What question did this study set out to answer?

This research aims to investigate the relationship between pH and electrochemical activity in Fe-containing Ni-based oxygen evolution catalysts.

November 6, 2015Journal of the American Chemical Society

In Situ Observation of Active Oxygen Species in Fe-Containing Ni-Based Oxygen Evolution Catalysts: The Effect of pH on Electrochemical Activity

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Authors

BTBartek J. TrześniewskiDelft University of Technology ODOscar Díaz‐MoralesNetherlands Organisation for Applied Scientific Research DVDavid A. VermaasKlabat University

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Implication

Randomized trial demonstrates the effect of pH on electrochemical activity in Ni-based oxygen evolution catalysts, indicating important implications for sustainable energy generation.

Key Points

This research aims to investigate the relationship between pH and electrochemical activity in Fe-containing Ni-based oxygen evolution catalysts.
Systematic characterization of nickel borate (Ni(Fe)-B(i)) and nickel oxyhydroxide (Ni(Fe)OOH) using Raman and X-ray absorption spectroscopy.
Measurements of electrochemical activity at varying pH levels, particularly focusing on pH 13.
Evaluation of the generation of negatively charged sites (active oxygen) impacting OER activity.
Both Ni-based OECs exhibit strong pH dependence in OER activity, driven by deprotonation processes.
Spectroscopic evidence confirms the link between generated active oxygen sites and enhanced OER activity.
UV-vis measurements indicate significant darkening of the catalysts correlating with nickel oxidation, which may limit efficiency.

Cite This Study

Trześniewski et al. (2015) studied this question.

synapsesocial.com/papers/69d9aa0434ded318bb68444f https://doi.org/10.1021/jacs.5b06814

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Implication

Randomized trial demonstrates the effect of pH on electrochemical activity in Ni-based oxygen evolution catalysts, indicating important implications for sustainable energy generation.

In Situ Observation of Active Oxygen Species in Fe-Containing Ni-Based Oxygen Evolution Catalysts: The Effect of pH on Electrochemical Activity

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Implication

Key Points

Cite This Study

In Situ Observation of Active Oxygen Species in Fe-Containing Ni-Based Oxygen Evolution Catalysts: The Effect of pH on Electrochemical Activity

Discussion

Member takes

Implication

Key Points

Cite This Study

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