Optimizing electrochemical properties of PANI@MoSe₂/Cr₂C for enhanced hydrogen evolution reaction and energy storage in asymmetric supercapacitors

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals Pub Date : 2025-01-25 DOI:10.1016/j.synthmet.2025.117838

Muhammad Asim Rauf , M. Waqas Iqbal , Muhammad Arslan Sunny , Haseebul Hassan , N.A. Ismayilova , Akbar Mohammad , Abhinav Kumar , Hussein Alrobei , Thamer Alomayri , Mohammed T. Alotaibi

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引用次数: 0

Abstract

The search for supercapacitors' high-performance electrode materials has sparked a lot of research into innovative hybrid architectures. Supercapattery devices combine the extraordinary power density and cyclic stability of supercapacitors with the high energy density of batteries. This study details synthesized and analyzed of hybrid electrode material consisting of Polyaniline (PANI) deposited on molybdenum di-selenide (MoSe₂) and chromium carbide (Cr₂C) using the hydrothermal method. XRD, SEM, and XPS confirmed well-defined PANI@MoSe₂/Cr₂C composites with a high surface area (BET). The hybridization leverages the synergistic effects of the distinct properties of PANI, MoSe₂, and Cr₂C to enhance electrochemical performance in supercapacitors. PANI@MoSe₂/Cr₂C showed higher specific capacities (1171 C/g at 10 mV/s) than PANI@MoSe₂ (1249 C g⁻¹) and PANI@Cr₂C (1578 C g^-³) in three-electrode tests. A supercapattery using PANI@MoSe₂/Cr₂C and activated carbon achieved 72.92 Wh kg^-¹ energy density and 400 W kg^-¹ power density. It also retained 86.72 % capacity and 90.67 % coulombic efficiency over 12,000 cycles. Dunn's model explained capacitive and diffusive contributions. PANI@MoSe₂/Cr₂C exhibited efficient Tafel slope of about 40.0 mV/s and low over potential of 101.41 mV are characteristics of HER activity. These characteristics demonstrate PANI@MoSe₂/Cr₂C's potential as an electrode material for future energy storage applications.

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来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.