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Showing 1–5 of 5 results
Advanced filters: Author: Michaela Burke Stevens Clear advanced filters

  • Highly performing fuel cell catalysts tested at the fundamental level rarely translate well to full devices, in part due complicated ionomer-catalyst interfaces at the heart of devices, where the electrochemical reactions occur. Here the authors demonstrate ionomerless-thin-film-deposited cathodes that have comparable activity trends across fundamental tests and fuel cells.

    • John C. Douglin
    • José A. Zamora Zeledón
    • Dario R. Dekel
    Research
    Nature Energy
    Volume: 8, P: 1262-1272

  • Gas bubble accumulation at interfaces is a barrier to achieving more efficient electrochemical devices. A clever model system to understand bubble formation during electrochemical hydrogen evolution now reveals similarities between the forces at play during their detachment from the catalyst surface and those involved in wine climbing up a glass.

    • Gaurav Ashish Kamat
    • Michaela Burke Stevens
    News & Views
    Nature Chemistry
    Volume: 15, P: 1488-1489

  • Electrocatalyst development is key to improving the performance and viability of many electrochemical energy technologies. Here, the authors design Ag-Pd alloys with specifically tuned electronic structures to have enhanced oxygen reduction electrocatalysis and decreased precious metal content.

    • José A. Zamora Zeledón
    • Michaela Burke Stevens
    • Thomas F. Jaramillo
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • Microenvironment engineering through electrolyte optimization is a promising approach to mitigate catalyst poisoning effects in electrochemical systems, but the role of electrolyte anions is not fully understood. Here, in a combined experimental-theoretical evaluation, the authors study the effects of different acidic electrolytes (pH 1) on platinum for hydrogen (HER/HOR) and oxygen electrocatalysis (ORR/OER), finding that oxygen reduction performance can be improved 4-fold using nitric rather than sulfuric acid.

    • Gaurav Ashish Kamat
    • José A. Zamora Zeledón
    • Thomas F. Jaramillo
    ResearchOpen Access
    Communications Chemistry
    Volume: 5, P: 1-10