https://scholars.lib.ntu.edu.tw/handle/123456789/64356
標題: | 鋰離子二次電池新型負極材料的製備與測試(Ⅱ) The test and preparation of new type negative electrode material of lithium-ion secondary battery |
作者: | 吳乃立 | 關鍵字: | 鋰離子二次電池;負極材料;一氧化錫;lithium-ion secondary battery;negative electrode material | 公開日期: | 2001 | 出版社: | 臺北市:國立臺灣大學化學工程學系暨研究所 | 摘要: | 作為鋰離子二次電池負極材料,一氧 化錫(SnO)之理論電容量密度超過石墨甚 多。但其實際電容量密度取決於粉體之 純度與微結構。傳統製備SnO 的方法均 以沉澱法為主,但易產生雜相(SnO2)。本 研究藉由水溶液回流的方式製備出具有 高結晶性、高純度的SnO 粉體。藉由循 環充放電的測試,本研究以微分比電容 對電位作圖的方式確定了以SnO/graphite 複合材料作為負極的鋰離子二次電池, 其在充放電過程中氧化還原的反應電 位。而SnO/graphite 複合材料放電電位 較純石墨為低,將有助於增加工作電壓範圍。 The theoretical capacity of SnO is much larger than graphite when used as the negative electrode of lithium-ion secondary battery. The practical and efficient capacity depends on the purity and microstructure of electrode material powders. Conventional preparation methods mostly employ precipitation approach, which produces amorphous SnO as well as impurity SnO2. We proposed in this study to produce SnO powders of high crystalline and high purity based on hydrothermal process. We also used SnO and SnO/graphite composite materials as negative electrode active materials. We ensure the redox potential by differential specific capacity management while taking SnO and SnO/graphite as the negative electrodes. The voltage of discharge of SnO/graphite composite materials is lower than that of graphite, it also means the working voltage is increased. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/9266 | 其他識別: | 892214E002063 | Rights: | 國立臺灣大學化學工程學系暨研究所 |
顯示於: | 化學工程學系 |
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892214E002063.pdf | 141.72 kB | Adobe PDF | 檢視/開啟 |
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