Phosphonic acid-functionalized carbon nanotubes/bismuth sulfide composite with efficient electrochemical hydrogen storage performance

Abstract

In this work, phosphonic acid-functionalized carbon nanotubes/bismuth sulfide composite (PAFCN/BS) has been produced successfully by a facile solution reaction method, and it has been characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), Fourier Transform infrared spectroscopy (FT-IR) and X-ray powder diffraction (XRD). Because of the efficient synergistic effect of phosphonic acid functionalized-carbon nanotubes and bismuth sulfide, the composite displays excellent electrochemical hydrogen storage and stability performances. Furthermore, the as-synthesized composite exhibits very low charge transfer resistance which signifies fast electron transfer. Based on the facile synthesis of the composite and its excellent performance of electrochemical hydrogen storage, PAFCN/BS can stand out as a promising efficient electrode material in the field of electrochemical hydrogen storage.

GRAPHICAL ABSTRACT

Keywords:

• Phosphonic acid-functionalized carbon nanotubes
• bismuth sulfide
• composite
• electrochemical hydrogen storage

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work has been supported by the National Natural Science Foundation of China (No. 51673090, 21806070, and 51102127), the Science and Technology Development Plan from Shandong Provincial Education Department (NO.J17KA006), and the Nature Science Foundation of Shandong Province (No. ZR2018PB017).