TiC Decorated Current Collector for Seawater Batteries
발표자
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초록
내용
As a type of Na-air batteries, seawater batteries (SWBs) utilize natural-abundant seawater as the catholyte. Conventionally, the cathode current collector(CC) of SWBs are consisting of titanium (Ti) and carbon materials. The overpotential is increased by the high contact resistance between titanium and carbon CCs, and sluggish kinetics of oxygen evolution and reduction reactions, leads to side reactions such as carbon corrosion. Previous studies had neglected the importance of Ti, rather focusing on carbon CCs, catalysts, and so on. In this study, titanium carbide (TiC) is formed on the surface of Ti with a simple carbon diffusion process. In comparison to pristine Ti, tailored Ti exhibit improved performance. As a result of the reduction in contact resistance and the electrocatalytic effect of TiC, carbon corrosion is prevented, and electrochemical performance is improved. Performance of tailored Ti and its potential for use in energy storage systems are verified.