Organic Ionic Plastic Crystal-Based Composite Electrolyte with Surface Enhanced Ion Transport and Its Use in All-Solid-State Lithium Batteries

Xiaoen Wang; Haijin Zhu; George W. Greene; Yundong Zhou; Masahiro Yoshizawa-Fujita; Yukari Miyachi; Michel Armand; Maria Forsyth; Jennifer M. Pringle; Patrick C. Howlett

doi:10.1002/admt.201700046

Organic Ionic Plastic Crystal-Based Composite Electrolyte with Surface Enhanced Ion Transport and Its Use in All-Solid-State Lithium Batteries

Xiaoen Wang, Haijin Zhu, George W. Greene, Yundong Zhou, Masahiro Yoshizawa-Fujita, Yukari Miyachi, Michel Armand, Maria Forsyth, Jennifer M. Pringle, Patrick C. Howlett^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Solid-state electrolytes have been identified as one of the most attractive materials for the fabrication of reliable and safe lithium batteries. This work demonstrates a facile strategy to prepare highly conductive organic ionic plastic crystal (OIPC) composites by combination of a low weight fraction of Li⁺ doped OIPC (N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide, [C₂mpyr][FSI]) with commercial poly(vinylidene difluoride) (PVDF) powder. Benefiting from the enhancement of lithium ion dynamics, as evidenced by the solid-state NMR measurements, the composite electrolyte shows an order of magnitude higher conductivity than that of the bulk material. Lithium metal/LiFePO₄ cells incorporating the prepared composite electrolytes show impressively high specific capacity and good cycling stability (99.8% coulombic efficiency after 1200 cycles at 2 C, room temperature), which is the first demonstration of long-term cycling performance at such high rate for an OIPC-based electrolyte. The high voltage cathode, LiCo_1/3Ni_1/3Mn_1/3O₂ was tested and good rate performance and stable capacities have been achieved.

Original language	English
Article number	1700046
Journal	Advanced Materials Technologies
Volume	2
Issue number	7
DOIs	https://doi.org/10.1002/admt.201700046
State	Published - Jul 2017
Externally published	Yes

Keywords

composite electrolytes
lithium metal batteries
organic ionic plastic crystals
solid state NMR

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10.1002/admt.201700046

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Wang, X., Zhu, H., Greene, G. W., Zhou, Y., Yoshizawa-Fujita, M., Miyachi, Y., Armand, M., Forsyth, M., Pringle, J. M., & Howlett, P. C. (2017). Organic Ionic Plastic Crystal-Based Composite Electrolyte with Surface Enhanced Ion Transport and Its Use in All-Solid-State Lithium Batteries. Advanced Materials Technologies, 2(7), [1700046]. https://doi.org/10.1002/admt.201700046

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abstract = "Solid-state electrolytes have been identified as one of the most attractive materials for the fabrication of reliable and safe lithium batteries. This work demonstrates a facile strategy to prepare highly conductive organic ionic plastic crystal (OIPC) composites by combination of a low weight fraction of Li+ doped OIPC (N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide, [C2mpyr][FSI]) with commercial poly(vinylidene difluoride) (PVDF) powder. Benefiting from the enhancement of lithium ion dynamics, as evidenced by the solid-state NMR measurements, the composite electrolyte shows an order of magnitude higher conductivity than that of the bulk material. Lithium metal/LiFePO4 cells incorporating the prepared composite electrolytes show impressively high specific capacity and good cycling stability (99.8% coulombic efficiency after 1200 cycles at 2 C, room temperature), which is the first demonstration of long-term cycling performance at such high rate for an OIPC-based electrolyte. The high voltage cathode, LiCo1/3Ni1/3Mn1/3O2 was tested and good rate performance and stable capacities have been achieved.",

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author = "Xiaoen Wang and Haijin Zhu and Greene, {George W.} and Yundong Zhou and Masahiro Yoshizawa-Fujita and Yukari Miyachi and Michel Armand and Maria Forsyth and Pringle, {Jennifer M.} and Howlett, {Patrick C.}",

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AU - Greene, George W.

AU - Zhou, Yundong

AU - Yoshizawa-Fujita, Masahiro

AU - Miyachi, Yukari

AU - Armand, Michel

AU - Forsyth, Maria

AU - Pringle, Jennifer M.

AU - Howlett, Patrick C.

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N2 - Solid-state electrolytes have been identified as one of the most attractive materials for the fabrication of reliable and safe lithium batteries. This work demonstrates a facile strategy to prepare highly conductive organic ionic plastic crystal (OIPC) composites by combination of a low weight fraction of Li+ doped OIPC (N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide, [C2mpyr][FSI]) with commercial poly(vinylidene difluoride) (PVDF) powder. Benefiting from the enhancement of lithium ion dynamics, as evidenced by the solid-state NMR measurements, the composite electrolyte shows an order of magnitude higher conductivity than that of the bulk material. Lithium metal/LiFePO4 cells incorporating the prepared composite electrolytes show impressively high specific capacity and good cycling stability (99.8% coulombic efficiency after 1200 cycles at 2 C, room temperature), which is the first demonstration of long-term cycling performance at such high rate for an OIPC-based electrolyte. The high voltage cathode, LiCo1/3Ni1/3Mn1/3O2 was tested and good rate performance and stable capacities have been achieved.

AB - Solid-state electrolytes have been identified as one of the most attractive materials for the fabrication of reliable and safe lithium batteries. This work demonstrates a facile strategy to prepare highly conductive organic ionic plastic crystal (OIPC) composites by combination of a low weight fraction of Li+ doped OIPC (N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide, [C2mpyr][FSI]) with commercial poly(vinylidene difluoride) (PVDF) powder. Benefiting from the enhancement of lithium ion dynamics, as evidenced by the solid-state NMR measurements, the composite electrolyte shows an order of magnitude higher conductivity than that of the bulk material. Lithium metal/LiFePO4 cells incorporating the prepared composite electrolytes show impressively high specific capacity and good cycling stability (99.8% coulombic efficiency after 1200 cycles at 2 C, room temperature), which is the first demonstration of long-term cycling performance at such high rate for an OIPC-based electrolyte. The high voltage cathode, LiCo1/3Ni1/3Mn1/3O2 was tested and good rate performance and stable capacities have been achieved.

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KW - organic ionic plastic crystals

KW - solid state NMR

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ER -

Organic Ionic Plastic Crystal-Based Composite Electrolyte with Surface Enhanced Ion Transport and Its Use in All-Solid-State Lithium Batteries

Abstract

Keywords

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