現今在選用鋰離子二次電池之負極材料不再是單一碳系材料。漸漸被非碳系取代，如：金屬或合金等材料，具有高能量度及高電容量優勢，能應用在二次電池提升電池效應。目前在學術界已研發不少合金系統負極材料，如：Li-C、Li-Mg、Mg-Si等。本實驗選用Mg-Ni合金作為負極材料，鎂活性較高反應較快，添加惰性元素鎳在鎂基地中減緩反應且能抑制體積膨脹的效應，提升電池循環壽命及安全性。本研究以鎂-鎳合金為研究素材，針對三種不同製程下之各電極結構與組織分析及探討Mg-Ni負極材料在高溫環境下充放電機制。實驗除了探討傳統粉末電極法及熱蒸鍍電極基本物化性質之外，3D電極評估其在高溫下充放電機制與亦導入電化學效應。實驗結果顯示， 3D 雷射積層技術製作具有微奈米級結構電極片。顯微結構具有3D堆疊其形貌凹凸亦有助於體表面積增加，而各界面層接合效應較好可提升電池循環壽命。在充放電室溫高溫測試下，3D電極之循環性與粉末電極相較穩定。光譜FTIR分結果確認3D雷射電極高溫測試後吸收峰值越弱且反應後之產物官能團其他電極少代表3D電極與電解液反應機制相較優異，可證實3D電極適具有高溫環境良好的充放電性能。

Safety and high capacity properties of Mg based electrodes have been achieved in the past and are widely applied in secondary batteries. In this study, we are able to suppress the volume expansion and improve battery cycle life of magnesium-based electrode by adding nickel to magnesium matrix. The Mg-Ni alloy anode material for electrode was prepared by different process methods: the microstructures and electrochemical characteristics behavior at high temperature of the slurry cast method, thermal evaporation method and 3D femtosecond laser additive manufacturing were studied.3D femtosecond laser additive manufacturing is the most popular in 3D printer techniques. Nano-structure of 3D laser electrode possesses stable metal interface and high energy density used for electrode fabrication. As the results of research show that 3D femtosecond laser electrodes have excellent cycle characteristics. The high temperature charge-discharge of Mg-Ni thin film electrodes provides a large capacity than slurry method due to their low concentration of oxygen and large surface area. Moreover, 3D laser electrode has better electrochemical performance compared to slurry and thin film anode electrode system. FTIR results show the 3D electrode is less functional after high temperature test, representative of the reaction mechanism with the electrolyte is better than another electrode. The results suggested that 3D laser electrode may be useful in high energy storage systems.

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