Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 26, 2018
Previous Article Next Article

Superior lithium/potassium storage capability of nitrogen-rich porous carbon nanosheets derived from petroleum coke

Author affiliations

Abstract

Tremendous attention has been paid to carbon-based anodes for lithium-ion and potassium-ion batteries. Nevertheless, conferring high energy storage properties using carbon-based anodes is still challenging. In this work, petroleum coke-based nitrogen-doped porous carbon nanosheets (N-PCSs) were prepared using carbon nitride (g-C3N4) as both a template and nitrogen source and tested as advanced anode materials. The as-obtained N-PCSs constructed through an in situ solid-state approach possess both high capacity and excellent cycling stability. High capacities were obtained for Li-ion and K-ion batteries (407 mA h g−1 after 500 cycles at 3720 mA g−1 and 206 mA h g−1 after 300 cycles at 1000 mA g−1, respectively); these are some of the best capacities for carbon-based electrode materials and could be ascribed to the unique microstructure of the anodes, i.e., nanosheet morphology, developed porosity, ultrahigh nitrogen doping, and a high level of disorder. Meanwhile, this study represents a milestone for high-value utilization of petroleum coke and other kinds of heavy oil.

Graphical abstract: Superior lithium/potassium storage capability of nitrogen-rich porous carbon nanosheets derived from petroleum coke

Back to tab navigation

Supplementary files

Article information


Submitted
12 Apr 2018
Accepted
31 May 2018
First published
01 Jun 2018

J. Mater. Chem. A, 2018,6, 12551-12558
Article type
Paper

Superior lithium/potassium storage capability of nitrogen-rich porous carbon nanosheets derived from petroleum coke

P. Li, J. Hwang, S. Park and Y. Sun, J. Mater. Chem. A, 2018, 6, 12551
DOI: 10.1039/C8TA03340D

Social activity

Search articles by author

Spotlight

Advertisements