Issue 16, 2022

Nanoconfining red phosphorus within MOF-derived hierarchically porous carbon networks for high performance potassium storage

Abstract

Red phosphorus is a kind of promising anode material for potassium-ion batteries owing to its ideal theoretical capacity. Unfortunately, its wide application in potassium storage is greatly limited by the poor electrical conductivity and severe volume expansion in the electrochemical reaction process of red phosphorus. Combining red phosphorus with a porous carbon substrate is a potential approach to enhance the potassium storage performance of red phosphorus, which can greatly promote the mass/charge transfer process and ease the volume change. Herein, hierarchically porous carbon networks were fabricated by two-step pyrolysis to confine red phosphorus (P@HPCN) with outstanding specific capacity, rate capability and cycling performance for potassium storage. The resultant anode material delivered reversible capacities of 461.8 mA h g−1 at 0.1 A g−1 after 100 cycles and 155.7 mA h g−1 at 1 A g−1 after 2000 cycles. Further experiments implied that the ideal electrochemical performance of P@HPCN could be associated with the synergism between red phosphorus and hierarchically porous carbon networks. Moreover, combining with theoretical calculations, we found that secondary calcination could effectively remove pyrrolic and pyridinic nitrogen from the porous carbon component, leading to a higher phosphorus loading.

Graphical abstract: Nanoconfining red phosphorus within MOF-derived hierarchically porous carbon networks for high performance potassium storage

Supplementary files

Article information

Article type
Research Article
Submitted
24 Mac 2022
Accepted
05 Jul 2022
First published
13 Jul 2022

Mater. Chem. Front., 2022,6, 2184-2189

Nanoconfining red phosphorus within MOF-derived hierarchically porous carbon networks for high performance potassium storage

J. Cheng, Z. Liang, Y. Wu, D. Wang, T. Qiu, Y. Tang, J. Shi, D. Xia and R. Zou, Mater. Chem. Front., 2022, 6, 2184 DOI: 10.1039/D2QM00261B

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