The electrode was prepared using the following procedure. A mixture of the carbon powder, 60% PTFE dispersion, 2-propanol, and deionized water was dispersed using a mixer (Thinky AR-100). The slurry was deposited on the surface of a carbon fiber paper (Toray TGP-H-090) using a screen-printing technique and then dried at 120°C in air to remove the solvent. The loading of carbon was adjusted to ca. 4.5 mg cm−2. Two identical 12 mm diameter electrode disks were punched from the carbon fiber paper. Prior to fabrication of the supercapacitor assembly, these electrodes were immersed in the H3PO4 ionomer. A 14 mm diameter electrolyte membrane was sandwiched between the two electrodes attached to stainless steel current collectors. The supercapacitor was then sealed using thermal- and chemical-resistant PTFE tape (Nitto Denko, Nitoflon).
Tgp h 090
Manufactured by Toray
Sourced in Japan
The TGP-H-090 is a laboratory equipment product manufactured by Toray. It is designed to perform specific tasks within a controlled laboratory environment. The core function of this equipment is to [core function description]. No further details or interpretations about the intended use or applications of this product are provided.
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Lab products found in correlation
5 protocols using tgp h 090
1
Fabrication of Supercapacitor Electrodes
2
Hydrothermal Synthesis of Graphene Hydrogel
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Firstly, GH was synthesized by hydrothermal treatment of graphene oxide (GO) [24 (link),25 (link)]. 14 mL GO aqueous dispersion (2 mg·mL−1, Nanjing XFNANO Materials Tech. Co., Ltd., Jiangsu, China) was added into a 22 mL Telfon-lined autoclave, and hydrothermally treated at 180 °C for 4 h. The prepared cylindrical GH was picked out and kept in distilled water for further use. For fabricating GH based electrodes, GH was cut into small slices and pressed onto the hydrophilic carbon paper (TGP-H-090, Toray Industries Inc., Tokyo, Japan) with the size of ca. 1 cm × 3 cm. The mass for each dried GH was measured to ca. 12 mg. The number of the used GH slices depended on the mass of GH loading on carbon paper. GHE with mass loadings of 2.7 mg·cm−2 at 0.64 cm2, 4.1 mg·cm−2 at 0.68 cm2, and 2.7 mg·cm−2 at 1.07 cm2, were referred to as GHE1, 2 and 3, respectively. The obtained GHE were immersed in 1 M KOH aqueous electrolyte overnight before carrying out electrochemical measurements.
3
Fabrication of Vanadate Nanobelts Electrode
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The working electrode was fabricated by mixing vanadate nanobelts (70 wt%) as the active material, with Super P (20 wt%) as the conductive material, and polytetrafluoroethylene (10 wt%) as the binder. The electrode was fabricated by dropping the mixed slurry into the carbon paper and the active material was then absorbed onto the carbon fibers. The carbon paper was bought from Toray Industries, Inc. (Japan, TGP-H-090), and the thickness of the carbon paper was 0.28 mm. The electrode was cut into a circular disk (d = 11 mm) with the area of about 1.0 cm2, and the mass loading is about 0.7 mg cm−2. To evaluate the electrochemical performance, the battery testing was conducted in 2032 coin-type cells with the above aqueous solution as the electrolyte, glass fiber filter as a separator, and Zn metal foil as an anode.
4
Microbial Fuel Cell Optimization
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Single-chamber MFCs with volume of 14 mL were constructed as previously described (Xing et al., 2008 (link)). Anodes were made of carbon paper (Toray TGP-H-090, Japan), while cathodes were stainless steel mesh by rolling activated carbon and polytetrafluoroethylene (PTFE) (Dong et al., 2012 (link)) (the area of anode and cathode were both 7 cm2). Domestic wastewater was used as inoculum in the first 5 days. Nutrient solutions were consisted of 1 g/L sodium acetate, 5 mL/L vitamins, 12.5 mL/L minerals, 100 mM phosphate buffer saline (PBS, pH of 6) and FeSO4 with different concentrations. The final pH value of nutrient solution was 6.2 ± 0.1. The final concentrations of FeSO4 in MFCs were 32 (control), 100, 150, and 200 μM.
Voltages across the external resistor (1000 Ω) of MFCs were measured using Keithley 2700 multimeter/data acquisition system. All MFCs were operated at 35°C and each Fe2+ concentration have three replicates. Cyclic voltammetry (CV) measurements of MFCs at the 15th day were performed on Autolab potentiostat (Metrohm, Netherlands) with scan rate of 0.01 V/s.
Voltages across the external resistor (1000 Ω) of MFCs were measured using Keithley 2700 multimeter/data acquisition system. All MFCs were operated at 35°C and each Fe2+ concentration have three replicates. Cyclic voltammetry (CV) measurements of MFCs at the 15th day were performed on Autolab potentiostat (Metrohm, Netherlands) with scan rate of 0.01 V/s.
5
Vanadium Sulfate Electrochemical Characterization
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Graphitic carbon paper (TGP-H-090, Toray, abbreviated as TGP), tin phthalocyanine (SnPc, Sigma-Aldrich), and ethanol (99.5%, Nacalai Tesque) were used as received. High-purity water was obtained by circulating ion-exchanged water through an Easypure water-purification system (Barnstead, D7403). Sulfuric acid (6 M, Kishida Chemical Co., Ltd.) was diluted with the high-purity water to prepare a 2 M H2SO4 solution. Oxovanadium sulfate hydrate, VOSO4·nH2O, was purchased from Sigma-Aldrich (purity > 99.99%) and Nacalai Tesque, which was dissolved in 2 M H2SO4 to prepare VOSO4 (1 M)/H2SO4 (2 M). The number of water of hydration, n, was provided by the manufacturer or determined in advance by thermogravimetry and a differential thermal analysis using an SSC/5200 thermal analyzer (Seiko Instruments).
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