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Solid‐State Lithium Conductors for Lithium Metal Batteries Based on Electrospun Nanofiber/Plastic Crystal Composites
Author(s) -
Zhou Yundong,
Wang Xiaoen,
Zhu Haijin,
YoshizawaFujita Masahiro,
Miyachi Yukari,
Armand Michel,
Forsyth Maria,
Greene George W.,
Pringle Jennifer M.,
Howlett Patrick C.
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201700691
Subject(s) - polyvinylidene fluoride , materials science , plastic crystal , electrolyte , thermal stability , lithium (medication) , nanofiber , electrochemistry , chemical engineering , electrospinning , composite material , polymer , electrode , organic chemistry , chemistry , medicine , endocrinology , engineering , phase (matter)
Organic ionic plastic crystals (OIPCs) are a class of solid‐state electrolytes with good thermal stability, non‐flammability, non‐volatility, and good electrochemical stability. When prepared in a composite with electrospun polyvinylidene fluoride (PVdF) nanofibers, a 1:1 mixture of the OIPC N ‐ethyl‐ N ‐methylpyrrolidinium bis(fluorosulfonyl)imide ([C 2 mpyr][FSI]) and lithium bis(fluorosulfonyl)imide (LiFSI) produced a free‐standing, robust solid‐state electrolyte. These high‐concentration Li‐containing electrolyte membranes had a transference number of 0.37(±0.02) and supported stable lithium symmetric‐cell cycling at a current density of 0.13 mA cm −2 . The effect of incorporating PVdF in the Li‐containing plastic crystal was investigated for different ratios of PVdF and [Li][FSI]/[C 2 mpyr][FSI]. In addition, Li|LiNi 1/3 Co 1/3 Mn 1/3 O 2 cells were prepared and cycled at ambient temperature and displayed a good rate performance and stability.