| 초록 |
The shape or surface structure of catalysts in lithium-air batteries has been regarded as the crucial physical factors to determine its catalytic activity in various applications. However, very little is known about the catalyst shape-dependent activities or the structure sensitive catalytic activities for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the cathode of lithium-O2 battery. Hence, we here try to change the crystal structure, surface structure and shape of noble metal catalysts to elucidate their effects on the catalytic activities. Various catalysts such as PdCu, Pt3Co, Pt, etc. have been used to figure out the fundamental design principles of noble metal catalysts for Li-O2 batteries. As a result, we knew that surface energy, crystal structure and elemental composition are all important to develop the most optimum metal catalysts to attain high reversibility of Li-O2 batteries. |
