Silicon carbide nanowires as highly robust electrodes for micro-supercapacitors
2012; Elsevier BV; Volume: 230; Linguagem: Inglês
10.1016/j.jpowsour.2012.12.085
ISSN1873-2755
AutoresJohn P. Alper, Mun Sek Kim, Maxime Vincent, Ben Hsia, Velimir Radmilović, Carlo Carraro, Roya Maboudian,
Tópico(s)Advanced battery technologies research
ResumoThe effectiveness of silicon carbide (SiC) nanowires (NW) as electrode material for micro-supercapacitors has been investigated. SiC NWs are grown on a SiC thin film coated with a thin Ni catalyst layer via a chemical vapor deposition route at 950 °C. A specific capacitance in the range of ∼240 μF cm−2 is demonstrated, which is comparable to the values recently reported for planar micro-supercapacitor electrodes. Charge–discharge studies demonstrate the SiC nanowires exhibit exceptional stability, with 95% capacitance retention after 2 × 105 charge/discharge cycles in an environmentally benign, aqueous electrolyte.
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