Fabrication of nanosized metallic copper by electrochemical milling process

Fabrication of nanosized metallic copper by electrochemical milling process
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电化学铣削法制备纳米金属铜

DOI:
10.1007/s10853-007-2274-6
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发表时间:
2008-02
影响因子:
4.5
通讯作者:
zhang dw
zhang dw
中科院分区:
材料科学3区
文献类型:
--
作者:
zhang dw

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使用微米尺寸的氧化铜粉末作为CuO/Li电池中的起始电极材料,氧化铜(CuO)可以以可控的方式电化学还原成更小尺寸的金属颗粒。提出了一种新的电化学铣削(ECM)方法,用于“自上而下”合成纳米级金属颗粒。采用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)和透射电子显微镜(TEM)对电化学还原得到的铜颗粒进行了结构表征。研究了CuO前驱体、电流密度和操作温度对最终产物的影响。发现后两个因素对所得铜产品有显著影响。
Using a copper oxide powder of micrometer size as the starting electrode material in CuO/Li cells, copper oxide (CuO) can be electrochemically reduced into metal particles of smaller sizes in a controllable way. A novel electrochemical milling (ECM) method is developed for a “top–down” synthesis of nanometer-scaled metal particles. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) were employed to characterize the structure of copper particles obtained by the electrochemical reduction. The influences of CuO precursors, current density, and operating temperature on the final products were also studied. It is found that the latter two factors had pronounced effects on the obtained copper products.
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