Constructing coral-like hierarchical porous carbon architectures with tailored pore size distribution as sulfur hosts for durable Li-S batteries

doi:10.1016/j.electacta.2021.138063

	Constructing coral-like hierarchical porous carbon architectures with tailored pore size distribution as sulfur hosts for durable Li-S batteries
	Hu, Qianqian 1,2,3,4,6; Dong, Haiyong 3; Wang, Biao 1,2,4,6; Yang, Chun 1,2,4,6; Wang, Xuyao 1,2,4,6; Lu, Jiqun 1,2,4,6; Hong, Ye 5; Zhang, Lingzhi 1,2,4,6
刊名	ELECTROCHIMICA ACTA
	2021-05-01
卷号	377 页码:9
关键词	Lithium sulfur batteries Hierarchical porous carbon Tailored porosity Durability
ISSN号	0013-4686
DOI	10.1016/j.electacta.2021.138063
通讯作者	Hong, Ye(hongye2016@163.com) ; Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
英文摘要	Structural hierarchy of porous carbon has been a key role in the sulfur hosts for lithium sulfur (Li-S) batteries. Herein, coral-like hierarchical porous carbon (HPC) is developed by a dual alkaline activation process. The production of HPC is inexpensive and scalable, which gives a great promise as sulfur host for the future application of Li-S batteries. Moreover, the as-prepared material achieves an admirable interconnected conductive network, hierarchical pore size distribution and notably high pore volume. This architecture contributes to ultrafast ion diffusion, rapid mass transport, robust electrode configuration as well as effective physical adsorption for soluble polysulfide, thus enabling a favorable scaffold for Li-S battery cathodes with high sulfur utilization and exceptionally electrochemical stability. As a consequence, the HPC based sulfur cathode manifests high areal capacity of 7.5mAh/cm(2) with a high sulfur loading and superb cycling stability over 500 cycles with lower sulfur loading. The classification of alkali significantly affects on the hierarchical porosity of the resultant carbon. And the correlation between the pore size distribution and electrochemical performance is revealed. This work offers a hierarchical material engineering of a sulfur host material for restricting the mobile polysulfide moieties, thus achieving a high efficiency and stable Li-S battery. (C) 2021 Elsevier Ltd. All rights reserved.
资助项目	K.C. Wong Education Foundation ; National Natural Science Foundation of China[21573239] ; Guangzhou Automobile Group Co., Ltd.
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000639189500004
资助机构	K.C. Wong Education Foundation ; National Natural Science Foundation of China ; Guangzhou Automobile Group Co., Ltd.
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32991]
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.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 3.GAC Automot Res & Dev Ctr, Guangzhou 511434, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Guangdong Polytech Normal Univ, Ind Training Ctr, Guangzhou 510665, 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,Dong, Haiyong,Wang, Biao,et al. Constructing coral-like hierarchical porous carbon architectures with tailored pore size distribution as sulfur hosts for durable Li-S batteries[J]. ELECTROCHIMICA ACTA,2021,377:9.
APA	Hu, Qianqian.,Dong, Haiyong.,Wang, Biao.,Yang, Chun.,Wang, Xuyao.,...&Zhang, Lingzhi.(2021).Constructing coral-like hierarchical porous carbon architectures with tailored pore size distribution as sulfur hosts for durable Li-S batteries.ELECTROCHIMICA ACTA,377,9.
MLA	Hu, Qianqian,et al."Constructing coral-like hierarchical porous carbon architectures with tailored pore size distribution as sulfur hosts for durable Li-S batteries".ELECTROCHIMICA ACTA 377(2021):9.