Electrochemistry of carbonaceous materials

Tomat, Renato; Salmaso, R.; Zecchin, Sandro

doi:10.1016/0016-2361(92)90039-q

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…Besides, the collision between the electrode and the coal slurry is enhanced. 58,59 Performance of the GF electrode for CAWE.-Water electrolysis at Pt∥IrO 2 -RuO 2 /Ti and coal electrolysis at Pt∥GF were compared to evaluate the performance of the GF electrode for the CAWE, as shown in Fig. 6.…”

Section: Resultsmentioning

confidence: 99%

A Low-Cost Metal-Free Graphite Felt Electrode for Coal-Assisted Water Electrolysis for Hydrogen Production

Chen

Zhou

Ding

et al. 2022

J. Electrochem. Soc.

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Cheap, active, and stable electrodes are vital for coal-assisted water electrolysis for hydrogen production (CAWE). Conventional CAWE uses relatively costly metal-based anodes such as Pt, SnO2/Ti, and IrO2-RuO2/Ti. Previous work confirms that metal-free carbon anodes, however, demonstrate excellent performance in biomass-assisted water electrolysis. Inspired by this, we examined the feasibility and effectiveness of low-cost graphite felt (GF) anodes in CAWE. The results show that GF is a promising candidate for CAWE. Compared to Pt, SnO2/Ti, Pt/Ti, IrO2-RuO2/Ti, and IrO2-Ta2O5/Ti, GF has higher reactivity for the CAWE. The current density is higher than 5 mA/cm2 when the cell voltage is 1 V for coal electrolysis at Pt‖GF. When the current density is 1 mA/cm2, 5 mA/cm2, 10 mA/cm2, and 50 mA/cm2, the cell voltage of water electrolysis at Pt‖IrO2-RuO2/Ti is 1.84 times, 1.64 times, 1.50 times and 1.13 times that of coal electrolysis at Pt‖GF, respectively. Compared with precious metal-based electrodes, GF electrodes used for CAWEs can greatly reduce the cost. Therefore, this study provides important guidance for the industrial development of CAWE.

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Section: Resultsmentioning

confidence: 99%

A Low-Cost Metal-Free Graphite Felt Electrode for Coal-Assisted Water Electrolysis for Hydrogen Production

Chen

Zhou

Ding

et al. 2022

J. Electrochem. Soc.

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“…The electrolysis of coal and graphite under galvanostatic conditions was studied on carbon fiber electrodes prepared by plating of noble metals (Pt, Rh, Pt À Rh, Pt À Ir, Pt À Ir À Rh) on carbon fibers [6]. Currentpotential curves of suspended subbituminous coal in 85% H 3 PO 4 were measured on a platinum electrode [7]. The subbituminous coal slurries were oxidized in 85% H 3 ) and the effects of metal ion concentration, coal content of slurry, coal particle size and temperature were examined [7,8].…”

Section: Introductionmentioning

confidence: 99%

Coal as a New Carbon Paste Electrode Modifier with Sorption Properties

Navrátilová

2009

Electroanalysis

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A new type of carbon paste electrode modified with subbituminous and bituminous coal is presented. The operability of the coal carbon paste electrode with respect to the working potential window attainable was tested in various electrolytes. Cyclic voltammetry of the reference redox system [Fe(CN) 6 ] 3À/4À was performed to evaluate electron transfer kinetics. Open-circuit sorption of Cd(II), Pb(II), and Cu(II) with subsequent anodic stripping voltammetry was used to pilot coal sorption ability. The coal modified carbon paste electrode was also examined as a support for mercury film deposition and anodic stripping voltammetry of metals.

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