Yan Yizhi, Tang Haolin, Li Junsheng, Wu Fan, Wu Tianbao, Wang Rui, Liu Dan, Pan Mu, Xie Zhizhong, Qu Deyu
State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, PR China.
State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, PR China.
J Colloid Interface Sci. 2017 Jun 1;495:157-167. doi: 10.1016/j.jcis.2016.12.067. Epub 2016 Dec 30.
A novel cocoon-like FeO@C nanoparticle was fabricated via a facile hydrothermally molecular self-assembly procedure. Compared to bare FeO nanoparticles, the carbon coated FeO nanoparticles exhibit higher specific capacity, excellent rate capacity and cyclic stability as the anode in lithium ion batteries. These cocoon-like FeO@C nanoparticles carry enhanced lithium storage properties with a reversible capacity of 358mAhg after 150 cycles under the current density of 1000mAg, while the carbon-free bare FeO can only deliver a much lower capacity of 127.6mAhg with a continuously decreasing trend. The excellent performance of FeO@C is attributed to the coated carbon layers, which not only enhance the electronic conductivity but also reduce the stress upon the FeO nanoparticles caused by the volume change during the charge/discharge process.
