Effective incorporation of nitrogen and boron in worm-like carbon foam for confining polysulfides

doi:10.1016/j.carbon.2019.08.088

SIC OpenIR

	Effective incorporation of nitrogen and boron in worm-like carbon foam for confining polysulfides
	Xu, Jijian; Li, Zhi; Sun, Peng; Liu, Kun; Liu, Zhanqiang; Hong, Zhanglian; Huang, Fuqiang
	2019-12-01
Source Publication	CARBON
ISSN	0008-6223
Volume	155 Pages:379
Subtype	Article
Abstract	Flexible electrode materials toward rational design and low-cost fabrication are crucial to energy storage applications. Herein, a three-dimensional (3D) flexible N, B co-doped carbon foam (NBC) is developed, enabling efficient polysulfides confinement. N, B co-doping is employed to overcome the conflict between heteroatom doping and stability of carbon lattice, because one B and one N atoms are isoelectronic to two C atoms. B atoms in such a carbon structure possess positive charge which can interact with S-n(2-) anions in forming S-n(2) (...) B while N atoms form negative charge which construct a strong-couple interaction with Lithorn cations in forming (NLi2Sn)-Li-.... Moreover, the fabrication approach of corresponding flexible 3D carbon form is extremely facile derived from the self-gelation of agar. When used as the host for S, such a 3D carbon foam provides a continuous conductive structure, accommodates the volume change during long-term cycling and serves as a barrier for polysulfides dissolution. As a result, cycling performance of high sulfur loading (5.8 mg cm(-2)) NBC-S electrode exhibits high areal capacity of 5.6 mA h cm(-2) (965mA h g(-1)) with a very small capacity decay of 0.03% per cycle over 350 cycles at 0.2 C. (C) 2019 Elsevier Ltd. All rights reserved.
DOI	10.1016/j.carbon.2019.08.088
Language	英语
WOS Research Area	Chemistry ; Materials Science
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26703
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Xu, Jijian,Li, Zhi,Sun, Peng,et al. Effective incorporation of nitrogen and boron in worm-like carbon foam for confining polysulfides[J]. CARBON,2019,155:379.
APA	Xu, Jijian.,Li, Zhi.,Sun, Peng.,Liu, Kun.,Liu, Zhanqiang.,...&Huang, Fuqiang.(2019).Effective incorporation of nitrogen and boron in worm-like carbon foam for confining polysulfides.CARBON,155,379.
MLA	Xu, Jijian,et al."Effective incorporation of nitrogen and boron in worm-like carbon foam for confining polysulfides".CARBON 155(2019):379.

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