Issue 35, 2024

Structurally oriented black phosphorus/MXene heterostructured fibers for flexible supercapacitors with enhanced ion transport and capacitive charge storage

Abstract

The development of flexible MXene-based fiber supercapacitors (FSCs) with high conductivity and high specific capacitance has become a research hotspot. However, the assembly of nanosheets into macroscopic fibers with a regular arrangement and the phenomenon of nanosheet restacking remain a huge challenge, which limit the practical application of flexible MXene-based FSCs. In this paper, structurally oriented BP/Ti3C2Tx heterostructured fibers have been successfully prepared by a wet-spinning process, and their ordered channel shortened the ion transport path. Black phosphorus (BP) in BP/Ti3C2Tx can not only effectively prevent the restacking of MXene nanosheets, but also greatly improve the mechanical strength (401 MPa) and electrical conductivity (6019 S cm−1), and achieve a pseudocapacitor charge storage capacity of 383.9 F g−1. In addition, the energy density and power density of FSCs assembled with heterostructured fibers can reach 5.1 mW h g−1 and 175 mW g−1, respectively. This work provides a reference for the development of high-performance flexible MXene-based FSCs.

Graphical abstract: Structurally oriented black phosphorus/MXene heterostructured fibers for flexible supercapacitors with enhanced ion transport and capacitive charge storage

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Article information

Article type
Paper
Submitted
06 Jun 2024
Accepted
08 Jul 2024
First published
10 Jul 2024

J. Mater. Chem. A, 2024,12, 23436-23446

Structurally oriented black phosphorus/MXene heterostructured fibers for flexible supercapacitors with enhanced ion transport and capacitive charge storage

K. Quan, Y. Li, P. Xu, J. Wu and S. Xu, J. Mater. Chem. A, 2024, 12, 23436 DOI: 10.1039/D4TA03914A

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