Effect of calcination temperature on morphology, crystallinity and electrochemical properties of nano-crystalline metal oxides (Co3O4, CuO, and NiO) prepared via ultrasonic spray pyrolysis
Effect of calcination temperature on morphology, crystallinity and electrochemical properties of nano-crystalline metal oxides (Co3O4, CuO, and NiO) prepared via ultrasonic spray pyrolysis
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DOI：
10.1016/j.jpowsour.2007.04.087
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发表时间：
2007-11
影响因子：
9.2
通讯作者：
S. Oh;H. Bang;Y. Bae;Yangfang Sun
中科院分区：
文献类型：
--
作者：
S. Oh;H. Bang;Y. Bae;Yangfang Sun
采用超声波喷雾热解法合成纳米晶金属氧化物（Co3O4、CuO 和 NiO）作为锂离子电池负极材料。研究了煅烧温度对金属氧化物的形貌、晶粒尺寸和电化学性能的影响。 X 射线衍射 (XRD) 研究表明，微晶尺寸随最终煅烧温度而变化。扫描电子显微镜（SEM）和透射电子显微镜（TEM）观察表明，煅烧温度强烈影响所制备的金属氧化物的形貌，从而导致不同的电化学性能。所制备的金属氧化物纳米级微观结构的存在与不可逆容量和容量保持率密切相关。
Nano-crystalline metal oxides (Co3O4, CuO, and NiO) are synthesized as anode materials for lithium-ion batteries by an ultrasonic spray pyrolysis method. The effects of calcination temperature on the morphology, crystallite size and electrochemical properties of the metal oxides are investigated. X-ray diffraction (XRD) studies show that the crystallite size varies with the final calcination temperature. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations reveal that the calcination temperature strongly influences the morphology of the prepared metal oxides and this results in different electrochemical performance. The existence of a nano-scale microstructure for the prepared metal oxides has a strong relationship with irreversible capacity and capacity retention.