S044022 コールドスプレーにおけるスズ粒子の挙動と皮膜特性に及ぼす作動ガスの圧力と温度の影響

抄録

Currently, graphite is used for anodes of the lithium ion battery. The higher capacity of a battery with the lithium alloy anode requires the development of a larger theoretical electrochemical capacity than graphite. Tin is a promising anode material, having a theoretical capacity more than 10 times that of the graphite used in these lithium alloy batteries. In this study, numerical simulation and experiments investigated influence of nitrogen gas stagnation pressure and temperature on behavior of particle and coating properties of tin in cold spraying. The deposition efficiency of tin coating reached a peak of 90% with gas stagnation pressure of 0.8MPa and gas temperature of 350 ℃. But the deposition efficiency fell from 90% to 20% rapidly and many fine particle with 1 μm were observed at coating surface when the gas pressure exceeded 0.8MPa.