Using KMnO4 and MnCl2·4H2O as raw materials,nanometersized KMn8O16 was prepared by solid state reaction at room temperature.XRD,SEM,FT-IR and surface area measurement techniques were used to investigate the compo...Using KMnO4 and MnCl2·4H2O as raw materials,nanometersized KMn8O16 was prepared by solid state reaction at room temperature.XRD,SEM,FT-IR and surface area measurement techniques were used to investigate the composition,size,morphology and properties of KMn8O16 powder.The results show that the powder has an average diameter of 20 nm with sphere-like and good dispersity and higher for H2O2 decomposition.展开更多
文摘Using KMnO4 and MnCl2·4H2O as raw materials,nanometersized KMn8O16 was prepared by solid state reaction at room temperature.XRD,SEM,FT-IR and surface area measurement techniques were used to investigate the composition,size,morphology and properties of KMn8O16 powder.The results show that the powder has an average diameter of 20 nm with sphere-like and good dispersity and higher for H2O2 decomposition.
文摘以KMn O4、Mn SO4和HNO3为原料,采用化学沉淀法合成KMn8O16纳米棒,用Cu2+和聚苯胺(PANI)对KMn8O16进行了掺杂、包覆改性的研究.通过XRD、TEM等技术对合成材料的结构和微观形貌进行了表征;采用恒流充、放电系统及交流阻抗测试法对合成材料的电化学性能进行测试.结果表明:Cu2+掺杂和PANI包覆得到的样品作为锂离子电池正极材料时,经过50次循环后容量仍有178 m Ah/g,具有较高的可逆比容量和优良的循环性能,为研究高比容量和循环性能稳定的新型锂离子电池正极材料提供方向.