An Overview of the Transition from Amorphous Carbon to an Ordered Graphitic Crystalline Plane for Applications

This review provides a comprehensive overview of the structural transformation from amorphous carbon—particularly in graphitizable soft carbons—to ordered graphitic crystalline planes, emphasizing the underlying mechanisms, advanced characterization techniques, and diverse applications. Carbon materials exhibit a broad spectrum of structures, from disordered amorphous forms to highly crystalline allotropes like graphite and graphene, with controlled transitions enabling tailored properties for energy storage, electronics, sensors, and composites. Key graphitization methods, including thermal annealing, catalytic processes, pressure-assisted techniques, and irradiation, are discussed in relation to processing conditions and resulting nanostructures. Thermodynamic and kinetic considerations, structural reorganization pathways, and the influence of heteroatoms and impurities are explored in depth. State-of-the-art characterization tools such as XRD, Raman spectroscopy, and TEM offer insights into atomic-scale studies. The review also addresses current challenges, emerging trends like sustainable and energy-efficient approaches, and future prospects for innovative carbon-based technologies.