Ferrocene as precursor for carbon-coated α-Fe2O3 nano-particles for rechargeable lithium batteries

被引:65
作者
Brandt, A. [1 ]
Balducci, A. [1 ]
机构
[1] Univ Munster, Inst Phys Chem MEET, Corrensstr 28-30, D-48149 Munster, Germany
关键词
Ferrocene; Metallocene; Iron oxide; Carbon coating; Lithium-ion battery; ION BATTERIES; ELECTRODE MATERIALS; OXIDE ELECTRODES; ANODE MATERIALS; INTERCALATION; STORAGE;
D O I
10.1016/j.jpowsour.2012.11.125
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Ferrocene can be used as a precursor for the synthesis of carbon-coated alpha-Fe2O3 nano-particles. The pyrolysis of ferrocene leads to the formation of a compound that can be fully converted into carbon-coated alpha-Fe2O3 cc nano-particles via a simple oxidation in air. This simple, fast and cheap synthetic route enables the realization of carbon-coated nano-particles with particle size in the range of 50-150 nm. Moreover, varying the oxidation temperature, it is possible to control precisely the carbon coating present on the nano-particles. The so obtained carbon-coated alpha-Fe2O3 nano-particles can be easily processed in water to realize composite electrodes with a composition suitable for practical application. When used in combination with conventional electrolytes such electrodes display high specific capacity (over 800 mAh g(-1) at 0.13 A g(-1)), excellent cycling retention (higher than 99% after 50 cycles), and remarkable rate performance (over 400 mAh g(-1) at 5 A g(-1)). (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:44 / 49
页数:6
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