期刊
JOURNAL OF APPLIED ELECTROCHEMISTRY
卷 51, 期 12, 页码 1665-1673出版社
SPRINGER
DOI: 10.1007/s10800-021-01609-2
关键词
Algae; Hard Carbon; Na-ion battery; Pyrolysis
资金
- Politecnico di Milano within the CRUI-CARE Agreement
This study investigates the production of low cost and environmentally friendly anodes for sodium ion batteries using algae as a bio-source of non-graphitic Hard Carbon (HC). The results suggest that algae can be considered as an environmentally benign and sustainable high added-value material for the production of HC anodes for Na-ion batteries.
In this work, the production of low cost and environment friendly anodes for sodium ion batteries is investigated. Algae are selected as bio-source of non-graphitic Hard Carbon (HC) with open structure acting as intercalation active material for Na ions storage. Chlorella vulgaris algae were pyrolyzed at temperatures comprised between 800 and 1100 degrees C. The decomposition products have been characterized with Scanning Electrode Microscope (SEM) and X-Ray Diffraction (XRD) analyses and their structure compared to one of the synthetic commercial HC. Thermogravimetric analysis (TGA) allowed to assess the decomposition process throughout the selected temperature scan. The obtained algae-derived HC is tested as anodic material for Na-ion battery, investigating the effect of pyrolysis temperature on the electrochemical behaviour. Their performances are compared with respect to a commercial synthetic HC active material. The results allow to consider algae as an environmentally benign and sustainable high added-value material for the production of HC anodes for Na-ion batteries.
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