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6CCVD Research

Silicon anodes for lithium-ion batteries produced from recovered kerf powders

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-01-19
JournalJournal of Power Sources
AuthorsNils P. Wagner, Artur Tron, Julian R. Tolchard, Gianluigi Noia, Martin Bellmann
InstitutionsSINTEF, Norwegian University of Science and Technology
Citations61

Abstract

Section titled ā€œAbstractā€

Silicon kerf waste from a photovoltaic silicon production process is assessed as an anode material for application as a lithium ion battery anode. In contrast to previous studies, the Si-kerf is used as-produced, with no chemical treatment or physical processing beyond solvent PEG removal. The as-produced Si-kerf performed as well as, or better than, previously reported Si-kerf anodes and is found to outperform a cleaned Si-kerf sample from blade sawing with a larger particle size. This highlights the advantage of the diamond wire cutting process, which yields relatively small particles. In half-cell testing, a cycle life >300 cycles at a capacity of 1000 mAh gāˆ’1 is achieved with high levels of FEC addition. Full-cell testing against an NMC 442 cathode resulted in specific capacities up to 150 mAh gāˆ’1 (NMC). A relatively high degree of lithium consumption arising from repeated SEI formation is present. It is concluded that pure Si-kerf is unsuitable for commercial application in Li-ion cells.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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