Use of Chemical and Electrochemical Treatment Methods in the Liquid-Phase Modification of Carbon Fiber and Fiberglass Surfaces in the Production of Construction Materials: A Review

Сорокин, А. Е.; Петрова, Г. Н.; Donskikh, I. N.

doi:10.1134/s004057952005022x

Cited by 4 publications

(2 citation statements)

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“…Activated carbon electrodes have been applied in many fields and reported in several reviews as electrocatalysts for the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) and aqueous flow batteries and electrochemical storage . The electrochemical activation, as a simple and effective method, also has been widely applied to treat commercial carbon fiber materials. , It has been reported that acids (HNO 3 , H 2 SO 4 /HNO 3 mixture, and H 3 PO 4 ), − alkali (NaOH and KOH), , water-soluble salts (Na 2 SO 4 , K 2 CO 3 ), and other reagents , are used as electrolytes for electrochemical modifications.…”

Section: Introductionmentioning

confidence: 99%

“…14 The electrochemical activation, as a simple and effective method, also has been widely applied to treat commercial carbon fiber materials. 14,15 It has been reported that acids (HNO 3 , H 2 SO 4 /HNO 3 mixture, and H 3 PO 4 ), 16−18 alkali (NaOH and KOH), 19,20 water-soluble salts (Na 2 SO 4 , K 2 CO 3 ), and other reagents 21,22 are used as electrolytes for electrochemical modifications.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Electrochemical Properties of Carbon Paper as Cathodes for Microfluidic Fuel Cells by the Electrochemical Activation in Different Solutions

et al. 2021

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Membraneless microfluidic fuel cells (MFCs) have garnered tremendous interest as micropower devices, which exploit the colaminar nature of two aqueous electrolytes to separate the anode and cathode and avoid the membrane usually used in a fuel cell. Our previous research shows that the performance of FeCl3-based MFCs with catalyst-free cathodes is mainly limited by the cathode. To improve the power output of these MFCs, we activated the carbon paper cathode by an electrochemical method in the three solutions (Na2SO4, NaOH, and H2SO4) to improve the electrochemical characteristics of the carbon paper cathode. The surface functionalities and defects, reduction activation of iron ions as the oxidant, cathode resistance, and performance of FeCl3-based MFCs were measured and compared. Our work shows that the electrochemical activation of the carbon paper in different solutions is a simple and effective method to enhance the electrochemical characteristics of the carbon paper cathode and improve the performance of the FeCl3-based MFC. Also, the MFC with the carbon paper cathode activated in the H2SO4 solution reaches the optimum performance: 235.6 mW cm–3 in volumetric power density and 1063.33 mA cm–3 in volumetric limiting current density, which are 1.58 and 1.52 times as much as that of a MFC with an untreated carbon paper cathode, respectively. This best performance can be attributed to the cathode activated in the H2SO4 solution with the largest number of oxygen-containing functional groups, the largest electrochemical active surface area, strongest reduction of iron ions, and least resistance of the cathode.

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