화학공학소재연구정보센터
Electrochimica Acta, Vol.116, 467-474, 2014
One-dimension MnCo2O4 nanowire arrays for electrochemical energy storage
One-dimension MnCo2O4 nanowire arrays are synthesized on nickel foam by a facile hydrothermal method. The MnCo2O4 nanowires are highly crystalline with an average diameter of 70 nm and exhibit excellent properties for electrochemical energy storage. Impressively, the MnCo2O4 nanowire array exhibits noticeable pseudocapacitive performance with a high capacitance of 349.8 F g(-1) at 1 A g(-1) and 328.9 F g(-1) at 20 A g(-1) as well as excellent cycling stability. As an anode material for Li-ion batteries, the MnCo2O4 nanowire array delivers an initial specific discharge capacity of 1288.6 mAh g(-1) at 100 mA g(-1), with reversible capacity retention of 92.7% after 50 cycles. The outstanding electrochemical performances are mainly attributed to its nanowire array architecture which provides large reaction surface area, fast ion and electron transfer and good structure stability. (C) 2013 Elsevier Ltd. All rights reserved.