Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 30, Pages 19524-19532Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b06096
Keywords
alpha-Fe2O3; cyclized-polyacrylonitrile; mesoporous; lithium-ion batteries; anode materials
Funding
- Shanghai Leading Academic Discipline Project [B502]
- Shanghai Nanotechnology Special Foundation [11 nm0500900]
- Shanghai Key Laboratory Project [08DZ2230500]
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The mesoporous alpha-Fe2O3/cyclized-polyacrylonitrile (C-PAN) composite was synthesized by a rapid and facile two-step method. The electrode was fabricated without conductive carbon addictive and employed as anode for lithium-ion batteries. Results demonstrate that building a conformal coating of a C-PAN network can provide a strong adhesion with active materials and contribute excellent electronic conductivity to the electrode, which can relieve the huge volume changes during a lithiation/delithiation process and accelerate the charge transfer rate. The material exhibited high reversible capacity of ca. 996 mAh g(-1) after 100 cycles at 0.2C, 773 mAh g(-1) at 1C and 655 mAh g(-1) at 2C, respectively, showing well enhanced cycling performance and superior rate capacity, and also exhibiting significantly improved power density and energy density compared to the traditional graphite materials. Our results provide a facile and efficient way to enhance the performance of alpha-Fe2O3 anode material, which also can be applied for other oxide anode materials.
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