气候变化领域集成服务门户(CCPortal): Scalable and controllable fabrication of CNTs improved yolk-shelled Si anodes with advanced in operando mechanical quantification

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DOI	10.1039/d1ee00639h
	Scalable and controllable fabrication of CNTs improved yolk-shelled Si anodes with advanced in operando mechanical quantification
	Zhang L.; Huang Q.; Liao X.; Dou Y.; Liu P.; Al-Mamun M.; Wang Y.; Zhang S.; Zhao S.; Wang D.; Meng G.; Zhao H.
发表日期	2021
ISSN	17545692
起始页码	3502
结束页码	3509
卷号	14 期号:6
英文摘要	Yolk-shelled silicon/carbon materials (YS-Si/C) are the most promising anode candidates to further improve the energy density of commercial lithium-ion batteries. Yet, limited conductive promotion and low tap density resulting from hollow spaces, and complex fabrication processes caused by employing various templating methods, are still critical issues for practical applications of YS-Si/C. In this work, a suite of YS-Si/C anode materials with confined Si-yolks by the C-shell without and with carbon nanotubes (each confines a Co3O4nanoparticle on its tip) on the outer, inner and both sides of the C-shell were facilely and controllably synthesised. The best YS-Si/C anode with carbon nanotubes on both sides of the C-shell can achieve an excellent reversible capacity of 220 mAh g-1under 40.0 A g-1with 100% reversible capacity retention after 1200 cycles. Importantly, an electrochemical transmission electron microscope measurement system was assembled and applied for the concurrent in operando quantification of the exerted mechanical force and real-time structural responses of YS-Si/C during lithiation/delithiation and Li dendrite formation/dissolution processes, which can be used to gain new insights into the phenomenological structural changes, providing valuable guidance for the rational structural design of high-performance electrode materials. © The Royal Society of Chemistry 2021.
英文关键词	Carbon nanotubes; Fabrication; Lithium metallography; Lithium-ion batteries; Silicon; Structural design; Transmission electron microscopy; Dendrite formation; Electrode material; Fabrication process; Lithiation/delithiation; Measurement system; Reversible capacity; Structural response; Templating method; Anodes; carbon nanotube; dissolution; electrochemistry; electrode; equipment component; lithium; performance assessment; silicon
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/190645
作者单位	Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, Gold Coast, QLD 4222, Australia; Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, P. O. Box 1129, Hefei, 230031, China; School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW 2006, Australia; State Key Laboratory of Biochemical Engineering, CAS Center for Excellence in Nanoscience, Institute of Process Engineering, Chinese Academy of Sciences, No. 1 Beiertiao, Zhongguancun, Beijing, 100190, China
推荐引用方式 GB/T 7714	Zhang L.,Huang Q.,Liao X.,et al. Scalable and controllable fabrication of CNTs improved yolk-shelled Si anodes with advanced in operando mechanical quantification[J],2021,14(6).
APA	Zhang L..,Huang Q..,Liao X..,Dou Y..,Liu P..,...&Zhao H..(2021).Scalable and controllable fabrication of CNTs improved yolk-shelled Si anodes with advanced in operando mechanical quantification.Energy & Environmental Science,14(6).
MLA	Zhang L.,et al."Scalable and controllable fabrication of CNTs improved yolk-shelled Si anodes with advanced in operando mechanical quantification".Energy & Environmental Science 14.6(2021).