N/O dual-doped hollow carbon microspheres constructed by holey nanosheet shells as large-grain cathode host for high loading Li-S batteries

doi:10.1016/j.ensm.2019.06.009

SIC OpenIR

	N/O dual-doped hollow carbon microspheres constructed by holey nanosheet shells as large-grain cathode host for high loading Li-S batteries
	Zhou, XJ; Tian, J; Wu, QP; Hu, JL; Li, CL
	2020
Source Publication	ENERGY STORAGE MATERIALS
ISSN	2405-8297
Pages	644
Subtype	Article
Abstract	Lithium-sulfur (Li-S) battery is one of the most prospective energy storage systems beyond lithium ion battery technologies owing to its super-high theoretical energy density and low cost. However, the dissolution of polysulfide intermediates and low level of sulfur loading still retard the practical application of Li-S batteries. Here, a self-sacrifice templating strategy is reported to synthesize N/O dual-doped hollow carbon microspheres (HCMs) by carbonization of polydopamine coating carbon nitride hollow spheres. The HCM host is constructed by holey nanosheets in shell with a large surface area (873 m(2)/g) and pore volume (4.84 cm(3)/g), high N/O doping contents (5.36 and 6.99 atom%). Benefiting from the confinement effect, wetting capability, lithiophilic adsorption and catalytic conversion, HCMs-S cathode enables a reversible capacity around 900 mAh/g at 1-2 C and a retention capacity of 530 mAh/g after 900 cycles. HCMs-S also enables an endurance of high mass and areal S loadings (90% and 4.84 mg/cm(2)) with a reversible capacity around 700 mAh/g. Long-term and high-rate cycling does not degrade the homogeneous deposition of nanostructured Li2S at cathode side and dendrite-free Li plating at anode side. This work demonstrates a facile approach to micro-sized C-S grains with desirable three-dimensional architecture composed of two-dimensional building blocks and interconnected mass/charge transport channels for high loading Li-S batteries.
DOI	10.1016/j.ensm.2019.06.009
WOS Keyword	CONVERSION ANODE ; SULFUR CATHODE ; NITROGEN ; POLYSULFIDES ; IMMOBILIZER ; KINETICS ; SPHERES ; SIZE
Language	英语
WOS Research Area	Chemistry ; Science & Technology - Other Topics ; Materials Science
Publisher	ELSEVIER
Citation statistics	Cited Times:9[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28411
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Zhou, XJ,Tian, J,Wu, QP,et al. N/O dual-doped hollow carbon microspheres constructed by holey nanosheet shells as large-grain cathode host for high loading Li-S batteries[J]. ENERGY STORAGE MATERIALS,2020:644.
APA	Zhou, XJ,Tian, J,Wu, QP,Hu, JL,&Li, CL.(2020).N/O dual-doped hollow carbon microspheres constructed by holey nanosheet shells as large-grain cathode host for high loading Li-S batteries.ENERGY STORAGE MATERIALS,644.
MLA	Zhou, XJ,et al."N/O dual-doped hollow carbon microspheres constructed by holey nanosheet shells as large-grain cathode host for high loading Li-S batteries".ENERGY STORAGE MATERIALS (2020):644.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院上海硅酸盐研究所机构知识库