Open Access

ARTICLE

Self-Assembled MoS₂/Graphene Oxide Hybrid Structures for High-Capacity Supercapacitors: A Scalable Approach

Mohsin Sayeed^1,*, O. P. Singh¹, Vishal Singh Chandel², Azam Raza³, Kamal Batcha Mohamed Ismail⁴, Mayur Khan⁵, Navshad Alam^6,7, Mohammad Shariq⁸

1 Department of Applied Science and Humanities, Institute of Engineering and Technology, Lucknow, Uttar Pradesh, India
2 Department of Applied Science and Humanities, Rajkiya Engineering College, Ambedkar Nagar, Uttar Pradesh, India
3 Interdisciplinary Nanotechnology Centre (INC), Zakir Husain College of Engineering & Technology (ZHCET), Aligarh Muslim University, Aligarh, Uttar Pradesh, India
4 Department of Electronics and Communication Engineering, Agni College of Technology, Chennai, Tamil Nadu, India
5 Nuclear Physics Institute of Czech Academy of Sciences, Řež 130, Husinec, Czech Republic
6 United College of Engineering and Research, Naini, Prayagraj, India
7 Department of Applied Science and Humanities, SR Institute of Management and Technology, Lucknow, Uttar Pradesh, India
8 Department of Physical Sciences, Physics Division, College of Science, Jazan University, Jazan, Saudi Arabia

* Corresponding Author: Mohsin Sayeed. Email:

Chalcogenide Letters 2026, 23(4), 5 https://doi.org/10.32604/cl.2026.079721

Received 13 February 2026; Accepted 22 April 2026; Issue published 09 May 2026

Abstract

An eco-friendly one-pot hydrothermal method was developed to synthesize molybdenum disulfide/graphene oxide (MoS₂/GO) nanocomposites for high-performance supercapacitor applications. X-ray diffraction (XRD) analysis confirmed the presence of the MoS₂ crystalline phase, with reduced peak intensities upon GO incorporation, indicating suppressed crystallite growth. Scanning electron microscopy (SEM) revealed rod-like MoS₂ structures uniformly distributed across layered GO sheets, and energy-dispersive spectroscopy (EDS) confirmed the presence of Mo, S, C, and O elements. Raman and FTIR analyses verified strong interfacial interactions between MoS₂ and GO. Brunauer–Emmett–Teller (BET) measurements revealed a mesoporous structure with a specific surface area of ~31.7 m² g⁻¹ and a pore size centered at ~4 nm, facilitating efficient ion transport. Electrochemical performance evaluated using cyclic voltammetry (CV) in 2 M KOH electrolyte demonstrated a high specific capacitance of 185 F g⁻¹ at 5 mV s⁻¹. The quasi-rectangular CV curves and symmetric charge–discharge profiles indicate a combined electric double-layer and pseudocapacitive behavior. The MoS₂/GO composite also exhibited improved charge transfer properties and superior cycling stability over 10,000 cycles compared to pristine MoS₂. Density functional theory (DFT) calculations revealed that graphene oxide has a higher density of states near the Fermi level than MoS₂, indicating enhanced quantum capacitance and faster electron-transfer kinetics. The synergistic integration of MoS₂ and GO thus improves conductivity, structural stability, and electrochemical performance. These findings highlight the potential of MoS₂/GO nanocomposites as efficient electrode materials tailored for high-performance energy storage devices.

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