Issue 17, 2025

Multifunctional PANI/Ti3C2Tx MXene nanocomposites for enhancing Na–S battery performance

Abstract

The application of PANI/MXene as an interlayer maintains a capacity retention rate of 94.7% after 500 cycles at a current density of 1C (C = 1675 mAh g−1) in practical sodium–sulfur (Na–S) batteries. In comparison, the cell with MXene interlayer demonstrates a reversible capacity retention rate of merely 71.8% after the same number of cycles, which is lower than the cell with PANI/MXene. The cell with PANI/MXene separator exhibited capacities of 931.2 mAh g−1 and 701.2 mAh g−1 at a current density of 1C and 2C, respectively. When the current density was returned to 1C and 0.5C, the capacities were maintained at 728.5 mAh g−1 and 917.5 mAh g−1, respectively, indicating a capacity recovery rate of 98.4%.The EDX maps reveal a uniform distribution of the key elements that make up the MXene nanosheets, including Ti, C, N, and O alongside with S, which proved the agglomeration of polysulfides species on the separator surface after 500 cycles. The enhanced adsorption of polysulfide chains in PANI/MXene as an interlayer in Na–S batteries could open a new avenue as a promising separator for the next generation of high-performance Na–S batteries.

Graphical abstract: Multifunctional PANI/Ti3C2Tx MXene nanocomposites for enhancing Na–S battery performance

Article information

Article type
Paper
Submitted
11 May 2025
Accepted
21 Jul 2025
First published
30 Jul 2025

Catal. Sci. Technol., 2025,15, 5167-5176

Multifunctional PANI/Ti3C2Tx MXene nanocomposites for enhancing Na–S battery performance

N. Aslfattahi, M. S. Kiai, D. Karatas, N. Baydogan, L. Samylingam, K. Kadirgama and C. K. Kok, Catal. Sci. Technol., 2025, 15, 5167 DOI: 10.1039/D5CY00564G

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