Synthesis of Hard–Soft–Hard Triblock
Copolymers, Poly(2-naphthyl glycidyl ether)-block-poly[2-(2-(2-methoxyethoxy)ethoxy)ethyl glycidyl ether]-block-poly(2-naphthyl glycidyl ether), for Solid Electrolytes
Posted on 2018-03-13 - 11:35
Hard–soft–hard
triblock copolymers based on poly(ethylene
oxide) (PEO), poly(2-naphthyl glycidyl ether)-block-poly[2-(2-(2-methoxyethoxy)ethoxy)ethyl glycidyl ether]-block-poly(2-naphthyl glycidyl ether)s (PNG-PTG-PNGs), were
synthesized by sequential ring-opening polymerization of 2-(2-(2-methoxyethoxy)ethoxy)ethyl
glycidyl ether and 2-naphthyl glycidyl ether using a bidirectional
initiator catalyzed by a phosphazene base. Four PNG-PTG-PNGs had different
block compositions (fwt,PNG = 9.2–28.6
wt %), controlled molecular weights (Mn = 23.9–30.9 kDa), and narrow dispersities (Đ = 1.11–1.14). Most of the PNG-PTG-PNG electrolytes had much
higher Li+ conductivities than that of a PEO electrolyte
(6.54 × 10–7 S cm–1) at room
temperature. Eespecially, the Li+ conductivity of PNG18-PTG107-PNG18 electrolyte (9.5 ×
10–5 S cm–1 for fwt,PNG = 28.6 wt %) was comparable to one of a PTG electrolyte
(1.11 × 10–4 S cm–1). The
Li+ conductivities of PNG-PTG-PNG electrolytes were closely
correlated to efficient Li+ transport channels formed by
the microphase separation into soft PTG and hard PNG domains.
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Kim, Boram; Chae, Chang-Geun; Satoh, Yusuke; Isono, Takuya; Ahn, Min-Kyoon; Min, Cheong-Min; et al. (2018). Synthesis of Hard–Soft–Hard Triblock
Copolymers, Poly(2-naphthyl glycidyl ether)-block-poly[2-(2-(2-methoxyethoxy)ethoxy)ethyl glycidyl ether]-block-poly(2-naphthyl glycidyl ether), for Solid Electrolytes. ACS Publications. Collection. https://doi.org/10.1021/acs.macromol.7b02553
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AUTHORS (10)
BK
Boram Kim
CC
Chang-Geun Chae
YS
Yusuke Satoh
TI
Takuya Isono
MA
Min-Kyoon Ahn
CM
Cheong-Min Min
JH
Jin-Hyeok Hong
CR
Carolina Frias Ramirez
TS
Toshifumi Satoh
JL
Jae-Suk Lee