Investigation of hazelnut shells driven hard carbons as anode for sodium-ion batteriesproduced by hydrothermal carbonization method

Authors

ELİF CANBAZ
MERAL AYDIN
REZAN DEMİR ÇAKAN

DOI

10.55730/1300-0527.3312

Abstract

To be used as Na-ion battery anodes, hard carbon electrodes are synthesized from biomass, explicitly hazelnut shell (HS): via hydrothermal carbonization (HTC) followed by further pyrolysis at different temperatures (500, 750, 1000 °C). Then, the resulting hazelnut shell-based hard carbons are investigated using various methods including Fourier-transform infrared spectroscopy, scanning electron microscope, X-ray diffraction, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. The effects of binders (PVdF, Na-alginate, CMC, and PAA) on electrochemical performance are determined. The obtained composite electrodes with different binders are tested in sodium half-cell configurations. A strong correlation is recognized between carbonization temperature and electrochemical performances and structural characteristics. The better cycling performance is accomplished with the electrode carbonized at 1000 °C with Na-alginate binder. After 100 cycles, specific capacity of 232 mAh × g-1 at 0.1C current density is achieved. This work represents an economical and feasible process to convert hazelnut shells into hard carbon.

Keywords

Hard carbon, hydrothermal carbonization, sodium ion batteries, bio-waste

First Page

356

Last Page

366

Recommended Citation

CANBAZ, ELİF; AYDIN, MERAL; and ÇAKAN, REZAN DEMİR (2022) "Investigation of hazelnut shells driven hard carbons as anode for sodium-ion batteriesproduced by hydrothermal carbonization method," Turkish Journal of Chemistry: Vol. 46: No. 2, Article 7. https://doi.org/10.55730/1300-0527.3312
Available at: https://journals.tubitak.gov.tr/chem/vol46/iss2/7