A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes

doi:10.1088/1361-6528/abaa72

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院安徽光学精密机械研究所

	A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes
	Zhang, Min 5; Zhu, Mengfei 5; Zhong, Yan 5; Han, Tianli 5; Sun, Bai 3; Zhu, Shuguang 3; Gu, Cuiping 5; Kong, Lingtao 4; Zhang, Huigang 1,2; Liu, Jinyun 5
刊名	NANOTECHNOLOGY
	2020-11-06
卷号	31
关键词	nanocomposite secondary battery stability capacity immobilizing polysulfide
ISSN号	0957-4484
DOI	10.1088/1361-6528/abaa72
通讯作者	Gu, Cuiping(cpgu2008@mail.ahnu.edu.cn)
英文摘要	High-energy-density secondary batteries are required for many applications such as electric vehicles. Lithium-sulfur (Li-S) batteries are receiving broad attention because of their high theoretical energy density. However, the large volume change of sulfur during cycling, poor conductivity, and the shuttle effect of sulfides severely restrict the Li-storage performance of Li-S batteries. Herein, we present a novel core-shell nanocomposite consisting of a sulfur core and a hydrogel polypyrrole (PPy) shell, enabling an ultra-high sulfur content of about 98.4% within the composite, which greatly exceeds many other conventional composites obtained by coating sulfur onto some hosts. In addition, the void inside the core-shell structure effectively accommodates the volume change; the conductive PPy shell improves the conductivity of the composite; and PPy is able to adsorb polysulfides, suppressing the shuttle effect. After cycling for 200 cycles, the prepared S@void@PPy composite retains a stable capacity of 650 mAh g(-1), which is higher than the bare sulfur particles. The composite also exhibits a fast Li ion diffusion coefficient. Furthermore, the density functional theory calculations show the PPy shell is able to adsorb polysulfides efficiently, with a large adsorption energy and charge density transfer.
资助项目	Key Research and Development Program of Wuhu[2019YF07] ; Science and Technology Major Project of Anhui Province[18030901093] ; Natural Science Research Project for Universities in Anhui Province[KJ2018ZD034] ; Natural Science Research Project for Universities in Anhui Province[KJ2019A0502] ; Key Research and Development Plan of Anhui Province[201904A07020070] ; Anhui Normal University[2020XJ48] ; Anhui Provincial Program for Innovation and Entrepreneurship of Returnees from Overseas[2019LCX005]
WOS关键词	DOPED POROUS CARBON ; SOL-GEL ; PERFORMANCE ; POLYPYRROLE ; COMPOSITES ; GRAPHENE ; NETWORK ; NANOCOMPOSITE ; NITROGEN ; STORAGE
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000562276200001
资助机构	Key Research and Development Program of Wuhu ; Science and Technology Major Project of Anhui Province ; Natural Science Research Project for Universities in Anhui Province ; Key Research and Development Plan of Anhui Province ; Anhui Normal University ; Anhui Provincial Program for Innovation and Entrepreneurship of Returnees from Overseas
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/42922]
专题	合肥物质科学研究院_中科院安徽光学精密机械研究所
通讯作者	Gu, Cuiping
作者单位	1.Nankai Univ, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China 2.Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 3.Anhui Jianzhu Univ, Coll Environm & Energy Engn, Hefei 230601, Anhui, Peoples R China 4.Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Anhui, Peoples R China 5.Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Lab Mol Based Mat, Key Lab Funct Mol Solids,Minist Educ, Wuhu 241000, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Min,Zhu, Mengfei,Zhong, Yan,et al. A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes[J]. NANOTECHNOLOGY,2020,31.
APA	Zhang, Min.,Zhu, Mengfei.,Zhong, Yan.,Han, Tianli.,Sun, Bai.,...&Liu, Jinyun.(2020).A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes.NANOTECHNOLOGY,31.
MLA	Zhang, Min,et al."A novel sulfur@void@hydrogel yolk-shell particle with a high sulfur content for volume-accommodable and polysulfide-adsorptive lithium-sulfur battery cathodes".NANOTECHNOLOGY 31(2020).