Polyisoprene Captured Sulfur Nanocomposite Materials
for High-Areal-Capacity Lithium Sulfur Battery
Version 3 2019-06-18, 19:12
Version 2 2019-06-07, 13:08
Version 1 2019-06-07, 13:08
Posted on 2019-06-18 - 19:12
A polyisoprene-sulfur
(PIPS) copolymer and nano sulfur composite
material (90 wt % sulfur) is synthesized through inverse vulcanization
of PIP polymer with micrometer-sized sulfur particles for high-areal-capacity
lithium sulfur batteries. The polycrystalline structure and nanodomain
nature of the copolymer are revealed through high-resolution transmission
electron microscopy (HRTEM). PIP polymer is also used as binders for
the electrode to further capture the dissovlved polysulfides. A high
areal capacity of ca. 7.0 mAh/cm2 and stable cycling are
achieved based on the PIPS nanosulfur composite with a PIP binder,
crucial to commercialization of lithium sulfur batteries. The chemical
confinement both at material and electrode level alleviates the diffusion
of polysulfides and the shuttle effect. The sulfur electrodes, both
fresh and cycled, are analyzed through scanning electron microscopy
(SEM). This approach enables scalable material production and high
sulfur utilization at the cell level.
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Li, Zeheng; Fang, Chen; Qian, Chao; Zhou, Shudong; Song, Xiangyun; Ling, Min; et al. (2019). Polyisoprene Captured Sulfur Nanocomposite Materials
for High-Areal-Capacity Lithium Sulfur Battery. ACS Publications. Collection. https://doi.org/10.1021/acsapm.9b00006
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AUTHORS (8)
ZL
Zeheng Li
CF
Chen Fang
CQ
Chao Qian
SZ
Shudong Zhou
XS
Xiangyun Song
ML
Min Ling
CL
Chengdu Liang
GL
Gao Liu