2020年7月12日 · Herein, a new in situ EC-TEM technique is developed to investigate multi-step phase transitions of Mn 3 O 4 electrodes under the galvanostatic charge/discharge mode and constant-voltage discharge mode.

2010年11月15日 · In this paper, we report the synthesis of Mn 3 O 4 nanoparticles with novel morphology (lozange) under hydrothermal treatment, using surfactant cetyltetramethylammonium bromide (CTAB) as a template agent. The obtained material is characterized by X-ray diffraction, transmission electron microscopy (MET), and impedance spectroscopy.

2015年7月5日 · In this work, we performed a simple chemical precipitation method to synthesize Mn3 O 4 nanoparticles at room temperature, characterized well using various analytical techniques, and successfully demonstrated it as an energy storage material.

2013年2月1日 · The Mn 3 O 4 products were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and electrochemical tests. A specific capacitance of 205 F g −1 was obtained for Mn 3 O 4 nanoparticles at a current density of 0.5 A g −1 in 1 M Na 2 SO 4 electrolyte solution.

The HR-TEM image of the CuMn2O4/MWCNTs material, displayed in Figure 3 e, shows the rhombic CuMn2O4 nanoparticles anchored to the MWCNTs surface. Image processing analysis revealed the CuMn2O4 ...

该团队应用新的原位电化学TEM芯片对Mn 3 O 4 嵌锂过程进行了研究，发现微电池的充放电模式会影响电化学反应路径。 在恒电流放电模式下，Mn 3 O 4 的锂化遵循三步反应：Mn 3 O 4 + Li + → LiMn 3 O 4 + Li + → MnO + Li 2 O → Mn + Li 2 O；研究者还发现，在恒电流嵌锂反应初期，Li倾向于沿 {101}晶面进入Mn 3 O...

2015年6月1日 · Selected area electron diffraction analysis from transmission electron microscope (TEM) was carried out to determine the in-plane edge directionalities of (101) and (112) Mn3O4. We found the (101) Mn3O4 orientation to exhibit a complex in-plane epitaxial relation of [231̄]Mn3O4//[100]STO and an out-of-plane relation of [1̄01]Mn3O4//[1̄11]STO.

Mn3O4是一种廉价、无毒、具有低锂化电位和较高的理论比容量(936mAh g-1)的负极材料，然而业界对Mn3O4的锂化机理仍存在争议。 我们用原位TEM研究了Mn3O4在恒电流模式和恒电压模式下的锂化机理。

在这里，我们报告了通过简单且经济高效的湿化学途径，在不使用封端剂的情况下，低温生长二维独立式氧化锰（MnO）纳米片。 FESEM、TEM 和 AFM 分析证实，原始 2D MnO 纳米片的尺寸和厚度分别在 100 至 200 nm 和 3.5-5.1 nm 之间。

2020年7月12日 · To observe the real-time electrochemical behaviors of Mn3O4 during lithiation-delithiation cycles, a nano-sized LIB was constructed inside transmission electron microscope (TEM) using an ...