Low temperature synthesis of MnO - ScienceDirect
2020年1月1日 · Herein, we are reporting a facile and novel TEA-ethoxylate assisted low temperature hydrothermal route for synthesis of stable nanostructured MnO 2 and their application as an electrode material in supercapacitor. The synthesis was accomplished at two different reaction temperatures viz. 60 °C and 80 °C.
Comparative study of α-, β-, γ- and δ-MnO - ScienceDirect
2020年1月1日 · Rapid methyl dehydrogenation to form benzoate and aromatic ring breakage are vital steps for toluene oxidation. The structure-performance relationship of α-, β-, γ- and δ-MnO 2 catalysts were studied.
Structural, optical and magnetic properties of α- and β-MnO 2 …
2021年8月15日 · α-, β- and αβ-MnO 2 nanorods are synthesised through hydrothermal technique. Rietveld refinement and SEM confirms the presence of α- and β-phase in αβ-MnO2. Among α-, β- and αβ-MnO 2, β-MnO 2 possess high capacitance. High concentration of Mn 3+ contributes high bandgap in α-MnO 2 nanorods.
朱永法Nature子刊：石墨烯封装α-MnO2表面电子结构调控分解臭 …
开发用于 臭氧分解 的锰基材料时，遇到的挑战主要与稳定性差和 水失活效应 有关。 为了解决这些问题，作者开发了一种由 石墨烯 包裹的 α-MnO2 纳米纤维组成的分层结构。 优化后的催化剂在20%的相对湿度（RH）下表现出80%的稳定臭氧转化效率和超过100 h的优异稳定性。 即使相对湿度提高到 50%，臭氧转化率也达到了 70%，远远超过了 α-MnO2 纳米纤维的性能。 在这里，表面石墨碳通过从内部不饱和锰原子中捕获电子而被活化。 优异的稳定性源于适当的局部 功函 …
α-MnO2纳米管自组装微球的可控制备及电化学性能
通过JEOL JSM7500F场发射扫描电子显微镜 (SEM)以及美国Philips Tecnai FEI透射电子显微镜 (TEM)对MnO 2 进行形貌表征。 通过日本岛津公司的Kratos Axis Ultra DLD型多功能电子能谱仪对样品进行X射线光电子能谱 (XPS)表征测定样品键合态，X射线源是Al Kα，荷电效应校正用C 1 s 标 …
SEM images of MnO nanoparticles | Download Scientific Diagram
SEM (Scanning Electron Microscope) indicates a discrepancy in the size and the form of the particles due to the effect of starch weights. The sizes of...
Magnetic properties in α-MnO 2 doped with alkaline elements
2015年3月13日 · In this work, we studied the ferromagnetic behaviour in K-doped MnO 2 nanotubes. X-ray absorption near edge spectroscopy (XANES) indicates that Mn is very close to 4+ valency rather than 3+,...
SEM and EDAX pattern of α-MnO 2 nanoparticles. i SEM image of …
Crystal structure, surface properties, morphology, and electrochemical properties of MCo2O4 are characterized using X-ray diffraction (XRD), gas adsorption, scanning electron microscopy (SEM ...
SEM images of MnO2 prepared by different methods: (a
SEM images of MnO2 prepared by different methods: (a) natural process; (b) hydrothermal process. The inset images are the higher magnifications. Much effort has been devoted to the synthesis of...
北大潘锋AM：预嵌入策略助力锰氧化物正极材料电化学储能- X …
2020年11月21日 · MnO2由于成本低廉、高理论容量等优点被作为多种离子电池正极宿主材料而广泛研究，但MnO2材料低电导率、低可逆放电容量、缓慢的扩散动力学和较差的循环稳定性，限制了产业化应用潜力。 为了解决这些问题，研究者提出多种性能优化策略，包括金属掺杂、包覆、预嵌入、超浓电解液等。 其中，“预嵌入策略”是一种通过晶体结构调控正极材料本征电化学性能的有效策略，被广泛应用于钒酸盐、二维过渡族金属硫化物、硒化物等电极材料之中。 然而，关 …