alpha-Fe2O3: Hydrothermal Synthesis, Magnetic and Electrochemical Properties

作者：Ma, Jianmin; Lian, Jiabiao; Duan, Xiaochuan; Liu, Xiaodi; Zheng, Wenjun^*

来源：Journal of Physical Chemistry C, 2010, 114(24): 10671-10676.

DOI：10.1021/jp102243g

• LITHIUM-ION BATTERY
• TEMPLATE-FREE SYNTHESIS
• GROWTH-MECHANISM
• ORIENTED ATTACHMENT
• HOLLOW SPHERES
• CRYSTAL-GROWTH
• PARTICLE-SIZE
• SHAPE CONTROL
• FACILE ROUTE
• NANORODS

The size- and shape-controlled fabrication of alpha-Fe2O3 has been successfully realized via a faicle template-free hydrothermal route, only simply changing reaction time and solvent used. The formation mechanisms of various nanostructures are proposed and the controlling factors on the morphology of the final product are also discussed. Furthermore, magnetic hysteresis measurements demonstrate that the as-obtained alpha-Fe2O3 nanostructures show structure-dependent magnetic properties. And the as-obtained alpha-Fe2O3 nanopolyhedra exhibits ultrahigh reversible capacity, and excellent capacity retention over 20 cycles. It is expected that the adjustable magnetic properties and high discharge capacity of the as-prepared samples make them useful with potential applications in magnetic nanodevices and high-energy batteries.

• 出版日期2010-6-24
• 单位南开大学