This technology relates to an energy conversion device including a carbon composite thin film in which the salt particle concentration gradient is formed and a method of manufacturing the same, and to various energy storage devices such as batteries and supercapacitors. In particular, it is a technology designed to increase performance, durability, stability, and applicability based on core materials, structures, processes, or device configurations related to carbon composite thin films with salt particle concentration gradients, energy conversion devices containing them, and their manufacturing methods.
By introducing salt particles to increase the absolute amount of ions in carbon composite thin films, we seek to address the limitations of prior art methods for increasing ion concentration gradients, such as surface confinement and limited ion amount. Accordingly, the present technology applies a carbon composite thin film with a salt particle concentration gradient, a method for manufacturing said thin film using laser irradiation, and an energy conversion element using the thin film as key means, and proposes a concept whereby the formation of a salt particle concentration gradient within the carbon composite thin film enables an increased ion concentration gradient and enables improved energy conversion efficiency.
Accordingly, by forming a salt particle concentration gradient within the carbon composite thin film, the energy conversion efficiency and power density of the water-driven generator can be expected to be improved, and reproducibility, scalability, and process suitability in a practical environment can also be improved. In addition, it can be used as a high-performance material, device, battery, sensor, device, or manufacturing process in related industries, making it advantageous in terms of subsequent commercialization and demonstration.
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