摘要
用阴极还原二价锰和二价钴的方法在碳纤维上共沉积了Mn(OH)2和Co(OH)2前驱物,通过干燥和热处理过程制备了钴掺杂的氧化锰(CMO)。用扫描电子显微镜(SEM)、X射线衍射(XRD)、X光电子能谱(XPS)对CMO电极的形貌、结构和元素状态进行表征,用电化学工作站研究了电极材料的电化学性能。结果显示,由于钴原子进入氧化锰晶胞中,增加氧化锰的面间距,改善了氧化锰的电化学性能。
The Mn （OH）2 and Co （OH）2 precursors were co -deposited on the carbon fiber by cathodic reduction from bivalent manganese and cobalt, then Co doped manganese oxide （CMO） electrodes were prepared by dry and heat treatment. Scan electron microscopy （SEM）, X -ray diffraction （XRD） and X -ray photoelectron spectroscopy （XPS） were used to characterize the morphology, structure and elemental state of manganese oxide electrodes. And electrochemical properties were investigated utilizing electrochemical workstation. The results showed that doping cobalt atoms in the unit cell structure of manganese oxide resulted in the increase of interplanar spacing, which enhanced the electrochemical performance of manganese oxides.
出处
《广州化工》
CAS
2014年第11期3-5,11,共4页
GuangZhou Chemical Industry
基金
国家自然科学基金(NO:11075110)
关键词
钴掺杂氧化锰
阴极还原
超级电容器
电化学性能
Co doped manganese oxide
cathodic reduction
supercapacitors
electrochemical perporties
