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Efficient Synthesis of Graphene Nanoscrolls for Fabricating Sulfur-Loaded Cathode and Flexible Hybrid Interlayer toward High-Performance Li–S Batteries
journal contribution
posted on 2016-12-07, 00:00 authored by Yi Guo, Gang Zhao, Naiteng Wu, Yun Zhang, Mingwu Xiang, Bo Wang, Heng Liu, Hao WuA modified lyophilization
approach is developed and used for highly efficient transformation
of 2D graphene oxide sheet into 1D graphene nanoscroll (GNS) with
high topological transforming efficiency (∼94%). Because of
the unique open tubular structure and large specific surface area
(545 m2 g–1), GNS is utilized for the
first time as a porous cathode scaffold for encapsulating sulfur with
a high loading (81 wt %), and also as a conductive skeleton for assembling
MnO2 nanowires into a flexible free-standing hybrid interlayer,
both enabling high-rate and long-life Li–S battery.
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GNSHigh-PerformanceinterlayersurfaceLiconductive skeletonFabricating Sulfur-Loaded CathodeloadingtopologicalEfficient Synthesistransformationlyophilization approachencapsulating sulfurBatterieefficiencywt2 D graphene oxide sheetGraphene Nanoscrollscathode scaffold1 D graphene nanoscrollMnO 2 nanowiresFlexible Hybrid Interlayer
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