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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

文献类型：期刊论文

作者Hu, Qianqian2,3,4,5,6; Lu, Jiqun2,4,5,6; Yang, Chun2,4,5,6; Zhang, Congcong2,4,5,6; Hu, Jinlong2,4,5,6; Chang, Shiyong3; Dong, Haiyong3; Wu, Chunyu3; Hong, Ye1; Zhang, Lingzhi2,4,5,6
刊名SMALL
出版日期2020-07-22
页码10
关键词cobalt disulfide hierarchical porous graphitic carbon polysulfide-trapping shield reversible redox kinetics self-discharge rate
ISSN号1613-6810
DOI10.1002/smll.202002046
通讯作者Hong, Ye(hongye2016@163.com) ; Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
英文摘要Main 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.
WOS关键词LITHIUM-SULFUR BATTERIES ; SURFACE ; PERFORMANCE ; COMPOSITE ; GRAPHENE ; PROGRESS ; CATHODE
资助项目K.C. Wong Education Foundation ; National Natural Science Foundation of China[21573239] ; Guangzhou Automobile Group, China
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000550886100001
出版者WILEY-V C H VERLAG GMBH
资助机构K.C. Wong Education Foundation ; National Natural Science Foundation of China ; Guangzhou Automobile Group, China
源URL[http://ir.giec.ac.cn/handle/344007/27511]  
专题中国科学院广州能源研究所
通讯作者Hong, Ye; Zhang, Lingzhi
作者单位1.Guangdong Polytech Normal Univ, Ind Training Ctr, Guangzhou 510665, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.GAC Automot Res & Dev Ctr, Guangzhou 511434, Peoples R China
4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
5.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
6.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：广州能源研究所

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