Issue 15, 2024

Rational synthesis of macroporous nanocarbon with phosphorus-doping from pitch for high-rate sodium ion batteries

Abstract

The cost-effectiveness and abundance of sodium make sodium-ion batteries a compelling alternative to lithium-ion batteries. The hurdle is adapting the widely used graphite anodes in lithium-ion batteries for use in sodium-ion battery anodes, given the larger size of sodium. Macroporous carbon materials emerge as promising anode candidates for sodium-ion batteries due to their favorable electrolyte penetration and structural stability. In this research, an economical and readily available high-temperature coal pitch serves as the precursor for the anode material. Sodium chloride acts as the templating agent, while phosphorus atoms are intentionally introduced through disodium hydrogen phosphate to induce defects. The phosphorus-doped macroporous carbon demonstrates noteworthy specific capacity and cycling stability, even under high current density conditions, making it a viable choice for application in sodium-ion batteries: after 1000 cycles at a current density of 5 A g−1, the reversible specific capacity still reaches 135 mA h g−1 with a capacity retention rate of 94.4%; after increasing the current density to 10 A g−1, the reversible specific capacity still exceeds 100 mA h g−1 after 3500 cycles.

Graphical abstract: Rational synthesis of macroporous nanocarbon with phosphorus-doping from pitch for high-rate sodium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
11 Jan 2024
Accepted
07 Mar 2024
First published
08 Mar 2024

New J. Chem., 2024,48, 6633-6640

Rational synthesis of macroporous nanocarbon with phosphorus-doping from pitch for high-rate sodium ion batteries

Y. Li, S. Liu, W. Sun, R. Lu, C. Liu and Q. Sun, New J. Chem., 2024, 48, 6633 DOI: 10.1039/D4NJ00178H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements