Nanoporous carbon microspheres from carrot juice used as a counter electrode for a dye-sensitized solar cell

Lowpa, Seksan; Pimanpang, Samuk; Maiaugree, Wasan; Saekow, Samarn; Uppachai, Pikaned; Mitravong, Santipap; Amornkitbamrung, Vittaya

doi:10.1016/j.matlet.2015.05.039

Cited by 18 publications

(3 citation statements)

References 18 publications

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“…An annealing process was then performed to increase the conductivity and surface area (149.10 m 2 /g) of the resulting microspheres. The efficiency of the cell using this CMS CE was 0.17% before annealing and 7.71% after annealing (Lowpa et al, 2015). Maiaugree et al (2015a) synthesized a mangosteen peel carbon (MPC) using a sintering process and applied it as a catalyst with a large surface area of 125 m 2 /g, in a DSSC comprising a T 2 /T − electrolyte.…”

Section: Carbon and Carbon-based Materialsmentioning

confidence: 99%

Fabrication of Functional Materials for Dye-sensitized Solar Cells

2021

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Dye-sensitized solar cells (DSSCs) have been developed as a promising photovoltaic cell type in recent decades because of their low cost, environmental friendliness, ease of fabrication, and suitability for a wide range of indoor and outdoor applications, especially under diverse shaded and low-light condition. They are typically composed of three main components: a transparent conducting oxide (TCO) substrate-based working electrode with wide-bandgap semiconductors and dye sensitizer molecules, an electrolytic mediator based on redox couple species, and a TCO-based counter electrode consisting of catalyst materials. The development of intrinsic and functional organic, inorganic, metal oxide, composite, and carbon-based materials has been intensively studied to enhance the efficiency of DSSCs. A simple and low-cost fabrication process that uses natural products is also considered essential for further large-scale production. In this article, we review the fabrication of various functional materials and their effects on DSSC performance.

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Section: Carbon and Carbon-based Materialsmentioning

confidence: 99%

Fabrication of Functional Materials for Dye-sensitized Solar Cells

2021

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“…The carbon sphere (CS) is also a promising candidate for CE due to its high uniformity, large accessible surface area, large surface‐to‐volume ratio, excellent thermal and chemical stabilities, and tunable conductivity and catalytic activity by controlling the diameter, structure, and element doping . We designed and synthesized solid carbon spheres (SCSs) for use as the CE in DSC .…”

Section: Carbon Counter Electrode In the Dye‐sensitized Solar Cellmentioning

confidence: 99%

Carbon Counter Electrodes in Dye‐Sensitized and Perovskite Solar Cells

Sun

Zhou

et al. 2019

Adv Funct Materials

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Developing highly effective and stable counter electrode (CE) materials to replace rare and expensive noble metals for dye‐sensitized and perovskite solar cells (DSC and PSC) is a research hotspot. Carbon materials are identified as the most qualified noble metal‐free CEs for the commercialization of the two photovoltaic devices due to their merits of low cost, excellent activity, and superior stability. Herein, carbonaceous CE materials are reviewed extensively with respect to the two devices. For DSC, a classified discussion according to the morphology is presented because electrode properties are closely related to the specific porosity or nanostructure of carbon materials. The pivotal factors influencing the catalytic behavior of carbon CEs are also discussed. For PSC, an overview of the new carbon CE materials is addressed comprehensively. Moreover, the modification techniques to improve the interfacial contact between the perovskite and carbon layers, aiming to enhance the photovoltaic performance, are also demonstrated. Finally, the development directions, main challenges, and coping approaches with respect to the carbon CE in DSC and PSC are stated.

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“…Arc discharge, laser ablation and plasma processes, stock compression, chemical vapor deposition (catalytic and non-catalytic), autoclave (catalytic and noncatalytic) and carbonization techniques have been used to prepare the CMS [2]. Due to their microsizes, high specific surface area, good mechanical stability, chemical inertness, good adsorption performance and surface functionality, the CMS have been used in many applications such as lithium batteries, catalyst support, drug delivery and solar cells [3,4] The conversion of biomass into the CMS can be performed by a hydrothermal method which is known to be an efficient environmental-friendly process. The operation is conducted in a closed system at low temperatures using water as a solvent [5].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Solid Carrot Spheres

Chayasombat

Yordsri

Amornkitbamrung

et al. 2018

SSP

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In this study, hydrothermal carbonization of carrot juice was conducted at 180 °C for 6 hours, followed by annealing at 500 °C for 6 hours. In the absence of a catalyst, hydrothermal carbonization of carrot juice produced hollow and solid carbon microspheres (CMS) with diameters ranging from 0.3 to 4.0 µm. SEM and TEM images of the CMS showed various morphologies and sizes. X-ray diffraction and Raman spectroscopy indicated the CMS had a disordered graphitic structure. A HAADF micrograph showed that although the majority of the CMS in this study were hollow, there were also solid spheres which had not previously been reported for hydrothermal carbonization. STEM EDS mapping of a solid CMS indicated approximately 95 wt% of C with traces of N, O, Si, P, S, Cl and K. The effect of the starting precursors on the hard sphere formation mechanism is discussed.

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Nanoporous carbon microspheres from carrot juice used as a counter electrode for a dye-sensitized solar cell

Cited by 18 publications

References 18 publications

Fabrication of Functional Materials for Dye-sensitized Solar Cells

Fabrication of Functional Materials for Dye-sensitized Solar Cells

Carbon Counter Electrodes in Dye‐Sensitized and Perovskite Solar Cells

Hydrothermal Solid Carrot Spheres

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