Synthesis of silicon oxycarbonitride nanosphere as cathode host for lithium-sulfur batteries

doi:10.1016/j.jallcom.2020.157903

	Synthesis of silicon oxycarbonitride nanosphere as cathode host for lithium-sulfur batteries
	Lu, Jiqun 1,2,3; Hu, Jinlong 2; Zhong, Haoxiang 2; Ren, Yilun 2; Zhang, Lingzhi 2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-04-15
卷号	860 页码:10
关键词	Silicon oxycarbonitride SiOCN Lithium-sulfur battery Physical and chemical adsorption Lithium polysulfide shuttling
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2020.157903
通讯作者	Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
英文摘要	Silicon oxycarbonitride (SiOCN) composites with different carbon contents were synthesized by pyrolysis of precursors generated from aldimine condensation of 3-aminopropyltriethoxysilane (APTES) with different aldehydes and simultaneous hydrolysis of APTES. Both SiOCN-1 and SiOCN-5 composites, derived from formaldehyde and glutaraldehyde respectively, display similar bulky structure composed by aggregated nanospheres with a diameter of 70-100 nm. SiOCN-5 has a higher carbon content of 30.4% than 15.9% for SiOCN-1, while a lower specific surface area of 38.2 m(2) g(-1) than 76.0 m(2) g(-1) for SiOCN-1. SiOCN/S cathodes with sulfur loading of 1.2-1.5 mg cm(-2) were fabricated using SiOCN as sulfur host on different current collector of aluminum foil (AL) or carbon paper (CP). When using aluminum foil as current collector, SiOCN-5/S-AL cathode exhibits better electrochemical performance than SiOCN-1/S-AL, primarily due to the higher electrical conductivity of SiOCN-5 comparing with SiOCN-1. When using porous carbon paper as current collector, SiOCN-5/S-CP cathode shows the best cycling performance with a discharge capacity of 648.9 mA h g(-1) at 0.2C after 100 cycles. Even at a high rate of 1C, SiOCN-5/SCP also exhibits an excellent cycling stability, delivering a reversible discharge capacity of 374.5 mA h g(-1) after 500 cycles with a capacity retention of 73.0%. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[21573239] ; K.C. Wong Education Foundation
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000614154600008
资助机构	National Natural Science Foundation of China ; K.C. Wong Education Foundation
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32565]
专题	中国科学院广州能源研究所
通讯作者	Zhang, Lingzhi
作者单位	1.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jiqun,Hu, Jinlong,Zhong, Haoxiang,et al. Synthesis of silicon oxycarbonitride nanosphere as cathode host for lithium-sulfur batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,860:10.
APA	Lu, Jiqun,Hu, Jinlong,Zhong, Haoxiang,Ren, Yilun,&Zhang, Lingzhi.(2021).Synthesis of silicon oxycarbonitride nanosphere as cathode host for lithium-sulfur batteries.JOURNAL OF ALLOYS AND COMPOUNDS,860,10.
MLA	Lu, Jiqun,et al."Synthesis of silicon oxycarbonitride nanosphere as cathode host for lithium-sulfur batteries".JOURNAL OF ALLOYS AND COMPOUNDS 860(2021):10.