A novel aqueous plasma electrolysis for carbon fiber

Chen

et al. 2017

Ind. Eng. Chem. Res.

Self Cite

The Al2O3–Y2O3 coating was successfully prepared by cathodic plasma electrolysis on the FeCrAl wire. Influences of the electrolyte composition and the processing parameters on the microstructure and property of the Al2O3–Y2O3 ceramic coating were systematically investigated. The coating was mainly composed of γ-Al2O3, α-Al2O3, and Y2O3. Experimental results showed that the thickness of the coating was gradually increased with the increase of working voltage, while the bonding became poor. With an increase in the deposition time, the thickness and the electrical resistance of the Al2O3–Y2O3 coating were increased in a certain range. When the Al2O3–Y2O3 coating was deposited at 110 V for 60–90 s, the bonding between the coating and the substrate was superior, and the coating microstructure was dense, continuous, and uniform with the electrical resistance reaching up to ∼40 MΩ. The formation mechanism of the coating was also discussed based on the electrochemical mechanism and the plasma discharge.

Section: Methodsmentioning

confidence: 99%

“…A continuous vapor envelope around the work piece is broken down at a critical voltage, resulting in the generation of plasma discharge in the near-cathode region. Compared with the conventional electrolysis process, the aqueous cathodic plasma electrolysis process can generate new physical-chemical effects and obtain a new coating. − …”

Section: Introductionmentioning

confidence: 99%

Synthesis of Al₂O₃–Y₂O₃ Ceramic Coatings on the Fe–Cr–Al Wire via Aqueous Cathodic Plasma Electrolysis

Chen

et al. 2017

Ind. Eng. Chem. Res.

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“…Therefore, it is urgent to seek an efficient, environmentally friendly, and low−cost technology for realizing a composite of biomass−derived porous carbon and Co 3 O 4 . In this study, a novel assisted liquid−phase plasma electrolysis [15][16][17] was proposed to realize the high−efficiency composite of biomass−derived porous carbon and Co 3 O 4 . Assisted liquid−phase plasma electrolysis was developed on the basis of chemical vapor deposition (CVD), electrodeposition, and traditional cathode plasma electrolysis.…”

Section: Introductionmentioning

confidence: 99%

“…Assisted liquid−phase plasma electrolysis was developed on the basis of chemical vapor deposition (CVD), electrodeposition, and traditional cathode plasma electrolysis. Compared with the traditional electrolysis, the assisted liquid−phase plasma electrolysis process can produce the thermal, mechanical, and physical−chemical effects, obtaining a unique microstructure of composites [15]. The plasma effect generated in the assisted liquid−phase plasma electrolysis process increases the number of nucleation points and promotes the uniformity of nucleation, thereby achieving an efficient, rapid, and one−step synthesis of Co 3 O 4 on biomass−derived porous carbon.…”

Section: Introductionmentioning

confidence: 99%

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

Wang

et al. 2022

Crystals

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In this study, a novel assisted liquid−phase plasma electrolysis was developed to realize one−step synthesis of popcorn biomass−derived porous carbon/cobalt tetroxide (popcorn−carbon/Co3O4) composites, effectively improving the structural stability and conductivity of Co3O4. The phase structure, morphologies, chemical composition, and weight ratio of the as−prepared popcorn−carbon/Co3O4 composites were systematically analyzed. The results of X−ray diffraction (XRD), Raman spectrometer, Fourier infrared spectrometer (FTIR), X−ray photoelectron spectrometer (XPS), and thermogravimetry analyzer (TG) proved the synthesis of the popcorn−carbon/Co3O4 composites. Co3O4 nanoparticles were distributed relatively uniformly on the popcorn−carbon surface. The electrochemical properties of the popcorn−carbon/Co3O4 composite electrode materials were analyzed for exploring the influence of different Co/C ratios on the electrochemical properties of composites. The results showed that the popcorn−carbon/Co3O4 composite electrode materials prepared under 200:1 mass ratio of Co(NO3)2·6H2O and popcorn−carbon possessed a specific capacitance and specific capacity of almost 1264 F/g (594 C/g) at a current density of 1 A/g, exhibiting a better electrochemical property. The efficient, fast, and novel assisted liquid−phase plasma electrolysis provides a new method for the preparation of composite electrode materials on the supercapacitors.

“…The non-electrode plasma electrolysis method has been developed by improving the electrolytic cathode in our laboratory [17][18][19][20][21]. We use an auxiliary electrode as the cathode to generate the plasma arc, and the fiber-deposited ceramic nanocoating passed through the cathodic plasma arc zone.…”

Section: Introductionmentioning

confidence: 99%

A Novel Electrolytic Plasma Spraying Preparation SiO2/SiC Coating on Carbon Fiber Fabric

et al. 2018

Coatings

Self Cite

A good quality of SiO2/SiC coating was successfully fabricated on carbon fiber fabric by a novel electrolytic plasma spraying method, where Na2SiO3·9H2O aqueous solution was used as an electrolyte. In this study, we discussed the effect of spraying distance on the coating. The microstructure and composition coating were characterized by scanning electron microscopy with energy-dispersive spectroscopy and XPS, respectively. An effective coating can be easily prepared within several tens of seconds through this approach by adjusting the spraying distance. Results show that the sample oxidation resistance temperature was up to 1000 °C while the spraying distance was 15 mm, and tensile strength increased by 73 MPa after heat treatment at 900 °C for 20 min. The study provides additional insights into the feasibility of modification of carbon fiber fabric. Meanwhile, this method can be expected to extend to the fabrication of other oxide coatings or the modification of the surfaces of other complicated and/or large-scale easily oxidized materials.