超级电容器
MXenes公司
介电谱
材料科学
循环伏安法
电化学
电极
电容
储能
复合数
电化学能量转换
电池(电)
扫描电子显微镜
化学工程
复合材料
纳米技术
化学
功率(物理)
物理
物理化学
量子力学
工程类
作者
Muhammad Mohsin Riaz,Danish Hussain,Saif Ullah Awan,Syed Rizwan,Sana Zainab,Saqlain A. Shah
标识
DOI:10.1038/s41598-024-52280-4
摘要
Abstract The increasing global demand for energy storage solutions has spurred interest in advanced materials for electrochemical energy storage devices. Transition-metal carbides and nitrides, known as MXenes, are characterized by remarkable conductivity and tunable properties, They have gained significant attention for their potential in energy storage applications. The properties of two-dimensional (2-D) MXenes can be tuned by doping or composite formation. We report a novel Ti 3 C 2 T x /NaF composite prepared via a straightforward hydrothermal process for supercapacitor electrode applications. Three composites with varying NaF concentrations (1%, 3%, and 5%) were synthesized under similar conditions. Structural characterization using X-ray diffraction (XRD) and scanning electron microscopy confirmed the successful formation of the composites, whereas distinct shifts in XRD peaks and new peaks revealed the presence of NaF. Electrochemical performance was evaluated by cyclic voltammetry, galvanostatic charging-discharging, and electrochemical impedance spectroscopy. The composites exhibited pseudo-capacitive behavior with reversible redox reactions during charge and discharge cycles. Specific capacitance of 191 F/g at scan rates of 2 mV/s was measured in 1 M KOH. Electrochemical impedance spectroscopy revealed an escalating impedance factor as NaF content increases within Ti 3 C 2 T x . This study underscores the versatile energy storage potential of Ti 3 C 2 T x /NaF composites, offering insights into their tailored properties and behavior.
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