Journal
MATERIALS LETTERS
Volume 111, Issue -, Pages 35-38Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.08.055
Keywords
CoFe2O4; Nanoparticles; Pseudocapacitance; Mesoporous; Metallic composites
Funding
- National Basic Research Program of China [2012CB932800]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars and State Education Ministry (SRF for ROCS, SEM)
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A promising mesoporous cobalt iron oxide (CoFe2O4) electrode material for supercapacitors has been synthesized via a chemical co-precipitation method using aluminum nitrate (Al(NO3)(3)) as a precursor of aluminum oxide (Al2O3) hard template. The as-prepared CoFe2O4 materials were spherical-like nanoparticles with diameter of around 25 nm. Moreover, the as-prepared CoFe2O4 materials exhibited a high specific surface area (140.6 m(2) g(-1)) and high porosity (0.23 cm(3) g(-1)). The fabricated CoFe2O4 electrode showed typical pseudocapacitive behavior with a broad potential window (1.5 V), a high specific capacitance (142 F g(-1), 2 mV s(-1)) and a long cycling life (71.8% retention after 1000 cycles). (C) 2013 Elsevier B.V. All rights reserved.
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