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Spent graphite from end-of-life Li-ion batteries as a potential electrode for aluminium ion battery
School of Chemistry and Physics, Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane 4000, Australia.
Centre for Materials Science, Queensland University of Technology (QUT), 2 George Street, Brisbane 4000, Australia.
Queensland University of Technology (QUT).
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
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2020 (English)In: Sustainable Materials and Technologies, ISSN 2214-9937, article id e00230Article in journal (Refereed) Published
Abstract [en]

Graphite is central in almost all commercial Li-ion batteries (LIBs) and possesses attractive physical and chemical properties such as good ionic conductivity and layered graphitic structure. In this communication, we have demonstrated the recycling of graphite from end-of-life LIBs and the re-purposing of the recovered material for positive electrodes in next-generation aluminium-ion-batteries (AIBs). The recovered graphite possesses enlarged interlayer spacing which is shown to effectively boost Al-ion insertion/de-insertion during the charge/discharge processes. Excellent Al-ion storage performance is achieved with the capacity reaching 124 mAh g−1 at 50 mA g−1. The material retained a capacity of 55 mAh g−1 even after the applied current was increased to 500 mA g−1, showing its capability to deliver high rate performance. The charge/discharge cycling further revealed that the graphite retains 81% of its initial capacity even after 6700 cycles at a high rate of 300 mA g−1. This excellent aluminium ion storage performance makes the recovered graphite a promising positive electrode material, providing a possible solution for the recycling of huge amounts of LIB scrap. At the same time, this material aids the development of alternative sustainable battery technology, as an alternative to LIBs.

Place, publisher, year, edition, pages
2020. article id e00230
Keywords [en]
Graphite, Battery recycling, Aluminium ion battery
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:miun:diva-40062DOI: 10.1016/j.susmat.2020.e00230ISI: 000599680500003Scopus ID: 2-s2.0-85092252841OAI: oai:DiVA.org:miun-40062DiVA, id: diva2:1474742
Available from: 2020-10-09 Created: 2020-10-09 Last updated: 2022-04-29Bibliographically approved

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Patil, RohanPhadatare, Manisha R.Olin, Håkan

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