Skip to main content

Electrocatalytic Assisted Performance Enhancement for the Na-S Battery in Nitrogen-Doped Carbon Nanospheres Loaded with Fe.

Zhu, J., Abdelkader, A.M., Demko, D., Deng, L., Zhang, P., He, T., Wang, Y. and Huang, L., 2020. Electrocatalytic Assisted Performance Enhancement for the Na-S Battery in Nitrogen-Doped Carbon Nanospheres Loaded with Fe. Molecules, 25 (7), 1585.

Full text available as:

[img]
Preview
PDF (OPEN ACCESS ARTICLE)
molecules-25-01585.pdf - Published Version
Available under License Creative Commons Attribution.

2MB

DOI: 10.3390/molecules25071585

Abstract

Room temperature sodium-sulfur batteries have been considered to be potential candidates for future energy storage devices because of their low cost, abundance, and high performance. The sluggish sulfur reaction and the "shuttle effect" are among the main problems that hinder the commercial utilization of room temperature sodium-sulfur batteries. In this study, the performance of a hybrid that was based on nitrogen (N)-doped carbon nanospheres loaded with a meagre amount of Fe ions (0.14 at.%) was investigated in the sodium-sulfur battery. The Fe ions accelerated the conversion of polysulfides and provided a stronger interaction with soluble polysulfides. The Fe-carbon nanospheres hybrid delivered a reversible capacity of 359 mAh·g-1 at a current density of 0.1 A·g-1 and retained a capacity of 180 mAh·g-1 at 1 A·g-1, after 200 cycles. These results, combined with the excellent rate performance, suggest that Fe ions, even at low loading, are able to improve the electrocatalytic effect of carbon nanostructures significantly. In addition to Na-S batteries, the new hybrid is anticipated to be a strong candidate for other energy storage and conversion applications such as other metal-sulfur batteries and metal-air batteries.

Item Type:Article
ISSN:1420-3049
Uncontrolled Keywords:catalytic activity ; chemical absorption ; hollow N-doped carbon nanospheres ; polysulfides ; sodium-sulfur battery
Group:Faculty of Science & Technology
ID Code:33845
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:06 Apr 2020 15:00
Last Modified:06 Apr 2020 15:00

Downloads

Downloads per month over past year

More statistics for this item...
Repository Staff Only -