Developing the processing stages of carbon fiber composite paper as efficient materials for energy conversion, storage, and conservation

Maheshwari, Priyanka H.

doi:10.1016/j.mset.2019.04.004

Cited by 11 publications

(8 citation statements)

References 114 publications

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“…43,49 The probable explanation of the observation can be given as follows. As mentioned previously, 43,62 one of the reasons for the conductivity in carbon paper is the stress graphitization of the matrix occurring at the fiber/matrix interface. In the present case, the pore former in the matrix acts as a separate phase, which on heating and excavation may generate stresses in the matrix (due to the difference in the thermal properties of the two), leading to its graphitization.…”

Section: Resultsmentioning

confidence: 94%

Configuring the Porosity and Microstructure of Carbon Paper Electrode Using Pore Formers and Its Influence on the Performance of PEMFC

et al. 2020

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Carbon papers (CPs) are used as an electrode backing in PEMFC. It assists the diffusion of both the reactant gases and products toward and from the reaction site and aids the flow of electrons. CP is a carbon/carbon composite made by patterning of carbon fibers in the form of highly porous sheets called preforms, followed by composite formation. Different pore formers have been incorporated into the CP, and their effect on porosity, permeability, structure, and electrical conductivity have been analyzed and found to be significant. The unit PEMFC shows a peak output power density of 797.2 and 756.8 mW/cm 2 with camphor and urea as pore formers, compared to 576.2 mW/cm 2 obtained using the paper prepared without pore former. The effect of pore formers on the separate sections of the polarization curves has been discussed. Further, samples with urea and camphor show comparable performance with the commercial SGL paper.

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Section: Resultsmentioning

confidence: 94%

Configuring the Porosity and Microstructure of Carbon Paper Electrode Using Pore Formers and Its Influence on the Performance of PEMFC

et al. 2020

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“…Also, the process of acid treatment corrodes the samples, making the fiber weak. Nevertheless, the strength of all the samples is greater than 20 MPa which is sufficient to hold the structure [38,39] …”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the strength of all the samples is greater than 20 MPa which is sufficient to hold the structure. [38,39] The untreated carbon paper has the porosity of 83.3 � 1.2 %, which further increases to 88.2 � 1.8 % with the increase in number of defect sites for treated samples (COCP-60). Furthermore, the surface area of the samples was studied using N 2 adsorption-desorption plots as represented in Figure 4 (c).…”

Section: Physico-mechanical Studiesmentioning

confidence: 99%

Chemically Oxidized Carbon Paper as a Free‐Standing Electrode for Supercapacitor: An Insight into Surface and Diffusion Contribution

et al. 2023

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Carbon paper has been synthesized by paper making process followed by composite formation, and further chemically oxidized by immersing into a mixture of sulphuric acid and potassium dichromate to be used as an electrode for supercapacitor applications. XRD and Raman spectra were used to analyze the structure, and the defects in the samples respectively, in due course of oxidation. FESEM images revealed the morphology of oxidized samples to be rougher, which contributes towards increased active sites for reaction. The sample (COCP‐60) optimized via electrochemical studies, was further tested in various electrolytes to study the electrode/electrolyte interaction. It delivered a highest areal capacitance of 6.02 F/cm2 (231.5 F/g) in acidic electrolyte at a current density of 5 mA/cm2 (0.19 A/g). This findings were further corroborated by surface and diffusion contribution studies wherein it was found that diffusion is more profound with acidic electrolyte. The supercapacitor device fabricated with COCP‐60 electrode delivered an energy density of 0.41 Wh/cm2 at 2.83 W/cm2 power density with coulombic efficiency of 98 %, and cyclic stability of ∼90 % for over 5000 cycles.

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“…Heaters are heat-transferring devices that are commonly used in cold weather, chilly areas, and for many more heat-transferring applications, [1][2][3][4] where conductive heaters take the electrical energy as input and convert it into heat energy as output. 3,[5][6][7][8][9] Generally, conductive heaters possess different configurations, such as linear and twodimensional (2D) configuration, 10,11 that exhibits different input and output powers. The filament-type heater has a linear configuration, whereas the sheet-type heater possesses two-dimensional (2D) configuration that exhibits easy control and uniform heating on the surface.…”

Section: Introductionmentioning

confidence: 99%

Development of chopped (non‐woven) carbon fiber reinforced composite sheet and its electrothermal performance for heating applications

2023

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Non‐woven carbon fiber sheet‐based heaters have been used for various thermal and material science applications, which possess rapid thermal heating at low input power. This work investigates the optimization of chopped carbon fiber composite sheet for heating applications. Here, different lengths of chopped carbon fiber have been used to fabricate the composite sheet. The parameters of composite sheets, such as morphology, porosity, electrical conductivity, mechanical property, and thermal stability, were studied. Besides, the electrothermal performance of prepared sheet heaters was investigated, and the results were compared at the input voltages of 10 and 12 V. The input power consumed by different sheet heaters was also investigated. The optimal chopped size of the carbon fiber composite sheet showed the highest surface thermal heating temperature of 245°C at 12 V.

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Developing the processing stages of carbon fiber composite paper as efficient materials for energy conversion, storage, and conservation

Cited by 11 publications

References 114 publications

Configuring the Porosity and Microstructure of Carbon Paper Electrode Using Pore Formers and Its Influence on the Performance of PEMFC

Configuring the Porosity and Microstructure of Carbon Paper Electrode Using Pore Formers and Its Influence on the Performance of PEMFC

Chemically Oxidized Carbon Paper as a Free‐Standing Electrode for Supercapacitor: An Insight into Surface and Diffusion Contribution

Development of chopped (non‐woven) carbon fiber reinforced composite sheet and its electrothermal performance for heating applications

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