NiCo2S4 nanotube arrays grown on flexible carbon fibers as battery-type electrodes for asymmetric supercapacitors
2018; Elsevier BV; Volume: 103; Linguagem: Inglês
10.1016/j.materresbull.2018.03.014
ISSN1873-4227
Autores Tópico(s)Advancements in Battery Materials
ResumoNiCo2S4 nanotube arrays grown on carbon cloth are prepared successfully by a facile two-step method. The as-prepared tubular nanoarchitecture deliver a high specific capacity of 578 C/g at a galvanostatic charge-discharge current density of 0.5 A/g with good cycling stability in 3 M KOH aqueous solution. Furthermore, the all-solid-state asymmetric supercapacitor based NiCo2S4 nanotube arrays as the positive electrode shows a superior energy density of 24.78 Wh/kg at a power density of 1770.13 W/kg. The results reveal that the as-synthesized NiCo2S4 nanotube arrays might be promising electrode materials for electrochemical energy storage.
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