Nanocomposite films of copper metal and cuprous oxide were electrodeposited at room temperature from an alkaline copper (II) lactate solution. The electrode potential oscillated spontaneously during constant-current deposition of the composites. The oscillations were periodic in a stirred solution, but became chaotic in unstirred solution. For a given current density the phase composition was a strong function of solution pH. As the pH was increased, the cuprous oxide content increased. At pH 12, no oscillations were observed, and pure cuprous oxide was deposited. At pH 9, the phase composition varied from pure cuprous oxide at current densities below 0.1 mA/cm~2 to 96 mole percent copper at 2.5 mA/cm~2.
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机译：在室温下从碱性乳酸铜（II）溶液中电沉积铜金属和氧化亚铜的纳米复合膜。在恒流沉积复合材料过程中，电极电势自发振荡。在搅拌的溶液中振荡是周期性的，但是在未搅拌的溶液中变得混乱。对于给定的电流密度，相组成是溶液pH的强函数。随着pH的增加，氧化亚铜含量增加。在pH值为12时，未观察到振荡，并且沉积了纯的氧化亚铜。在pH 9时，相组成从电流密度低于0.1 mA / cm〜2的纯氧化亚铜变为2.5 mA / cm〜2的96摩尔％的铜。
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