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Electrochemical evaluation and phase-related impedance studies on silicon–few layer graphene (FLG) composite electrode systems
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Huang, Qianye, Loveridge, Melanie, Genieser, Ronny, Lain, Michael J. and Bhagat, Rohit (2018) Electrochemical evaluation and phase-related impedance studies on silicon–few layer graphene (FLG) composite electrode systems. Scientific Reports, 8 (1). 1386. doi:10.1038/s41598-018-19929-3 ISSN 2045-2322.
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Official URL: http://dx.doi.org/10.1038/s41598-018-19929-3
Abstract
Silicon-Few Layer Graphene (Si-FLG) composite electrodes are investigated using a scalable electrode manufacturing method. A comprehensive study on the electrochemical performance and the impedance response is measured using electrochemical impedance spectroscopy. The study demonstrates that the incorporation of few-layer graphene (FLG) results in significant improvement in terms of cyclability, electrode resistance and diffusion properties. Additionally, the diffusion impedance responses that occur during the phase changes in silicon is elucidated through Staircase Potentio Electrochemical Impedance Spectroscopy (SPEIS): a more comprehensive and straightforward approach than previous state-of-charge based diffusion studies.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QD Chemistry | |||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| Library of Congress Subject Headings (LCSH): | Lithium ion batteries, Anodes -- Materials, Electrodes -- Materials, Silicon -- Electric properties, Graphene -- Electric properties, Electrochemical analysis | |||||||||
| Journal or Publication Title: | Scientific Reports | |||||||||
| Publisher: | Nature Publishing Group | |||||||||
| ISSN: | 2045-2322 | |||||||||
| Official Date: | 2018 | |||||||||
| Dates: |
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| Volume: | 8 | |||||||||
| Number: | 1 | |||||||||
| Article Number: | 1386 | |||||||||
| DOI: | 10.1038/s41598-018-19929-3 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 9 April 2018 | |||||||||
| Date of first compliant Open Access: | 9 April 2018 | |||||||||
| RIOXX Funder/Project Grant: |
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