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Promoting Reversible Redox Kinetics by Separator Architectures Based on CoS2/HPGC Interlayer as Efficient Polysulfide-Trapping Shield for Li-S Batteries
Hu, Qianqian1,2,3,4,5; Lu, Jiqun1,2,3,5; Yang, Chun1,2,3,5; Zhang, Congcong1,2,3,5; Hu, Jinlong1,2,3,5; Chang, Shiyong4; Dong, Haiyong4; Wu, Chunyu4; Hong, Ye6; Zhang, Lingzhi1,2,3,5
2020-07-22
Source PublicationSMALL
ISSN1613-6810
Pages10
Corresponding AuthorHong, Ye(hongye2016@163.com) ; Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
AbstractMain obstacles from the shuttle effect and slow conversion rate of soluble polysulfide compromise the sulfur utilization and cycling life for lithium sulfur (Li-S) batteries. In pursuit of a practically viable high performance Li-S battery, a separator configuration (CoS2/HPGC/interlayer) as efficient polysulfide trapping barrier is reported. This configuration endows great advantages, particularly enhanced conductivity, promoted polysulfide trapping capability, accelerated sulfur electrochemistry, when using the functional interlayer for Li-S cells. Attributed to the above merits, such cell shows excellent cyclability, with a capacity of 846 mAh g(-1)after 250 cycles corresponding to a high capacity retention of 80.2% at 0.2 C, and 519 mAh g(-1)after 500 cycles at 1C (1C = 1675 mA g(-1)). In addition, the optimized separator exhibits a high initial areal capacity of 4.293 mAh cm(-2)at 0.1C. Moreover, with CoS2/HPGC/interlayer, the sulfur cell enables a low self-discharge rate with a very high capacity retention of 97.1%. This work presents a structural engineering of the separator toward suppressing the dissolution of soluble Li2Sn moieties and simultaneously promoting the sulfur conversion kinetics, thus achieving durable and high capacity Li-S batteries.
Keywordcobalt disulfide hierarchical porous graphitic carbon polysulfide-trapping shield reversible redox kinetics self-discharge rate
DOI10.1002/smll.202002046
WOS KeywordLITHIUM-SULFUR BATTERIES ; SURFACE ; PERFORMANCE ; COMPOSITE ; GRAPHENE ; PROGRESS ; CATHODE
Indexed BySCI
Language英语
Funding ProjectK.C. Wong Education Foundation ; National Natural Science Foundation of China[21573239] ; Guangzhou Automobile Group, China
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Funding OrganizationK.C. Wong Education Foundation ; National Natural Science Foundation of China ; Guangzhou Automobile Group, China
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000550886100001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:67[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/27512
Collection中国科学院广州能源研究所
Corresponding AuthorHong, Ye; Zhang, Lingzhi
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
4.GAC Automot Res & Dev Ctr, Guangzhou 511434, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Guangdong Polytech Normal Univ, Ind Training Ctr, Guangzhou 510665, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Hu, Qianqian,Lu, Jiqun,Yang, Chun,et al. Promoting Reversible Redox Kinetics by Separator Architectures Based on CoS2/HPGC Interlayer as Efficient Polysulfide-Trapping Shield for Li-S Batteries[J]. SMALL,2020:10.
APA Hu, Qianqian.,Lu, Jiqun.,Yang, Chun.,Zhang, Congcong.,Hu, Jinlong.,...&Zhang, Lingzhi.(2020).Promoting Reversible Redox Kinetics by Separator Architectures Based on CoS2/HPGC Interlayer as Efficient Polysulfide-Trapping Shield for Li-S Batteries.SMALL,10.
MLA Hu, Qianqian,et al."Promoting Reversible Redox Kinetics by Separator Architectures Based on CoS2/HPGC Interlayer as Efficient Polysulfide-Trapping Shield for Li-S Batteries".SMALL (2020):10.
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