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10 sie 2021 · The obtained Co(OH)2 @NC exhibits remarkable activity in terms of a lower overpotential of 330 mV@10 mA cm −2 for OER and a more positive half-wave potential (E 1/2 = 0.84 V) for ORR in alkaline medium, outperforming IrO 2 and Pt/C. Due to its superior bifunctional catalytic performance, Co(OH) 2 @NC catalyst is applied into a promising air ...
19 kwi 2021 · Ascribed to the dual active centers (CoO x nanoclusters and Co-N 4 macrocycles), the as-synthesized CoO x @Co-NC showed higher oxygen evolution efficiency than the benchmark RuO 2.
17 mar 2022 · Key mechanistic steps for selective CO(2) reduction over Cu into hydrocarbon versus oxygenated C2 products are identified by atomistic and microkinetic modeling.
strategy is developed for enhancing the ORR electrocatalytic performance of Co(OH) 2/NC, where NC is prepared from pyrolysis of carbon with melamine at 900 °C, then Co(OH) 2/NC is obtained from depositing Co(OH) 2 nanosheets on NC. The secondary-N-doping strategy is carried out by pyrolyzing Co(OH)
15 lut 2023 · Catalysts were calcined at target temperature 700 °C (500, 600, 800, 900 °C) at a heating rate of 5 °C·min −1 in N 2 for 2 h to acquire Co@S-NC-x (“x” represents the carbonization temperature).
6 paź 2022 · Highlights. A novel Ni (OH) 2 -based catalyst with ultralow Ni–Ni coordination is produced, exhibiting high activity (100 mA cm −2 at 1.39 V for methanol oxidation reactions) and outstanding stability in an industrial concentration electrolyte (over 500 mA cm −2 in 6 M KOH).
23 cze 2023 · Solution. According to Le Chatelier's principle, if pressure is increased, then the equilibrium shifts to the side with the fewer number of moles of gas. This particular reaction shows a total of 4 mol of gas as reactants and 2 mol of gas as products, so the reaction shifts toward the products side.
