A High-Kinetics Sulfur Cathode with a Highly Efficient Mechanism for Superior Room-Temperature Na-S Batteries

doi:10.1002/adma.201906700

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	A High-Kinetics Sulfur Cathode with a Highly Efficient Mechanism for Superior Room-Temperature Na-S Batteries
	Yan, Zichao ; Liang, Yaru ; Xiao, Jin ; Lai, Weihong ; Wang, Wanlin ; Xia, Qingbing ; Wang, Yunxiao ; Gu, Qinfen ; Lu, Huanming ; Chou, Shu-Lei
刊名	ADVANCED MATERIALS
	2020
卷号	32 期号:8
关键词	SODIUM-SULFUR COMPOSITES PERFORMANCE CONVERSION LIQUID
DOI	10.1002/adma.201906700
英文摘要	Applications of room-temperature-sodium sulfur (RT-Na/S) batteries are currently impeded by the insulating nature of sulfur, the slow redox kinetics of sulfur with sodium, and the dissolution and migration of sodium polysulfides. Herein, a novel micrometer-sized hierarchical S cathode supported by FeS2 electrocatalyst, which is grown in situ in well-confined carbon nanocage assemblies, is presented. The hierarchical carbon matrix can provide multiple physical entrapment to polysulfides, and the FeS2 nanograins exhibit a low Na-ion diffusion barrier, strong binding energy, and high affinity for sodium polysulfides. Their combination makes it an ideal sulfur host to immobilize the polysulfides and achieve reversible conversion of polysulfides toward Na2S. Importantly, the hierarchical S cathode is suitable for large-scale production via the inexpensive and green spray-drying method. The porous hierarchical S cathode offers a high sulfur content of 65.5 wt%, and can deliver high reversible capacity (524 mAh g(-1) over 300 cycles at 0.1 A g(-1)) and outstanding rate capability (395 mAh g(-1) at 1 A g(-1) for 850 cycles), holding great promise for both scientific research and real application.
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20183]
专题	2020专题
作者单位	1.Lu, HM (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China. 2.Liu, Y (corresponding author), Wenzhou Med Univ, Sch Biomed Engn, Sch Ophthalmol & Optometry, Wenzhou 325027, Peoples R China. 3.Wang, YX 4.Chou, SL (corresponding author), Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, Innovat Campus,Squires Way, Wollongong, NSW 2500, Australia.
推荐引用方式 GB/T 7714	Yan, Zichao,Liang, Yaru,Xiao, Jin,et al. A High-Kinetics Sulfur Cathode with a Highly Efficient Mechanism for Superior Room-Temperature Na-S Batteries[J]. ADVANCED MATERIALS,2020,32(8).
APA	Yan, Zichao.,Liang, Yaru.,Xiao, Jin.,Lai, Weihong.,Wang, Wanlin.,...&Dou, Shi-Xue.(2020).A High-Kinetics Sulfur Cathode with a Highly Efficient Mechanism for Superior Room-Temperature Na-S Batteries.ADVANCED MATERIALS,32(8).
MLA	Yan, Zichao,et al."A High-Kinetics Sulfur Cathode with a Highly Efficient Mechanism for Superior Room-Temperature Na-S Batteries".ADVANCED MATERIALS 32.8(2020).