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The mass production of non-precious metal catalysts (NPMCs) with high catalytic performance for oxygen reduction reaction (ORR) is highly desirable for promoting the commercialization of proton membrane fuel cells. In this work, one-pot synthesized covalent porphyrin polymers (CPP) incorporated with iron chlorides (Fe-CPP) were converted into N-doped porous Fe3C@carbons (Fe3C@C) at a scale of over...
Carbon was deposited on a mild steel cathode during electrolysis in the molten mixture of Li 2 CO 3 and K 2 CO 3 (mole ratio: 62:38) under CO 2 or mixed N 2 and CO 2 atmospheres at 3.0–5.0V and 540–700°C. In a three-electrode cell, cyclic voltammetry was applied on a platinum working electrode to study the reduction and deposition processes...
Microbial corrosion limits the use of metallic structures in a variety of technological processes and applications. Here, we report the first demonstration of graphene as a passive layer that retards microbially-induced galvanic corrosion (MIC) of metals for extended periods of time (∼2700h). The effectiveness of the MIC-resistant graphene coating was evaluated under realistic operating conditions...
The production of carbon nanotubes (CNTs) by the electrolysis of molten NaCl was investigated by examining the effect of electrolysis duration, current density and voltage. It was found that as the electrolysis was run for longer periods the cathode eroded, changing the current density and consequently preventing nanotube production. The electrolysis was also inhibited by the anode effect and the...
Using a conventional laboratory diffractometer, small angle X-ray scattering (SAXS) was used to determine the average platinum particle size in samples of carbon with a range of platinum loadings. The results obtained were compared with those obtained from wide-angle X-ray diffraction (WAXS) studies. SAXS was more effective than WAXS for determining the average platinum particle size in samples where...
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