Magnetic biochar obtained through catalytic pyrolysis of macroalgae: A promising anode material for Li-ion batteries

Pejman Salimi, Omid Norouzi, S.E.M. Pourhoseini, Pietro Bartocci, Ahmad Tavasoli, Francesco Di Maria, S.M. Pirbazari, Gianni Bidini and Francesco Fantozzi

Renewable Energy, 2019, vol. 140, issue C, 704-714

Abstract: In this work, Cladophora glomerata, a harmful seaweed, is converted into an olive-shaped magnetic biochar by a slow pyrolysis process catalyzed by iron. The resultant magnetic biochar has a high surface area of 296.4 m2 g−1 with a carbon-rich structure that makes it suitable to be used as an electrode in Li-ion batteries. The catalytic pyrolysis process showed significant effect on steam reforming, ketonization and deoxygenation and/or denitrogenation reactions. The overall quality of the pyrolysis products increases: the gas contains a higher percentage of hydrogen (up to 22%), while the oil is enriched in furans (with a selectivity of about 14%). The electrochemistry behavior of magnetic biochar has been also evaluated, using galvanostatic charge–discharge, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) analyses. The electrochemical results indicated a higher initial specific discharge capacity (740 mAh g−1) and great cyclic stability for magnetic electrode as compared to the biochar electrode.

Keywords: Pyrolysis; Magnetic biochar; Catalyst; Furans; Biochemicals; Li-ion battery (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:140:y:2019:i:c:p:704-714

DOI: 10.1016/j.renene.2019.03.077

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