摘要
We have demonstrated a one-step and effective electrochemical method to synthesize graphene/MnO2 nanowall hybrids （GMHs）. Graphene oxide （GO） was electrochemically reduced to graphene （GN）, accompanied by the simultaneous formation of MnO2 with a nanowall morphology via cathodic electrochemical deposition. The morphology and structure of the GMHs were systematically characterized by scanning electron microscope （SEM）, X-ray photoelectron spectroscopy （XPS）, X-ray diffraction （XRD）, and Raman spectroscopy. The resulting GMHs combine the advantages of GN and the nanowall array morphology of MnO2 in providing a conductive network of amorphous nanocomposite, which shows good electrochemical capacitive behavior. This simple approach should find practical applications in the large-scale production of GMHs.
我们表明了一出一步舞和有效电气化学的方法综合 graphene/MnO2 nanowall 混血儿(GMH ) 。Graphene 氧化物(去) 电气化学地被归结为 graphene (GN ) ，经由 cathodic 与 nanowall 形态学由 MnO2 的同时的形成伴随了电气化学的免职。GMH 的形态学和结构被扫描电子系统地描绘显微镜(SEM ) ， X 光检查光电子光谱学(XPS ) ， X 光检查衍射(XRD ) ，和拉曼光谱学。产生 GMH 在提供非结晶的 nanocomposite 的一个传导性的网络联合 GN 的优点和 MnO2 的 nanowall 数组形态学，它显示出好电气化学的电容的行为。这条简单途径应该在 GMH 的大规模生产发现实际应用。
基金
Acknowledgements This work was supported by the National Natural Science Foundation of China （Nos. 20935003 and 20820102037） and the 973 Project （No. 2010CB933603）.
