What is it about?
Silicon is an attractive material for an anode in Lithium-ion batteries owing to its properties of having the highest known--charge storage capacity (4200 mAh/g). However, bulk silicon undergoes a high volume change and result in failure of batteries. In this work, we have offered the remedy to the problem- the use of Sn-Si films deposited using Plasma-Enhanced Chemical Vapour Deposition System at De Montfort University.
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Why is it important?
Electrochemical characterisation shows stable cycling at capacities of 1400 mA h g 1 (>4 the capacity limit of graphite). This hybrid system demonstrates promising electrochemical performance, can be grown at large scale and has also been successfully grown on flexible carbon paper current collectors. These findings will have impact on the development of flexible batteries and wearable energy storage.
Perspectives
It was a great pleasure to work with the WMG team on this subject. The high volume manufacturing (HVM) ESPRC fellowship provided me an opportunity to work on this topically important subject, which I thoroughly enjoyed.
Professor Shashi Paul
De Montfort University
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This page is a summary of: Binder-free Sn–Si heterostructure films for high capacity Li-ion batteries, RSC Advances, January 2018, Royal Society of Chemistry,
DOI: 10.1039/c7ra13489d.
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