期刊
NANOMATERIALS
卷 11, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/nano11123183
关键词
hard carbons; laser irradiation; lithium-ion batteries; negative electrodes; bio-waste materials
类别
资金
- BIOFEEDSTOK Sviluppo di piattaforme tecnologiche integrate per la valorizzazione di biomasse residuali [ARS01_00985-PON R&I 2014/2020 -FSC]
- Sapienza [MA21916B755D01C9]
- Italian Ministry of Economic Development [1381]
Pyrolyzed carbons from hazelnut shells are renewable nanomaterials that can be used as sustainable negative electrodes in lithium and sodium ion batteries. Laser irradiation in acetonitrile induces significant changes in surface and morphology, benefiting the electrochemical performance of the materials in lithium half cells.
Pyrolyzed carbons from bio-waste sources are renewable nanomaterials for sustainable negative electrodes in Li- and Na-ion batteries. Here, carbon derived from a hazelnut shell has been obtained by hydrothermal processing of the bio-waste followed by thermal treatments and laser irradiation in liquid. A non-focused nanosecond pulsed laser source has been used to irradiate pyrolyzed carbon particles suspended in acetonitrile to modify the surface and morphology. Morphological, structural, and compositional changes have been investigated by microscopy, spectroscopy, and diffraction to compare the materials properties after thermal treatments as well as before and after the irradiation. Laser irradiation in acetonitrile induces remarkable alteration in the nanomorphology, increase in the surface area and nitrogen enrichment of the carbon surfaces. These materials alterations are beneficial for the electrochemical performance in lithium half cells as proved by galvanostatic cycling at room temperature.
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