Capacitance improvement of supercapacitor active material based on activated carbon fiber working with a Li-ion containing electrolyte

“…Takamura et al modified the surface of activated CNFs by coating the thin film of the oxides of Ag, Cu, Pd, and Sn. The transition metal oxides effectively enhance the capacitance and high rate charge/discharge performance of the composites which might be used as negative electrode materials for Li-ion hybrid supercapacitor [37]. Ye [42].…”

Section: -D Carbon Materials Compositesmentioning

confidence: 99%

High-Performance Li-ion Batteries and Supercapacitors Base on 1-D Nanomaterials in Prospect

2011

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One-dimensional (1-D) nanomaterials with superior specific capacity, higher rate capability, better cycling peroperties have demonstrated significant advantages for high-performance Li-ion batteries and supercapacitors. This review describes some recent developments on the rechargeable electrodes by using 1-D nanomaterials (such as LiMn2O4 nanowires, carbon nanofibers, NiMoO4 · nH2O nanorods, V2O5 nanoribbons, carbon nanotubes, etc.). New preparation methods and superior electrochemical properties of the 1-D nanomaterials including carbon nanotube (CNT), some oxides, transition metal compounds and polymers, and their composites are emphatically introduced. The VGCF/LiFePO4/C triaxial nanowire cathodes for Li-ion battery present a positive cycling performance without any degradation in almost theoretical capacity (160 mAh/g). The Si nanowire anodes for Li-ion battery show the highest known theoretical charge capacity (4277 mAh/g), that is about 11 times lager than that of the commercial graphite (∼372 mAh/g). The SWCNT/Ni foam electrodes for supercapacitor display small equivalent series resistance (ESR, 52 mΩ) and impressive high power density (20 kW/kg). The advantages and challenges associated with the application of these materials for energy conversion and storage devices are highlighted.

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“…Activated carbon‐based super‐capacitors have been most developed because of their low fabrication cost, large capacitance, and long cycle time . Further, electrolytes have been exploited to improve electrochemical properties . For the current collector, thin metal foils of nickel, copper, and titanium have been commonly used.…”

Section: Introductionmentioning

confidence: 99%

Thin Film Energy Storage Device with Spray-Coated Sliver Paste Current Collector

Yoon¹,

Jang²,

Jo³

et al. 2017

ETRI Journal

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This paper challenges the fabrication of a thin film energy storage device on a flexible polymer substrate specifically by replacing most commonly used metal foil current collectors with coated current collectors. Mass-manufacturable spray-coating technology enables the fabrication of two different half-cell electric double layer capacitors (EDLC) with a spray-coated silver paste current collector and a Ni foil current collector. The larger specific capacitances of the halfcell EDLC with the spray-coated silver current collector are obtained as 103.86 F/g and 76.8 F/g for scan rates of 10 mV/s and 500 mV/s, respectively. Further, even though the half-cell EDLC with the spray-coated current collector is heavier than that with the Ni foil current collector, smaller Warburg impedance and contact resistance are characterized from Nyquist plots. For the applied voltages ranging from À0.5 V to 0.5 V, the spray-coated thin film energy storage device exhibits a better performance.

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Capacitance improvement of supercapacitor active material based on activated carbon fiber working with a Li-ion containing electrolyte

Cited by 10 publications

References 21 publications

Preparation and Capacitance of Copper-Doped Activated Carbon From Polyacrylonitrile (PAN) Precursor

Preparation and Capacitance of Copper-Doped Activated Carbon From Polyacrylonitrile (PAN) Precursor

High-Performance Li-ion Batteries and Supercapacitors Base on 1-D Nanomaterials in Prospect

Thin Film Energy Storage Device with Spray-Coated Sliver Paste Current Collector

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