A novel nickel-based mixed rare-earth oxide/activated carbon supercapacitor using room temperature ionic liquid electrolyte

Liu, Hongtao; He, Ping; Li, Zhiying; Liu, Yang; Li, Jinghong

doi:10.1016/j.electacta.2005.06.034

Cited by 97 publications

(41 citation statements)

References 27 publications

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“…23,24 The class of ILs based on imidazolium cations exhibits a wider liquid range and an electrochemical window (up 7.0 V) and these have therefore become ideal electrolytes in electrochemical devices like batteries, capacitors and electrochemical sensors and biosensors. [24][25][26][27][28][29] Nujol and paraffin are the most commonly used binder components of carbon electrode pastes. Recently, these traditionally used binders have been totally or partially replaced with ILs, indicating that they offer an attractive and efficient alternative, due to the high ionic conductivity and sensitivity of the resulting electrodes.…”

Section: Introductionmentioning

confidence: 99%

Biosensors of laccase based on hydrophobic ionic liquids derived from imidazolium cation

Franzoi¹,

Vieira²,

Dupont³

2010

J. Braz. Chem. Soc.

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Biossensores contendo lacase (Aspergillus oryzae) e líquidos iônicos derivados do cátion 1-butil-3-metilimidazol (BMI) associados com os ânions hexafluorfosfato (BMI•PF 6 ) ou bis(trifluormetilsulfonil)imida (BMI•Tf 2 N) foram construídos para determinação de adrenalina. O biossensor baseado no BMI•Tf 2 N foi selecionado por apresentar maior resposta quando comparado ao BMI•PF 6 . As melhores condições para otimização foram estabelecidas por voltametria de onda quadrada (amplitude 100 mV, frequência 10 Hz e incremento 4,0 mV). . The recovery of adrenaline in injectable samples ranged from 96.3 to 101.6%. The results obtained for the adrenaline using the proposed biosensor and the United States Pharmacopeia procedure were in agreement at the 95% confidence level.

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Section: Introductionmentioning

confidence: 99%

Biosensors of laccase based on hydrophobic ionic liquids derived from imidazolium cation

Franzoi¹,

Vieira²,

Dupont³

2010

J. Braz. Chem. Soc.

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“…* corresponding author; e-mail: zydrunas@mail.lei.lt Meanwhile, nickel oxide is inexpensive, exhibits pseudocapacitance behaviour similar to that of ruthenium oxide, and has a large surface area. These properties make NiO suitable and promising material for improvement of carbon based supercapacitors [7][8][9][10][11]. Li et al [9] demonstrated that the specific capacitance of the NiO/carbon composite is higher than that of carbon electrode, despite the decrease of the surface area.…”

Section: Introductionmentioning

confidence: 99%

“…Ito et al [10] found that the addition of NiO increases the capacitance of cypress charcoal by about 13% in the gravimetric value. The authors point to the fact that the structural properties of carbon material and NiO content amount have the main influence on the capacitance values [7][8][9][10][11][12]. So it is very important to find relationship between the structure of the carbon material and the electrical parameters of supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

“…It was reported [1,[6][7][8][9][10][11] that the capacitive behaviour of the carbon-based materials can be further improved by the presence of various metal oxides (ruthenium oxide, nickel oxide, manganese oxide) or conductive polymers. These electrochemical supercapacitors combine the advantages of both double-layer capacitance and pseudocapacitance.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Capacitance of Porous Carbon Electrodes through Deposition of Small Amounts of NiO

Kavaliauskas¹,

Marcinauskas²,

Valatkevičius³

2011

Acta Phys. Pol. A

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Amorphous carbon and NiO/carbon composites were used as an electrode material for supercapacitors. The investigations were performed to evaluate the influence of the Ar/C 2 H 2 ratio on the capacitance values of carbon and NiO/carbon electrodes. The surface morphology of the carbon electrodes changes from snowflake-like to columnar with the increase of the Ar/C 2 H 2 ratio. The Raman scattering spectroscopy results demonstrated that the I D /I G ratio decreases from 1.33 to 0.91 with the increase of the Ar/C 2 H 2 ratio. It indicates the decrease of the sp 2 bonded carbon in the coatings. The specific capacitance of the carbon electrodes increases with the increase of the Ar/C 2 H 2 ratio. The NiO/carbon electrodes show capacitance values 10 times larger as those of carbon electrodes. The largest specific capacitance of 27.7 F/g was obtained for NiO/carbon electrode, when carbon coating was deposited under Ar/C 2 H 2 = 27.

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“…have a major inuence on the supercapacitors parameters (capacity, stability voltage, and charge-discharge time). Additionally, the nanopore diameter has a signicant eect on capacity [4,7]. At a very low pore diameter, capacity decreases, although the surface area can be very high [8,9].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Oxygen Plasma Treatment on Carbon Electrode and Capacity of Supercapacitors

2014

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Amorphous carbon electrodes were deposited using atmospheric pressure plasma torch from the mixture of argon and acetylene gases on the stainless steel substrates. The ratio of Ar/C2H2 was in the range of 1555. The deposited coatings were immersed in low pressure oxygen plasma for 1 min. Scanning electron microscopy images show that when Ar/C2H2 ratio increases from 15 to 55, the electrodes surface roughness decreases. The Raman scattering spectroscopy results indicated that the ID/IG ratio decreases from 2.04 to 1.35. It was observed that with the increase of Ar/C2H2 ratio from 15 to 55, the capacity of supercapacitor increases from 16 mF to 36 mF. The electric capacity of capacitors has increased up to 7 times after their exposure in oxygen plasma.

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A novel nickel-based mixed rare-earth oxide/activated carbon supercapacitor using room temperature ionic liquid electrolyte

Cited by 97 publications

References 27 publications

Biosensors of laccase based on hydrophobic ionic liquids derived from imidazolium cation

Biosensors of laccase based on hydrophobic ionic liquids derived from imidazolium cation

Enhanced Capacitance of Porous Carbon Electrodes through Deposition of Small Amounts of NiO

Influence of the Oxygen Plasma Treatment on Carbon Electrode and Capacity of Supercapacitors

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