D-Glucose Derived Nanospheric Hard Carbon Electrodes for Room-Temperature Sodium-Ion Batteries

Electrochemical performance of nanospheric glucose derived hard carbon based electrodes, specially derived from D-glucose via hydrothermal carbonization and subsequent pyrolysis at 1100°C, has been studied in 1 M NaClO4 propylene carbonate electrolyte. High Na+ electroreduction and Na oxidation peak...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Electrochemical Society 2016-01, Vol.163 (8), p.A1619-A1626
Main Authors: Väli, R., Jänes, A., Thomberg, T., Lust, E.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electrochemical performance of nanospheric glucose derived hard carbon based electrodes, specially derived from D-glucose via hydrothermal carbonization and subsequent pyrolysis at 1100°C, has been studied in 1 M NaClO4 propylene carbonate electrolyte. High Na+ electroreduction and Na oxidation peaks were observed in cyclic voltammograms. Galvanostatic charge/discharge measurements demonstrated high specific capacity, over 300 mAh g−1 for the first cycle. After 200th cycle, a specific capacity of 160 mAh g−1 (at 50 mA g−1 cycling rate) has been calculated for the nanospheric hard carbon based half-cells. Raman spectroscopy, inductively coupled plasma mass spectrometry and energy-dispersive X-ray spectroscopy data indicated accumulation (adsorption/absorption) of Na onto/into the electrochemically polarized porous nanospheric hard carbon material. Impedance data demonstrated that electrode potential has a noticeable influence on the total polarization, and charge transfer resistance as well as on the mass transfer characteristics at the carbon|(1 M NaClO4 + propylene carbonate) electrolyte interface.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.0771608jes