Nanopore-confined g-C3N4 nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium-sulfur batteries

doi:10.1039/c8ta00529j

	Nanopore-confined g-C3N4 nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium-sulfur batteries
	Zhang, Zhichao 1; Zhang, Han 2; Zhao, Zongbin 2; Hou, Ya-Nan 2; Tang, Yongchao 2; Dong, Yanfeng 3; Wang, Shuang 2; Hu, Xiaojing 2; Qiu, Jieshan 2; Wang, Xuzhen 1,2
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2018-04-28
卷号	6 期号:16 页码:7133-7141
ISSN号	2050-7488
DOI	10.1039/c8ta00529j
文献子类	Article
英文摘要	Benefiting from the high theoretical specific capacity and low cost consumption, lithium-sulfur batteries have been regarded as the promising next-generation energy storage technology. However, lithium-sulfur batteries still encounter a series of challenges such as low conductivity and serious volumetric expansion of sulfur during the discharge process as well as the stubborn shuttle effect of polysulfides. Such problems have greatly plagued the real applications of lithium-sulfur batteries. Herein, we have synthesized below-5-nm g-C3N4 nanodots based on a pore confinement effect, and they are embedded in a MOF-derived N, S co-doped hollow porous carbon shell (CN@NSHPC) via a unique double solvent-induced strategy. CN@NSHPC displays superior lithium polysulfide (LiPS) adsorptivity and a high sulfur loading of 73%. When applied as an electrode in lithium-sulfur batteries, the CN@NSHPC electrode delivers an excellent specific capacity of 1447 mA h g(-1) at 0.2C, good rate capability of 387 mA h g(-1) at 5C, and excellent cycling stability, specifically, only 0.048% decay per cycle at 1.0C over 500 cycles. This proposed strategy provides an insight into a new pathway to construct co-doped carbon hollow nanostructure and nanodot materials by the pore confinement effect.
WOS关键词	METAL-ORGANIC FRAMEWORKS ; REDUCED-GRAPHENE-OXIDE ; CATHODE MATERIAL ; COMPOSITE CATHODES ; ENERGY-STORAGE ; LONG-LIFE ; PERFORMANCE ; SHELL ; NITROGEN ; SPHERES
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000431003600046
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167130]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Zhao, Zongbin; Qiu, Jieshan
作者单位	1.Dalian Univ Technol, Sch Chem, Dalian 116024, Peoples R China 2.Dalian Univ Technol, State Key Lab Fine Chem, Liaoning Key Lab Energy Mat & Chem Engn, PSU DUT Joint Ctr Energy Res,Sch Chem Engn, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhichao,Zhang, Han,Zhao, Zongbin,et al. Nanopore-confined g-C3N4 nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium-sulfur batteries[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(16):7133-7141.
APA	Zhang, Zhichao.,Zhang, Han.,Zhao, Zongbin.,Hou, Ya-Nan.,Tang, Yongchao.,...&Wang, Xuzhen.(2018).Nanopore-confined g-C3N4 nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium-sulfur batteries.JOURNAL OF MATERIALS CHEMISTRY A,6(16),7133-7141.
MLA	Zhang, Zhichao,et al."Nanopore-confined g-C3N4 nanodots in N, S co-doped hollow porous carbon with boosted capacity for lithium-sulfur batteries".JOURNAL OF MATERIALS CHEMISTRY A 6.16(2018):7133-7141.