Synergistic coupling of heterointerface Ni2P/Co2P nanocrystals anchored on MXene nanosheets for high-performance oxygen and hydrogen evolution reactions

Abstract

The kinetic energy barrier (Ea), which significantly decreases in the intermediate transition state of adsorption, can be modulated by designed heterointerface catalysts. The intrinsic activity can be tuned to a typical multicomponent nature. Moreover, the sheet-like structures and honeycomb voids provide abundant active sites, an advantage for ion penetration and gas production. However, a significant concern is that water splitting into hydrogen and oxygen remains challenging due to a lack of stability, poor performance, and scarcity of metals. Herein, we report that a delaminated Ti3C2 MXene acts as a substrate, synergistically interacting with a bimetallic Ni2P/Co2P heterostructure. As expected, the prepared Ni2P/Co2P_8@Ti3C2 nanoporous material exhibits good performance toward OER and HER activity. It requires only 255 and 82 mV to reach 10 mA cm−2 current density with a slight Tafel slope of 61 and 89 mV dec−1 for the OER and HER, respectively, in 1.0 M KOH electrolyte. Furthermore, the Ni2P/Co2P_8@Ti3C2 electrocatalyst shows superior stability over 60 h when applied at a constant potential of 1.50 V and −1.10 V vs. a RHE. Of interest, this work demonstrated the design of a heterointerface nanoporous material with ultrathin 2D MXene nanosheets to achieve state-of-the-art activity for practical applications and next-generation energy materials.

Graphical abstract: Synergistic coupling of heterointerface Ni2P/Co2P nanocrystals anchored on MXene nanosheets for high-performance oxygen and hydrogen evolution reactions

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
27 May 2025
Accepted
19 Aug 2025
First published
20 Aug 2025

J. Mater. Chem. C, 2025, Advance Article

Synergistic coupling of heterointerface Ni2P/Co2P nanocrystals anchored on MXene nanosheets for high-performance oxygen and hydrogen evolution reactions

X. Wu, T. Dhanasekaran, W. Han, Z. Dan, Y. Li, W. Guiling and Z. Jing, J. Mater. Chem. C, 2025, Advance Article , DOI: 10.1039/D5TC02068A

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