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18 maj 2021 · These results indicate Co/NC–N has a much better electrocatalytic ORR performance than Co(OH) 2 /NC, NC, NC–N and Co/NC–N–N, where the secondary-N-doping strategy and the synergistic effect of Co(OH) 2 supported on N-doped carbon are responsible for this enhanced performance.
10 sie 2021 · Co(OH) 2 @NC cathode delivers a maximal discharging current density nearly 300 mA cm −2 while Pt/C-IrO 2 only reaches 200 mA cm −2 at 0.5 V. The peak power density of Co(OH) 2 @NC (Fig. 5 (c)) is about 148 mW cm −2, significantly larger than the value of Pt/C-IrO 2 (106 mW cm −2).
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)
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17 mar 2022 · Electrochemical reduction of carbon dioxide (CO 2 R) into carbon-based chemicals and fuels offers an effective route to close the anthropogenic carbon cycle, store surplus renewable...
18 sie 2022 · Layered hydroxides, such as β-Co(OH) 2, are promising OER electrocatalysts; however, they tend to transform to the CoOOH phase during synthesis. In this work, we have evaluated the influence of the oxyhydroxide impurity phase on the OER activity of two-dimensional β-Co(OH) 2 .
20 sie 2024 · According to physical characterization, Fe 3+ and Co 2+ are incorporated into Ni (OH) 2 layers, where Fe doping leads to the formation of a regular flake structure, while Co doping facilitates surface electron transfer, enhancing electrocatalytic activity towards HER and OER.
