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DOI	10.1039/c9ee03682b
	SnO2 nanoparticles anchored on carbon foam as a freestanding anode for high performance potassium-ion batteries
	Qiu H.; Zhao L.; Asif M.; Huang X.; Tang T.; Li W.; Zhang T.; Shen T.; Hou Y.
发表日期	2020
ISSN	17545692
起始页码	571
结束页码	578
卷号	13 期号:2
英文摘要	Potassium-ion batteries (PIBs) are considered as potential replacements to lithium-ion batteries for large scale energy storage applications due to abundant potassium resources and low cost. However, it is a rough road to find suitable materials with high capacity and cycling stability due to the large K ion radius. In this study, a simple method, electrodeposition, is used to anchor SnO2 nanoparticles on three dimensional carbon foam (SnO2@CF) as a freestanding anode for PIBs. The prepared freestanding SnO2@CF electrode features a three dimensional (3D) conductive carbon frame and SnO2 nanoparticles, which can enhance electron transfer, prevent SnO2 from losing electrical contact after large volume changes and facilitate electrolyte infiltration and K ion transfer. As expected, SnO2@CF delivers a high K storage specific capacity, and outstanding cycling stability (231.7 mA h g-1 after 400 cycles at 1 A g-1) and rate performance (371.4, 307.6, 247.3 and 143.5 mA h g-1 at 0.5, 1, 2 and 5 A g-1, respectively). Meanwhile, the phase transition of the SnO2@CF electrode is tracked during the charge and discharge processes in PIBs. This study provides a facile method to prepare freestanding electrode materials and a promising anode material for PIBs. © 2020 The Royal Society of Chemistry.
英文关键词	Anodes; Carbon; Electric discharges; Electrolytes; Ions; Lithium-ion batteries; Nanoparticles; Potassium; Charge and discharge; Conductive carbon; Cycling stability; Electrical contacts; Energy storage applications; Free-standing electrode; Specific capacities; Threedimensional (3-d); Foams; electrode; electrolyte; energy storage; foam; performance assessment; phase transition; potassium; tin; volume
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/189709
作者单位	Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT), Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD), Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Qiu H.,Zhao L.,Asif M.,et al. SnO2 nanoparticles anchored on carbon foam as a freestanding anode for high performance potassium-ion batteries[J],2020,13(2).
APA	Qiu H..,Zhao L..,Asif M..,Huang X..,Tang T..,...&Hou Y..(2020).SnO2 nanoparticles anchored on carbon foam as a freestanding anode for high performance potassium-ion batteries.Energy & Environmental Science,13(2).
MLA	Qiu H.,et al."SnO2 nanoparticles anchored on carbon foam as a freestanding anode for high performance potassium-ion batteries".Energy & Environmental Science 13.2(2020).