Chen Liang, Zhang Yu, Zhu Pengli, Zhou Fengrui, Zeng Wenjin, Lu Daoqiang Daniel, Sun Rong, Wong Chingping
Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications.
Sci Rep. 2015 Apr 10;5:9672. doi: 10.1038/srep09672.
Monodisperse Cu2O of different microstructures, such as cubes, flower-like, and microspheres, have been extensively synthesized by a simple polyol reduction method using different copper salts, i.e. (Cu(acac)2, Cu(OH)2, and Cu(Ac)2·H2O). The effects of copper salts on the morphology of Cu2O were investigated in details through various characterization methods, including X-ray diffraction, transmission electron microscopy, scanning electron microscopy and UV-Vis absorption spectra. The effects of morphology on the electrochemical properties were further studied. Among the different structures, Cu2O with the microspheric morphology shows the highest specific capacitance and the best cycling stability compared with those of the other two structures, thus bear larger volume charge during the electrochemical reaction due to the microspheres of small nanoparticles.
通过使用不同的铜盐（即Cu(acac)₂、Cu(OH)₂和Cu(Ac)₂·H₂O）的简单多元醇还原法，已经广泛合成了具有不同微观结构（如立方体、花状和微球）的单分散Cu₂O。通过各种表征方法，包括X射线衍射、透射电子显微镜、扫描电子显微镜和紫外可见吸收光谱，详细研究了铜盐对Cu₂O形态的影响。进一步研究了形态对电化学性能的影响。在不同结构中，与其他两种结构相比，具有微球形态的Cu₂O表现出最高的比电容和最佳的循环稳定性，因此由于小纳米颗粒的微球，在电化学反应过程中承受更大的体积电荷。
