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Honeycomb-inspired design of ultrafine SnO2@C nanospheres embedded in carbon film as anode materials for high performance lithium- and sodium-ion battery
Huazhong University of Science and Technology, Peoples R China.
Huazhong University of Science and Technology, Peoples R China.
Huazhong University of Science and Technology, Peoples R China.
Huazhong University of Science and Technology, Peoples R China.
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2017 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 359, 340-348 p.Article in journal (Refereed) Published
Abstract [en]

Tin oxide (SnO2) has been considered as one of the most promising anodes for advanced rechargeable batteries due to its advantages such as high energy density, earth abundance and environmental friendly. However, its large volume change during the Li-Sn/Na-Sn alloying and de-alloying processes will result in a fast capacity degradation over a long term cycling. To solve this issue, in this work we design and synthesize a novel honeycomb-like composite composing of carbon encapsulated SnO2 nanospheres embedded in carbon film by using dual templates of SiO2 and NaCl. Using these composites as anodes both in lithium ion batteries and sodium-ion batteries, no discernable capacity degradation is observed over hundreds of long term cycles at both low current density (100 mA g(-1)) and high current density (500 mA g(-1)). Such a good cyclic stability and high delivered capacity have been attributed to the high conductivity of the supported carbon film and hollow encapsulated carbon shells, which not only provide enough space to accommodate the volume expansion but also prevent further aggregation of SnO2 nanoparticles upon cycling. By engineering electrodes of accommodating high volume expansion, we demonstrate a prototype to achieve high performance batteries, especially high-power batteries. (C) 2017 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2017. Vol. 359, 340-348 p.
Keyword [en]
Tin oxide; Honeycomb-inspired; Lithium ion batteries; Sodium-ion batteries
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-139176DOI: 10.1016/j.jpowsour.2017.05.064ISI: 000403548200041OAI: oai:DiVA.org:liu-139176DiVA: diva2:1120203
Note

Funding Agencies|National Natural Science Foundation of China (NSFC) [51502099, 51571096, 61405026]; Natural Science Foundation of Hubei Province [2016CFB129]; Fundamental Research Funds for the Central Universities [HUST: 2016YXMS211]; Swedish Research Councils [Vetenskapsradet: 621-2014-5461, Formas: 2016-00559]; Aforsk foundation [16399]

Available from: 2017-07-05 Created: 2017-07-05 Last updated: 2017-07-05

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CiteExportLink to record
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Citation style
  • apa
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