期刊
ACS APPLIED MATERIALS & INTERFACES
卷 3, 期 9, 页码 3276-3279出版社
AMER CHEMICAL SOC
DOI: 10.1021/am201079z
关键词
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).
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