Beyond yolk-shell nanoparticles: Fe3O4@Fe3C Core@Shell nanoparticles as yolks and carbon nanospindles as shells for efficient lithium ion storage

NCUIR > College of Earth Sciences > Department of Atmospheric Sciences > journal & Dissertation > Item 987654321/100500

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/100500

Title:	Beyond yolk-shell nanoparticles: Fe3O4@Fe3C Core@Shell nanoparticles as yolks and carbon nanospindles as shells for efficient lithium ion storage
Authors:	鄭芳怡;Zhang, Jianan;Wang, Kaixi;Xu, Qun;Zhou, Yunchun;Cheng, Fangyi;Guo, Shaojun
Contributors:	地球科學學院大氣科學學系
Date:	2015-03-24
Issue Date:	2026-04-21 14:04:33 (UTC+8)
Publisher:	American Chemical Society;United States: American Chemical Society
Abstract:	摘要： To well address the problems of large volume change and dissolution of Fe3O4 nanomaterials during Li+ intercalation/extraction, herein we demonstrate a one-step in situ nanospace-confined pyrolysis strategy for robust yolk–shell nanospindles with very sufficient internal void space (VSIVS) for high-rate and long-term lithium ion batteries (LIBs), in which an Fe3O4Fe3C coreshell nanoparticle is well confined in the compartment of a hollow carbon nanospindle. This particular structure can not only introduce VSIVS to accommodate volume change of Fe3O4 but also afford a dual shell of Fe3C and carbon to restrict Fe3O4 dissolution, thus providing dual roles for greatly improving the capacity retention. As a consequence, Fe3O4Fe3C–C yolk–shell nanospindles deliver a high reversible capacity of 1128.3 mAh g–1 at even 500 mA g–1, excellent high rate capacity (604.8 mAh g–1 at 2000 mA g–1), and prolonged cycling life (maintaining 1120.2 mAh g–1 at 500 mA g–1 for 100 cycles) for LIBs, which are much better than those of Fe3O4C coreshell nanospindles and Fe3O4 nanoparticles. The present Fe3O4Fe3C–C yolk–shell nanospindles are the most efficient Fe3O4-based anode materials ever reported for LIBs. 其他題名： ACS Nano 出版者： United States: American Chemical Society 出版日期： 2015-03-24 出處： ACS nano, 2015-03, Vol.9 (3), p.3369-3376 資源來源： American Chemical Society Journals 版權： Copyright © 2015 American Chemical Society 識別號： ISSN: 1936-0851 識別號： ISSN: 1936-086X 識別號： EISSN: 1936-086X 識別號： DOI: 10.1021/acsnano.5b00760 識別號： PMID: 25716070
Appears in Collections:	[Department of Atmospheric Sciences] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	18	View/Open

社群 sharing

Loading...