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MXene : An Evolving 2-Dimensional Interlayer Material for Supercapacitors

Sunday, 29 May 2022: 10:40
West Meeting Room 211 (Vancouver Convention Center)
M. Sharma and A. Bhargav (Indian Institute of Technology Gandhinagar, Gujarat, India)
In recent years, two-dimensional (2D) nanomaterials have emerged as significant building sections for varied structures due to their extraordinary physical and chemical properties arising from their 2D morphologies and ultrahigh surface areas.1 The resultant materials worked well as electrodes materials for battery, supercapacitors, and oxygen reduction reaction electrocatalysts.2 Provided these benefits, incorporating pores/layers into innovative 2D materials has emerged as a promising and cost-effective way to improve their performance in energy-related application domains.

A new family of two-dimensional transition metal (M) carbides or nitrides (X) known as 2D MXene has lately been discovered. Ti3C2Tx (MXene) is a promising electrode material for SCs due to its excellent physical and chemical properties. The use of pure MXenes in various classes of SCs is increasing significantly due to their incredibly high electronic conductivity 10,000 S cm-1, unique mechanical properties, high charge storage capacity, and efficient processing capability, which helps to use MXene as a promising candidate for supercapacitors electrodes.3 However, MXene-based SC development is still in its early stages, with electrode materials, appropriate electrolytes, substrates, and various other factors still to be optimised.4 Many obstacles, such as restacking, re-crushing, and titanium oxidation, must be overcome for Ti3C2Tx to achieve the ideal specific capacitance.

Here, Titanium carbide (Ti3C2) is developed via a relatively simple and rapid chemical method to introduce low defects and high quality while keeping the stacking and interlayer spacers intact. A thorough examination of the synthesis of MXenes and the factors influencing energy storage in supercapacitor grounds has been carried. We begin by synthesising MXene using various methods and investigating their effects on the structure and surface chemistry of MXenes. The morphological traits, structural, elemental, and specific surface area analysis of the fabricated electrode were performed using a field emission scanning electron microscope (SEM), x-ray powder diffraction (XRD), energy-dispersive spectroscopy (EDX), and the Brunauer–Emmett–Teller (BET) measurement technique. We are testing and examining the capacitive behaviour of Ti3C2 using electrochemical analysis to develop a better understanding of the capacitive energy-storage mechanisms and the factors influencing electrochemical performance in supercapacitors. This work demonstrates the role of MXene (Ti3C2) in pushing energy storage devices towards better implementation and new designs to handle the associated drawbacks carefully.

Keywords: MXene, Energy Storage, 2D materials

References:

  1. Li, L.Zhang, L. Shi, and P. Wang, MXene Ti3C2: an effective 2D light-to-heat conversion material, ACS nano., 2017, 11, 3752-3759.
  2. Nam, J.N. Kim, S. Oh, J. Kim, C.W. Ahn, and I.K. Oh, Ti3C2Tx MXene for wearable energy devices: Supercapacitors and triboelectric nanogenerators, APL Material., 2020,8, 110701.
  3. Anasori, M.R. Lukatskaya, and Y. Gogotsi, 2D metal carbides and nitrides (MXenes) for energy storage, Nature Reviews Materials., 2017, 2,1-17.
  4. Wang, Y. Li, S. Wang, F. Zhou, P. Das, C. Sun, S. Zheng and Z.S. Wu, MXene for energy storage: present status and future perspectives, Journal of Physics: Energy., 2020, 2, 032004.