Superionic conduction in Li 2 S - P 2 S 5 - LiI - glasses

Mercier, R.; Malugani, J.P.; Fahys, Bernard; Robert, Guy

doi:10.1016/0167-2738(81)90341-6

Cited by 380 publications

(236 citation statements)

References 6 publications

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“…I1 est int6ressant de consid+rer les longueurs P-S de ponts P-S-P [2,125 (3)A] et les longueurs P-S (2,03 A) des groupes PS3 duns Ag4P2S 7 (Toffoli, Khodadad & Rodier, 1977b). Duns les, ions P2S~-form6s par deux groupes PS3 li6s par une liaison P-P, cette longeur P-S est l+g6rement plus courte [2,032(2)A duns Li4P2S 6] (Mercier, Malugani, Fahys, Robert & Douglade, 1982). …”

Section: D~termination De La Structureunclassified

“…Le syst6me (Li2S)x-(P2S5)l_ x permet d'obtenir des verres dans un domaine de concentrations (0,60 < x < 0,72) qui pr6sentent une conductivit6 ionique par les ions Li + particuli6rement remarquable (Mercier, Malugani, Fahys & Robert, 1981). Ainsi les verres de formulation Li4P2S 7 (x = 0,667) poss~dent-t-ils une conductivit6 ionique de 10 -4 f)-~ cm -~ fi 298K (Malugani, Robert & Mercier, 1980).…”

Section: Introductionunclassified

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Structure du tetrathiophosphate de lithium

Mercier¹,

Malugani²,

Fahys³

et al. 1982

Acta Crystallogr B Struct Sci

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Li3PS 4 crystallizes in the orthorhombic system, space group Prima, with a = 13.066 (3), b = 8.015 (2), c = 6.101 (2)A, V=639/ka, z=4, dm = 1.85, dx= 1.87Mg m -3. With Mo Kt~ radiation (2 = 0.71069 ,~,/t = 1.5 mm-~), the structure was refined to R = 0.046 with 255 independent reflexions (0 < 30 °). Tetrahedral PSIanions (mean P-S length 2.050 ]~) are centered on mirror planes; three kinds of Li + ions are revealed in the asymmetric unit: Li(1) in a fully filled site (tetrahedral coordination: Li...S ~_ 2.46/~); and Li(2) and Li(3) with occupancy factors of 0.7 and 0.3 0567-7408/82/071887-04501.00 respectively, so that diffusion of Li + through Li(2)-Li(3)--Li(2) tunnels with a 2.52]k jump between vicinal sites could be expected.

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Section: D~termination De La Structureunclassified

Section: Introductionunclassified

Structure du tetrathiophosphate de lithium

Mercier¹,

Malugani²,

Fahys³

et al. 1982

Acta Crystallogr B Struct Sci

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show abstract

“…6,7 Recently, some inorganic sulfides have been reported as highly conductive Li-ion conductors. 8,9 Hayashi et al found that Li 2 S-P 2 S 5 glassy solid electrolytes showed high ionic conductivity comparable to liquid electrolytes. 10,11 Furthermore, the Li 2 S-P 2 S 5 solid electrolytes are so soft and flexible that a closer contact interface between an electrode and solid electrolyte without any voids or cracks is formed by hot pressing technique, 12 which is quite different from the oxide solid electrolyte/electrode interphase.…”

Section: Introductionmentioning

confidence: 99%

Microelectrode Studies on Kinetics of Charge Transfer at an Interface of Li Metal and Li2S-P2S5 Solid Electrolytes

et al. 2012

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Charge transfer kinetics at the Li metal electrode/electrolyte interface for three inorganic solid electrolytes and an organic liquid electrolyte were elucidated with two parameters, exchange current density (i 0 ) for Li/Li + couple reactions and ionic conductivity in electrolyte. The former was evaluated by potential step method with a microelectrode, while the latter was done by electrochemical impedance spectroscopy. Both i 0 and ionic conductivity showed Arrhenius type dependence, and activation energies (E a ) for the charge transfer reactions and ionic conduction were evaluated. In the case of the organic liquid electrolyte, E a for the Li/Li + couple reactions was higher than that for ionic conduction because of the solvation/desolvation of Li + ion. However, for the Li 2 S-P 2 S 5 solid solid electrolytes, the E a for the Li/Li + couple reactions was quite close to that for ionic conduction due to the lack of the solvation/desolvation.

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“…Among all scientific applications, electrical transport properties are of interest, where some glasses can be used as electrically insulators while some others can be used as conductors depending mainly on their compositions. It is known also that the amount and type of the introduced alkali oxide into a glass network affect directly relation with several properties of such glass [4][5][6]. Therefore, the understanding of the electrical conductivity of glasses is very important.…”

Section: Introductionmentioning

confidence: 99%