气候变化领域集成服务门户(CCPortal): Structure-designed synthesis of FeS2@C yolk-shell nanoboxes as a high-performance anode for sodium-ion batteries

CCPortal

DOI	10.1039/c7ee01100h
	Structure-designed synthesis of FeS2@C yolk-shell nanoboxes as a high-performance anode for sodium-ion batteries
	Liu Z.; Lu T.; Song T.; Yu X.-Y.; Lou X.W.; Paik U.
发表日期	2017
ISSN	17545692
起始页码	1576
结束页码	1580
卷号	10 期号:7
英文摘要	Pyrite (FeS2) is an attractive anode material for sodium-ion batteries (SIBs) with a high theoretical capacity of 894 mAh g-1. However, its practical application is greatly hindered by the rapid capacity fading caused by the large volume expansion upon sodiation. Tuning the morphology and structure at nanoscale and applying a higher cut-off voltage are essential to address this issue. Here, a facile etching method coupled with a novel sulfidation-in-nanobox strategy is developed to synthesize unique FeS2@C yolk-shell nanoboxes. The as-obtained FeS2@C nanoboxes reveal excellent sodium storage performance. The remarkable electrochemical properties are attributed to the elaborate yolk-shell nanoarchitecture. In particular, it delivers a high specific capacity of 511 mAh g-1 at 100 mA g-1 after 100 cycles. Furthermore, a high specific capacity of 403 mAh g-1 even at 5 A g-1 is delivered. Most impressively, a stable capacity of 330 mAh g-1 can still be retained at 2 A g-1 even after 800 cycles. © The Royal Society of Chemistry 2017.
英文关键词	Anodes; Electric batteries; Electrodes; Cut-off voltages; High specific capacity; High-performance anodes; Morphology and structures; Nano-architecture; Sodium ion batteries; Storage performance; Theoretical capacity; Secondary batteries; design; electrochemical method; electrode; electronic equipment; inorganic compound; nanoparticle; nanotechnology; performance assessment; physicochemical property; pyrite; sodium
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190451
作者单位	Department of Energy Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, South Korea; School of Materials Science and Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea; Department of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310000, China; School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
推荐引用方式 GB/T 7714	Liu Z.,Lu T.,Song T.,et al. Structure-designed synthesis of FeS2@C yolk-shell nanoboxes as a high-performance anode for sodium-ion batteries[J],2017,10(7).
APA	Liu Z.,Lu T.,Song T.,Yu X.-Y.,Lou X.W.,&Paik U..(2017).Structure-designed synthesis of FeS2@C yolk-shell nanoboxes as a high-performance anode for sodium-ion batteries.Energy & Environmental Science,10(7).
MLA	Liu Z.,et al."Structure-designed synthesis of FeS2@C yolk-shell nanoboxes as a high-performance anode for sodium-ion batteries".Energy & Environmental Science 10.7(2017).