Lithium-oxygen(Li-O_(2)) batteries are considered as the next generation for energy storages systems due to the higher theoretical energy density than that of Li-ion batteries. However, the high charge overpotential c...Lithium-oxygen(Li-O_(2)) batteries are considered as the next generation for energy storages systems due to the higher theoretical energy density than that of Li-ion batteries. However, the high charge overpotential caused by the insulated Li_(2)O_(2)results in low energy efficiency, side reaction from electrolyte and cathode, and therefore poor battery performance. Designing noble metal-based catalysts can be an effective strategy to develop high-performance Li-O_(2)batteries with low charge overpotentials and outstanding cycle stability. However, the charge mechanism for noble metal-based catalysts is not clear and even contradictory. Herein, several charge mechanisms of Li_(2)O_(2)are first discussed. Subsequently, the possible charge processes of Li-O_(2)batteries with noble metal-based catalysts are illustrated. In addition, the future development for noble metal-based catalysts is outlined.展开更多
基金the financial support from the National Natural Science Foundation of China (No. 12175098)Hundred Talents Sailing Project of Jiangxi Province, China。
文摘Lithium-oxygen(Li-O_(2)) batteries are considered as the next generation for energy storages systems due to the higher theoretical energy density than that of Li-ion batteries. However, the high charge overpotential caused by the insulated Li_(2)O_(2)results in low energy efficiency, side reaction from electrolyte and cathode, and therefore poor battery performance. Designing noble metal-based catalysts can be an effective strategy to develop high-performance Li-O_(2)batteries with low charge overpotentials and outstanding cycle stability. However, the charge mechanism for noble metal-based catalysts is not clear and even contradictory. Herein, several charge mechanisms of Li_(2)O_(2)are first discussed. Subsequently, the possible charge processes of Li-O_(2)batteries with noble metal-based catalysts are illustrated. In addition, the future development for noble metal-based catalysts is outlined.
