Promoting Reversible Redox Kinetics by Separator Architectures Based on CoS2/HPGC Interlayer as Efficient Polysulfide-Trapping Shield for Li-S Batteries

doi:10.1002/smll.202002046

GIEC OpenIR

	Promoting Reversible Redox Kinetics by Separator Architectures Based on CoS2/HPGC Interlayer as Efficient Polysulfide-Trapping Shield for Li-S Batteries
	Hu, Qianqian 1,2,3,4,5; Lu, Jiqun 1,2,3,5; Yang, Chun 1,2,3,5; Zhang, Congcong 1,2,3,5; Hu, Jinlong 1,2,3,5; Chang, Shiyong 4; Dong, Haiyong 4; Wu, Chunyu 4; Hong, Ye 6; Zhang, Lingzhi1,2,3,5
	2020-07-22
发表期刊	SMALL
ISSN	1613-6810
页码	10
通讯作者	Hong, Ye(hongye2016@163.com) ; Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
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.
关键词	cobalt disulfide hierarchical porous graphitic carbon polysulfide-trapping shield reversible redox kinetics self-discharge rate
DOI	10.1002/smll.202002046
关键词[WOS]	LITHIUM-SULFUR BATTERIES ; SURFACE ; PERFORMANCE ; COMPOSITE ; GRAPHENE ; PROGRESS ; CATHODE
收录类别	SCI
语种	英语
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
项目资助者	K.C. Wong Education Foundation ; National Natural Science Foundation of China ; Guangzhou Automobile Group, China
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000550886100001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：60[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/27512
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.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
第一作者单位	中国科学院广州能源研究所
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.