Carbon materials for the electrochemical storage of energy in capacitors

Frąckowiak, Elżbieta; Béguin, François

doi:10.1016/s0008-6223(00)00183-4

Cited by 4,281 publications

(2,612 citation statements)

References 41 publications

Supporting

Mentioning

2,542

Contrasting

Unclassified

Order By: Relevance

“…It is worth stating that for ideal supercapacitors, the EIS (Nyquist) plot should be a line perpendicular to the imaginary axis. From the Nyquist plot, the slope at low frequencies can also be used to evaluate the capacitive performance [43]. However, a comparison of both samples shows that the Nyquist plot of GF/Ag is much closer to the ideal behaviour, thus indicating a better capacitive behaviour.…”

Section: Resultsmentioning

confidence: 99%

Silver nanoparticles decorated on a three-dimensional graphene scaffold for electrochemical applications

Bello

Fabiane

Dodoo‐Arhin

et al. 2014

Journal of Physics and Chemistry of Solids

View full text Add to dashboard Cite

Silver metal nanoparticles were decorated by electron beam evaporation on graphene foam (GF) grown by chemical vapour deposition. X-ray diffraction, Raman spectroscopy, scanning and transmission electron microscopy, and atomic force microscopy were used to investigate the structure and morphology of the graphene foam/silver nanoparticles (GF/Ag). Both samples were tested as electrodes for supercapacitors. The GF/Ag exhibited a significantly higher capacitive performance, including a specific capacitance value of (~110 Fg -1 ) and excellent cyclability in a three-electrode electrochemical cell. These results demonstrate that graphene foam could be an excellent platform for metal particles for investigating improved electrochemical performance.

show abstract

Section: Resultsmentioning

confidence: 99%

Silver nanoparticles decorated on a three-dimensional graphene scaffold for electrochemical applications

Bello

Fabiane

Dodoo‐Arhin

et al. 2014

Journal of Physics and Chemistry of Solids

View full text Add to dashboard Cite

show abstract

“…[4][5][6] Charge storage in EDLC is mainly based on electrostatic attraction, i.e. pure double-layer charging.…”

Section: Supercapacitorsmentioning

confidence: 99%

Supercapacitors based on carbon materials and ionic liquids

Frąckowiak¹

2006

J. Braz. Chem. Soc.

Self Cite

112

View full text Add to dashboard Cite

Este artigo descreve o desempenho de supercapacitores construídos a partir de diferentes materiais de carbono. São descritos também o princípio geral de supercapacitor e a fórmula associada com sua operação. A função da nanotextura de carbono é enfatizada, selecionando carbonos preparados por técnicas de moldagem. Foi demonstrado que, principalmente, microporos e pequenos mesoporos são importantes para carregar a dupla camada elétrica, entretanto, a interligação de poros é crucial para a propagação de cargas. A presença de heteroátomo na rede de carbono, por exemplo nitrogênio, é útil por causa das reações faradaicas reversíveis adicionais. Foi encontrada uma dependência linear entre os valores de capacitância e a quantidade de nitrogênio. Líquidos iônicos são atualmente considerados como uma nova geração de eletrólitos com propriedades interessantes, por exemplo, alta voltagem de operação. Um aumento na voltagem de supercapacitores (acima de 3V) foi obtido pela aplicação de líquidos iônicos baseados em sais de fosfônio. This paper presents performance of supercapacitor built from different carbon materials. The general principle of supercapacitor and formula connected with its operation are also described. The role of carbon nanotexture has been underlined selecting carbons prepared by template techniques. It has been demonstrated that mainly micropores and small mesopores play important role for charging of electrical double layer, however, interconnectivity of pores is crucial for charge propagation. The presence of heteroatom, e.g. nitrogen in the carbon network is profitable because of additional reversible faradaic reactions. A linear dependence of capacitance values vs nitrogen content has been found. Ionic liquids are presently considered as a novel generation of electrolyte with interesting properties, e.g. a high operating voltage. An increase of supercapacitor voltage (over 3V) has been realized by application of ionic liquids based on phosphonium salt.

show abstract

“…There are many application areas, among them dyes, vitamins, polymer and bio-molecules adsorption as well as catalyst preparation, which require well-developed mesoporosity of carbon material [4]. Activated carbons considered as catalyst carrier, material for hydrogen or methane storage or electrode material for electric double-layer capacitors or supercapacitors should also be characterized by high contribution of mesopores [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

Lorenc-Grabowska

Rutkowski

2018

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

In this work it was shown that polymers can be recycled into a promising adsorbent for organic dyes and phenols waste removal. For this, a series of activated carbons (ACs) were produced from mixture of ferrocene or titanium acetylacetonate with poly(furfuryl alcohol) (PFA) by steam activation. The introduction of ferrocene as Fe precursor was found to be an efficient catalyst in mesoporosity development during carbonization and subsequent steam activation at 850 °C, whereas the polymer based only and titanium-doped ACs are typically microporous. The porous structure parameters were determined from nitrogen adsorption isotherms measured at 77 K. Scanning electron microscopy was applied to monitor the metal distribution of metal-loaded char and the surface morphology of activated carbons. The adsorption capacity was found to be dependent mainly on pore size distribution. In the case of phenol adsorption, the adsorption was defined by volume of pore with size 0.8-1.4 nm; whereas, for Congo red best fit was observed for volume of pore with size 2-5 nm.

show abstract

Carbon materials for the electrochemical storage of energy in capacitors

Cited by 4,281 publications

References 41 publications

Silver nanoparticles decorated on a three-dimensional graphene scaffold for electrochemical applications

Silver nanoparticles decorated on a three-dimensional graphene scaffold for electrochemical applications

Supercapacitors based on carbon materials and ionic liquids

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

Contact Info

Product

Resources

About