Equivalent circuit analysis of mixed-conductor/electrode system by impedance spectroscopy

Matsui, Noboru

doi:10.1016/0167-2738(92)90073-x

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…The plots were used to fit the parameters of an equivalent circuit consisting of (R b Q b )(R gb Q gb )(Q el ) where R is the resistance, Q is the constant phase element, and the subscripts el, b and gb refer to the electrode, bulk and grain boundary as described elsewhere. [7,8] The ionic conductivity was calculated using σ = L/RA, where L is the thickness and A the area of the pellet, respectively. In addition, possible hygroscopicity issues were also minimized by pre-drying the prepared pellets before cell assembly in an inert atmosphere.…”

Section: Methodsmentioning

confidence: 99%

Computational and Experimental investigation of Nalipoite-Li₂APO₄ (A = Na, K) electrolytes for Li-ion batteries

2015

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The potential ionic conductors Li 2 APO 4 (A = Na, K) are investigated combining experiments and first principles calculations at the Density Functional Theory level. A high ionic conductivity of 6.5 x10 -6 and 1.5 x10 -5 S cm -1 at 25 and 70ºC, respectively, is found in Nalipoite-Li 2 NaPO 4 . For this mixed phosphate the energy barriers to Li motion are calculated. The lower energy barrier (0.7 eV) implies the inter-chain diffusion of Li in the b-c plane. We predict that ionic mobility is enhanced in the isostructural Li 2 KPO 4 , with the lowest calculated energy barrier being 0.4 eV.

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Section: Methodsmentioning

confidence: 99%

Computational and Experimental investigation of Nalipoite-Li₂APO₄ (A = Na, K) electrolytes for Li-ion batteries

2015

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“…The impedance spectra were transformed into Nyquist plots. The plots were used to fit the parameters of an equivalent circuit consisting of ( R b Q b )( R gb Q gb )( Q el ), where R is the resistance, Q is the constant phase element, and the subscripts el, b, and gb refer to the electrode, bulk, and grain boundary, as described elsewhere. , The ionic conductivity was calculated as σ = L / RA , where L and A are the thickness and area of the pellet, respectively. In addition, possible hygroscopicity issues were also minimized by predrying the prepared pellets before cell assembly in an inert atmosphere.…”

Section: Methodsmentioning

confidence: 99%

An Unnoticed Inorganic Solid Electrolyte: Dilithium Sodium Phosphate with the Nalipoite Structure

2014

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Solid electrolytes are crucial in the development of advanced lithium batteries and related technologies. Orthorhombic Li2NaPO4 (nalipoite) was synthesized, and its ionic conductivity compared very favorably with that of Li3PO4. The potential applicability of Li(3-x)Na(x)PO4 as a lithium ion solid electrolyte was investigated for first time. First-principles DFT calculations were used to evaluate the possibilities of preparing other crystal structures.

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Electrochemical impedance analysis on solid electrolyte oxygen sensor with gas and liquid reference electrodes for liquid LBE

et al. 2017

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Equivalent circuit analysis of mixed-conductor/electrode system by impedance spectroscopy

Cited by 8 publications

References 3 publications

Computational and Experimental investigation of Nalipoite-Li₂APO₄ (A = Na, K) electrolytes for Li-ion batteries

Computational and Experimental investigation of Nalipoite-Li₂APO₄ (A = Na, K) electrolytes for Li-ion batteries

An Unnoticed Inorganic Solid Electrolyte: Dilithium Sodium Phosphate with the Nalipoite Structure

Electrochemical impedance analysis on solid electrolyte oxygen sensor with gas and liquid reference electrodes for liquid LBE

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Equivalent circuit analysis of mixed-conductor/electrode system by impedance spectroscopy

Cited by 8 publications

References 3 publications

Computational and Experimental investigation of Nalipoite-Li2APO4 (A = Na, K) electrolytes for Li-ion batteries

Computational and Experimental investigation of Nalipoite-Li2APO4 (A = Na, K) electrolytes for Li-ion batteries

An Unnoticed Inorganic Solid Electrolyte: Dilithium Sodium Phosphate with the Nalipoite Structure

Electrochemical impedance analysis on solid electrolyte oxygen sensor with gas and liquid reference electrodes for liquid LBE

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Product

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About

Computational and Experimental investigation of Nalipoite-Li₂APO₄ (A = Na, K) electrolytes for Li-ion batteries

Computational and Experimental investigation of Nalipoite-Li₂APO₄ (A = Na, K) electrolytes for Li-ion batteries