CAS OpenIR
A Polysulfides-Confined All-in-One Porous Microcapsule Lithium-Sulfur Battery Cathode
Liu, Jinyun1; Zhu, Mengfei1; Shen, Zihan2; Han, Tianli1; Si, Ting3; Hu, Chaoquan4; Zhang, Huigang2
2021-09-12
Source PublicationSMALL
ISSN1613-6810
Pages10
AbstractDeveloping emerging materials for high energy-density lithium-sulfur (Li-S) batteries is of great significance to suppress the shuttle effect of polysulfides and to accommodate the volumetric change of sulfur. Here, a novel porous microcapsule system containing a carbon nanotubes/tin dioxide quantum dots/S (CNTs/QDs/S) composite core and a porous shell prepared through a liquid-driven coaxial microfluidic method as Li-S battery cathode is developed. The encapsulated CNTs in the microcapsules provide pathways for electron transport; SnO2 QDs on CNTs immobilize the polysulfides by strong adsorption, which is verified by using density functional theory calculations on binding energies. The porous shell of the microcapsule is beneficial for ion diffusion and electrolyte penetration. The void inside the microcapsule accommodates the volumetric change of sulfur. The Li-S battery based on the porous CNTs/QDs/S microcapsules displays a high capacity of 1025 mAh g(-1) after 100 cycles at 0.1 C. When the sulfur loading is 2.03 mg cm(-2), the battery shows a stable cycling life of 700 cycles, a Coulombic efficiency exceeding 99.9%, a recoverable rate-performance during repeated tests, and a good temperature tolerance at both -5 and 45 degrees C, which indicates a potential for applications at different conditions.
Keywordadsorption energies carbon nanotubes microcapsules quantum dots secondary batteries
DOI10.1002/smll.202103051
Language英语
WOS KeywordRATIONAL DESIGN ; CARBON ; COMPOSITE ; KINETICS ; NITROGEN ; HYBRID ; HOST
Funding ProjectScience and Technology Major Project of Anhui Province[18030901093] ; Key Research and Development Program of Wuhu[2019YF07] ; National Natural Science Foundation of China[21776121]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationScience and Technology Major Project of Anhui Province ; Key Research and Development Program of Wuhu ; National Natural Science Foundation of China
WOS IDWOS:000695037900001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50157
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Jinyun; Hu, Chaoquan; Zhang, Huigang
Affiliation1.Anhui Normal Univ, Anhui Prov Engn Lab New Energy Vehicle Battery En, Coll Chem & Mat Sci, Key Lab Funct Mol Solids,Minist Educ, Wuhu 241002, Anhui, Peoples R China
2.Nanjing Univ, Coll Engn & Appl Sci, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
3.Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Anhui, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jinyun,Zhu, Mengfei,Shen, Zihan,et al. A Polysulfides-Confined All-in-One Porous Microcapsule Lithium-Sulfur Battery Cathode[J]. SMALL,2021:10.
APA Liu, Jinyun.,Zhu, Mengfei.,Shen, Zihan.,Han, Tianli.,Si, Ting.,...&Zhang, Huigang.(2021).A Polysulfides-Confined All-in-One Porous Microcapsule Lithium-Sulfur Battery Cathode.SMALL,10.
MLA Liu, Jinyun,et al."A Polysulfides-Confined All-in-One Porous Microcapsule Lithium-Sulfur Battery Cathode".SMALL (2021):10.
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