| Summary: | 碩士 === 國立臺北科技大學 === 製造科技研究所 === 107 === Lithium carbon dioxide battery is a secondary energy storage device with benefit of environmental protection and high electric capacity. Because of its high specific energy density, the capacitance is 5-10 times more than traditional lithium ion batteries. The metal cathode of traditional lithium ion battery is replaced by carbon dioxide which brings the advantage of being lighter. In addition, carbon dioxide is a common greenhouse gas, and if it can be effectively converted, it can create an energy storage device that is eco-friendly and high energy power.
Lithium carbonate is the main product of carbon dioxide battery. Because of the wide energy gap, it is not easy to decompose. So more energy is needed to decompose during charging which causes the charging potential increased. And its decomposition is incomplete which will lead to passivation of the cathode surface and the circulation life will decrease. In order to improve this phenomenon, this study added a cathode catalyst to the lithium-carbon dioxide battery, and modified the carbon nanotubes with high-activity nanoparticles to improve the circulation life and decrease overpotential, it can converse carbon dioxide into oxygen and carbon, and achieve high-efficiency energy storage. With the characteristics above, the battery can effectively apply into the current global energy crisis and the greenhouse effect.
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