Configuring PSx tetrahedral clusters in Li-excess Li7P3S11 solid electrolyte

Configuring PSx tetrahedral clusters in Li-excess Li7P3S11 solid electrolyte

We demonstrate that the Li-ion conductivity can be improved by adding a certain amount of Li (x = 0.25–0.5) as a charge carrier to the composition of glass-ceramic Li7+xP3S11. Structural analysis clarified that the structural changes caused by the ratio of ortho-thiophosphate tetrahedra PS43− and py...

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Veröffentlicht in:APL materials 2018-04, Vol.6 (4), p.047902-047902-6
Hauptverfasser: Jung, Wo Dum, Yun, Bin-Na, Jung, Hun-Gi, Choi, Sungjun, Son, Ji-Won, Lee, Jong-Ho, Lee, Jong-Heun, Kim, Hyoungchul
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container_end_page 047902-6
container_issue 4
container_start_page 047902
container_title APL materials
container_volume 6
creator Jung, Wo Dum
Yun, Bin-Na
Jung, Hun-Gi
Choi, Sungjun
Son, Ji-Won
Lee, Jong-Ho
Lee, Jong-Heun
Kim, Hyoungchul
description We demonstrate that the Li-ion conductivity can be improved by adding a certain amount of Li (x = 0.25–0.5) as a charge carrier to the composition of glass-ceramic Li7+xP3S11. Structural analysis clarified that the structural changes caused by the ratio of ortho-thiophosphate tetrahedra PS43− and pyro-thiophosphate ditetrahedra P2S74− affect the Li-ion conductivity. The ratio of PS43− and P2S74− varies depending on x and the highest Li-ion conductivity (2.5 × 10−3 S cm−1) at x = 0.25. All-solid-state LiNi0.8Co0.15Al0.05O2/Li7.25P3S11/In-metal cell exhibits the discharge capacity of 106.2 mAh g−1. This ion conduction enhancement from excess Li is expected to contribute to the future design of sulfide-type electrolytes.
doi_str_mv 10.1063/1.5011105
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title Configuring PSx tetrahedral clusters in Li-excess Li7P3S11 solid electrolyte
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