MXene-based nanocomposite materials with other 2D materials have made a large impact in the field of energy storage, particularly in the area of supercapacitors. Combining conductive 2D MXene with other 2D materials, such as transition metal oxide, transition metal dichalcogenides, and layered double hydroxide, improves the electrochemical energy storage properties of resulting MXene-based nanocomposites. The interface of MXene and 2D nanocomposite materials allows an improved electrochemical performance for energy storage applications. In this review, state-of-the-art research progress in 2D/2D MXene-based nanocomposite synthesis, structural and morphological properties, and electrochemical performance for supercapacitors is explored. 2D MXene nanocomposites electrochemical properties in terms of specific capacitance, energy, power densities, and stability are discussed. This study shows that this rapidly developing field has an important impact on the next-generation supercapacitor.

• Keywords
• 2D materials, MAX, energy storage,
• Publication type
• Journal Article MeSH
• Review MeSH

In the past few years, aqueous zinc-metal batteries (ZMBs) have gained much attention and can be regarded as a potential alternative to lithium-metal batteries owing to their high safety, nature of abundance, and environmental sustainability. However, several challenges persist, including dendrite formation, corrosion, and unwanted side reactions, before ZMBs can be fully utilized in practical applications. To circumvent these issues, anode free zinc-metal batteries (AFZMBs) have emerged as a next-generation energy storage system. This review provides a comprehensive analysis of recent developments in AFZMBs, including their working mechanisms, advantages over conventional ZMBs, and the challenges for practical implementation. It also highlights the key strategies, including current collector modification, electrolyte engineering, and 3D printing techniques to enhance zinc deposition uniformity and cycling stability. The review also explores how 3D printing technology can revolutionize the design of advanced current collectors and zinc-rich cathodes, optimizing material utilization and enhancing battery performance. Finally, with a future perspective of AFZMBs is concluded, highlighting the need for further research to address existing bottlenecks and fully unlock their potential for next-generation energy storage.

• Keywords
• 3D printing, advantages and challenges, anode free zinc‐metal batteries, current collector, electrolyte optimization, strategies,
• Publication type
• Journal Article MeSH
• Review MeSH

The development of advanced energy storage devices is critical for various applications including robotics and portable electronics. The energy storage field faces significant challenges in designing devices that can operate effectively for extended periods while maintaining exceptional electrochemical performance. Supercapacitors, which bridge the gap between batteries and conventional capacitors, offer a promising solution due to their high power density and rapid charge-discharge capabilities. This study focuses on the fabrication and evaluation of a MXene/MnCo2O4 nanocomposite supercapacitor electrode using a simple and cost-effective electrodeposition method on a copper substrate. The MXene/MnCo2O4 nanocomposite exhibits superior electrochemical properties, including a specific capacitance of 668 F g-1, high energy density (35 Wh kg-1), and excellent cycling stability (94.6% retention over 5000 cycles). The combination of MXene and MnCo2O4 enhances the redox activity, electronic conductivity, and structural integrity of the electrode. An asymmetric supercapacitor device, incorporating MXene/MnCo2O4 as the positive electrode and Bi2O3 as the negative electrode, demonstrates remarkable performance in powering small robotics and small electronics. This work underscores the potential of MXene-based nanocomposites for high-performance supercapacitor applications, paving the way for future advancements in energy storage technologies.

• Publication type
• Journal Article MeSH