolyte and its performance in solid state electrochemical cells

et al. 2015

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Gel polymer electrolytes are known to be very suitable for many electrochemical devices. They have been extensively studied for lithium based electrochemical cells. But, due to several drawbacks of lithium based cells such as safety issues, handling problems and toxicity, it is the time to develop non Li based cells. In this study, ionic conductivity of a gel polymer electrolyte (GPE) based on polymethylmethacrylate, ethylene carbonate, propylene carbonate and tetrapropylammonium iodide and its performance in an Mg / C: I2 cell was investigated. GPE was prepared by varying salt concentration using hot pressed method and the composition, 20 PMMA / 30 EC / 30 PC / 40 Pr4N + I showed the highest conductivity of 5.02 x 10 -3 Scm -1 at 28  C. The cell in the form Mg / GPE / C+I2 showed an average open circuit voltage of 1.9 V. The average short circuit current was 3.3 mA. It was possible to observe a good stability by the self discharge characteristics of the cell.

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“…Other compounds about Li are still prepared to estimate the electrochemical behavior of them. These compounds are usually LiCoO 2 [3,4], LiNiO 2 [5,6], LiMn 2 O 4 [7,8], LiV 3 O 8 [9], and γ-LiV 2 O 5 [10].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we first developed a square model for LiFePO 4 . This model is based on the shape of LiFePO 4 .…”

Section: Introductionmentioning

confidence: 99%

Square model for charge and discharge behavior of cathode electrode materials

Xie

Zhang

Wang

2011

Ionics

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The shape of cathode electrode affects severely the potential curves of charge/discharge process of lithium ion cells. In this paper, we take LiFePO 4 for an example. The square model is presented to predict the concentration of lithium on the cathode electrode under some simplified conditions. With the square model as a tool, effects of shape and position are determined and analyzed. Meanwhile, the lithium transportation, Gibbs free energy, and battery potential are proved to be different from that of sphere models. It shows that asymmetry of electrode materials makes a great impact on the performance of charge or discharge process.

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Lithium-ion transfer between Li_xCoO₂and polymer gel electrolytes

Cited by 11 publications

References 13 publications

Molecular Modeling of Electrolytes

Molecular Modeling of Electrolytes

Ionic conductivity of a PMMA based gel polymer electrolyte and its performance in solid state electrochemical cells

Square model for charge and discharge behavior of cathode electrode materials

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