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Nitrogen and oxygen dual-doped hierarchical porous carbon derived from rapeseed meal for high performance lithium–sulfur batteries

There is an ever-increasing interest in the utilization of biomass carbon materials as the host materials of sulfur for Li–S batteries. Herein, an in-situ N (1.67 at%) and O (12.1 at%) dual-doped porous carbon derived from rapeseed meal has been fabricated by KOH activation and subsequent carbonizat...

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Bibliographic Details
Published in:Journal of solid state chemistry 2019-02, Vol.270, p.500-508
Main Authors: Xia, Li, Song, Zhicui, Zhou, Lingxi, Lin, Dunmin, Zheng, Qiaoji
Format: Article
Language:English
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Summary:There is an ever-increasing interest in the utilization of biomass carbon materials as the host materials of sulfur for Li–S batteries. Herein, an in-situ N (1.67 at%) and O (12.1 at%) dual-doped porous carbon derived from rapeseed meal has been fabricated by KOH activation and subsequent carbonization. The obtained material possesses abundant micropores and mesopores with a relatively high specific surface area of 2434.9 m2 g−1 and a large pore volume of 1.49 cm3 g−1, contributing to physical and chemical dual-adsorption for polysulfides. The carbon material is composited with sulfur, delivers a high reversible capacity of 1259 mAh g−1 at 0.1 C and exhibits excellent cycling stability (512 mAh g−1 after 200 cycles at the areal mass loading of S of 2.4 mg cm−2). This work proposes an efficient method to develop carbon-based electrode materials with heteroatom dual-doped hierarchical framework from waste for high performance Li–S batteries. The rapeseed meal carbon materials is composited with sulfur, delivers a high reversible capacity of 1259 mAh g-1 at 0.1 C and exhibits excellent cycling stability (512 mAh g-1 after 200 cycles at the areal mass loading of S of 2.4 mg cm-2). This work proposes an efficient method to develop carbon-based electrode materials with heteroatom dual-doped hierarchical framework from waste for high performance Li–S batteries. [Display omitted]
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2018.12.031