Graphene–polyethylenedioxythiophene conducting polymer nanocomposite based supercapacitor

Alvi, Farah; Ram, Manoj K.; Basnayaka, Punya A.; Stefanakos, Elias K.; Goswami, Yogi; Kumar, Ashok

doi:10.1016/j.electacta.2011.08.024

Cited by 279 publications

(111 citation statements)

References 32 publications

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“…Conducting polymers such as polyaniline, polyethylenedioxythiophene, and PPy are frequently-used electrode materials of electrochemical capacitors for enhancing the pseudocapacitance. 26,27 It can be assumed that the amount of electric charge in the form of a structure-involved pseudocapacitance remains unchanged, considering that the NPS/PPy is the common basic electrode substrate in this work, and the doped DNA is the major factor affecting the amount of current flow. The electrode capacitance increases after pDNAimmobilization, and further enhances upon tDNA-hybridization.…”

Section: Resultsmentioning

confidence: 99%

Label-free Electrochemical Detection of the Human Adenovirus 40/41 Fiber Gene

Song

Jin

2015

ANAL. SCI.

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A nanoporous silicon-based label-free DNA biosensor was fabricated to monitor rapidly enteric adenovirus types 40 and 41, a leading cause of viral gastroenteritis in children. Nanoporous silicon (NPS) was formed by an anodic etching process in a mixture solution containing hydrofluoric acid and ethanol. The polypyrrole (PPy) film was directly electropolymerized on The NPS substrate. Twenty-five base pairs of probe DNA (pDNA), derived from the fiber gene, was electrochemically doped on the PPy-coated NPS substrate. The conductivity change due to the immobilized pDNA and hybridized target DNA (tDNA) was expressed as an arbitrary factor, γ, which is a normalized numerical term used for the selective quantification of the tDNA. γ was inversely proportional to the concentration of complementary tDNA, but independent of the non-complementary tDNA. The sensitivity slope for detecting tDNAc was -1.54 μM -1 , based on the factor γ in the range of 0.4 to 1.0 μM of tDNA. The surface roughness was characterized using atomic force microscopy.

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Section: Resultsmentioning

confidence: 99%

Label-free Electrochemical Detection of the Human Adenovirus 40/41 Fiber Gene

Song

Jin

2015

ANAL. SCI.

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“…11. The diagram explains how the movement of anions (Cl -) and cations (K + ) occurs in the electrochemical double layer capacitor (EDLC) during charging and discharging [41,42]. The main mechanisms for the EDLC take place from the reversible adsorption of electrolyte ions (here, K + and Cl -) on the surface of the electrode materials.…”

Section: Galvanostatic Charge Discharge (Gcd)mentioning

confidence: 99%

Transition metal doped poly(aniline-co-pyrrole)/multi-walled carbon nanotubes nanocomposite for high performance supercapacitor electrode materials

Dhibar

Bhattacharya

Hatui

et al. 2015

Journal of Alloys and Compounds

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“…Graphene forms a colloidal mixture and has also been used in making nanocomposites with conducting polymer for supercapacitor applications [26][27][28]. In the current study, graphene was introduced as a partial replacement of Portland cement at various ratios to understand its effect on the heat dissipation in cementitious paste during the cement hydration.…”

Section: Open Access Ojcmmentioning

confidence: 99%

Investigation of Physical Properties of Graphene-Cement Composite for Structural Applications

Sedaghat¹,

Ram²,

Zayed³

et al. 2014

OJCM

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112

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The hydration of cement generates heat due to the exothermic nature of the hydration process. Poor heat dissipation in mass concrete results in a temperature gradient between the inner core and the outer surface of the element. High temperature gradients generate tensile stresses that may exceed the tensile strength of concrete thus leading to thermal cracking. The present paper is an attempt to understand the thermal (heat sink property) and microstructural changes in the hydrated graphene-Portland cement composites. Thermal diffusivity and electrical conductivity of the hydrated graphene-cement composite were measured at various graphene to cement ratios. The mass-volume method was implemented to measure the density of the hydrated graphene-cement composite. Particle size distribution of Portland cement was measured by using a laser scattering particle size analyzer. Heat of hydration of Portland cement was assessed by using a TAMAIR isothermal conduction calorimeter. Scanning electron microscopy (SEM) was implemented to study microstructural changes of the hydrated graphene-cement composites. The mineralogy of graphene-cement and the hydrated graphene-cement composites was investigated by using X-ray diffraction. The findings indicate that incorporation of graphene enhances the thermal properties of the hydrated cement indicating a potential for reduction in early age thermal cracking and durability improvement of the concrete structures.

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Graphene–polyethylenedioxythiophene conducting polymer nanocomposite based supercapacitor

Cited by 279 publications

References 32 publications

Label-free Electrochemical Detection of the Human Adenovirus 40/41 Fiber Gene

Label-free Electrochemical Detection of the Human Adenovirus 40/41 Fiber Gene

Transition metal doped poly(aniline-co-pyrrole)/multi-walled carbon nanotubes nanocomposite for high performance supercapacitor electrode materials

Investigation of Physical Properties of Graphene-Cement Composite for Structural Applications

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