Three-dimensional activated porous carbon with meso/macropore structures derived from fallen pine cone flowers: A low-cost counter electrode material in dye-sensitized solar cells

Nagaraju, Goli; Lim, Joo Ho; Min, Sung

doi:10.1016/j.jallcom.2016.10.015

Cited by 74 publications

(27 citation statements)

References 59 publications

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“…The HAPC samples were prepared by a facile alkali treatment and carbonization process of pine cone flowers38. At first, the pine cone flowers were collected in a glass beaker and thoroughly washed with ethanol and de-ionized (DI) water to remove the adhered impurities and dust particles.…”

Section: Methodsmentioning

confidence: 99%

Ultrathin nickel hydroxide nanosheet arrays grafted biomass-derived honeycomb-like porous carbon with improved electrochemical performance as a supercapacitive material

Nagaraju

Min

2017

Sci Rep

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Three-dimensional hierarchical honeycomb-like activated porous carbon pillared ultrathin Ni(OH)2 nanosheets (Ni(OH)2 NSs@HAPC) for use as supercapacitor materials were facilely synthesized. With an aid of pine cone flowers as a biomass source, HAPC conducting scaffolds were prepared by the alkali treatment and pyrolysis methods under an inert gas atmosphere. Subsequently, the Ni(OH)2 NSs were synthesized evenly on the surface of HAPC via a solvothermal method. The resulting HAPC and Ni(OH)2 NSs@HAPC composite materials offered free pathways for effective diffusion of electrolyte ions and fast transportation of electrons when employed as an electrode material. The Ni(OH)2 NSs@HAPC composite electrode exhibited excellent electrochemical properties including a relatively high specific capacitance (Csp) value of ~ 916.4 F/g at 1 A/g with good cycling stability compared to the pristine HAPC and Ni(OH)2 NSs electrodes. Such bio-friendly derived carbon-based materials with transition metal hydroxide/oxide composite materials could be a promising approach for high-performance energy storage devices because of their advantageous properties of cost effectiveness and easy availability.

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Section: Methodsmentioning

confidence: 99%

Ultrathin nickel hydroxide nanosheet arrays grafted biomass-derived honeycomb-like porous carbon with improved electrochemical performance as a supercapacitive material

Nagaraju

Min

2017

Sci Rep

Self Cite

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“…The morphology of porous carbon materials is usually characterized by using scanning electron microscopy (SEM) or field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). Figure 8(a)-(c) shows the FE-SEM images for the surface morphology and microstructures of honeycomb-like activated porous carbons (HPCs) [29]. As shown in Figure 8(a), the micro-sized particles of the as-prepared sample revealed a honeycomb-like morphology containing a huge number of minute holes over its entire frameworks.…”

Section: Morphological and Structural Characterization Of Porous Carbmentioning

confidence: 98%

Porous Carbon Materials as Supreme Metal-Free Counter Electrode for Dye-Sensitized Solar Cells

Aftabuzzaman¹,

Kim²

2018

Emerging Solar Energy Materials

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Counter electrode (CE), as one of the key components of dye-sensitized solar cells (DSSCs), plays a significant role in the overall efficiency and cost of the device. Platinum metal has long been considered one of the most efficient CEs for DSSCs, but its scarcity, high cost, and low stability in I − /I 3 − redox couple limit its application in the large scale. In this chapter, we provide a broad overview on porous carbon materials as supreme metalfree counter electrode for DSSCs. In the first part, we concisely discuss on the importance and working principle of DSSCs and then the influence of counter electrode on the photovoltaic performance of DSSCs. Afterward, we review different synthetic methods and precursors of porous carbon materials and their efficiency in DSSCs. In the last section, we discuss in detail with example how to characterize and evaluate the device performance using porous carbon materials as counter electrode. Finally, we finish this chapter with a brief summary and outlook of porous carbon materials as counter electrodes in DSSCs.

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“…As the first testing device using a biliverdin solution, we constructed working prototypes of the biliverdin-based biophotosensors. Specifically, we mimicked the simple device structure of typical dye-sensitized solar cells, as commonly used elsewhere [32,33]. First, a photoanode electrode was prepared on the conducting side of FTO glass substrate by coating a commercial transparent TiO 2 paste.…”

Section: Device Fabrication Of Biliverdin-based Biophotosensor Prototmentioning

confidence: 99%

Visible light biophotosensors using biliverdin from Antheraea yamamai

et al. 2018

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We report an endogenous photoelectric biomolecule and demonstrate that such a biomolecule can be used to detect visible light. We identify the green pigment abundantly present in natural silk cocoons of Antheraea yamamai (Japanese oak silkmoth) as biliverdin, using mass spectroscopy and optical spectroscopy. Biliverdin extracted from the green silk cocoons generates photocurrent upon light illumination with distinct colors. We further characterize the basic performance, responsiveness, and stability of the biliverdin-based biophotosensors at a photovoltaic device level using blue, green, orange, and red light illumination. Biliverdin could potentially serve as an optoelectric biomolecule toward the development of next-generation implantable photosensors and artificial photoreceptors.

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Three-dimensional activated porous carbon with meso/macropore structures derived from fallen pine cone flowers: A low-cost counter electrode material in dye-sensitized solar cells

Cited by 74 publications

References 59 publications

Ultrathin nickel hydroxide nanosheet arrays grafted biomass-derived honeycomb-like porous carbon with improved electrochemical performance as a supercapacitive material

Ultrathin nickel hydroxide nanosheet arrays grafted biomass-derived honeycomb-like porous carbon with improved electrochemical performance as a supercapacitive material

Porous Carbon Materials as Supreme Metal-Free Counter Electrode for Dye-Sensitized Solar Cells

Visible light biophotosensors using biliverdin from Antheraea yamamai

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