One-Pot Synthesis of Uniform Fe3O4 Nanospheres with Carbon Matrix Support for Improved Lithium Storage Capabilities

作者：Chen, Jun Song; Zhang, Yumiao; Lou, Xiong Wen^*

来源：ACS Applied Materials & Interfaces, 2011, 3(9): 3276-3279.

DOI：10.1021/am201079z

• Fe3O4
• carbon matrix
• lithium-ion batteries
• anode

Poly(acrylic acid) (PAA)-entangled Fe3O4 nanospheres are synthesized via a facile solvothermal method. In this system, ethylenediamine plays a very important role to control the uniformity of the nanospheres, and the PAA molecules serve as the carbon source that transforms into a carbon matrix after the heat treatment under an inert atmosphere. These uniform Fe3O4 nanospheres with carbon matrix support manifest greatly enhanced lithium storage properties over prolonged cycling, with a reversible capacity of 712 mA h g(-1) retained after 60 charge/discharge cycles. However, the carbon-free counterpart can only deliver a much lower capacity of 328 mA h g(-1).

• 出版日期2011-9