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Coating evolution with an implantable biological battery

G Fontenier, M Mourot

    Biomedical Engineering
    |August 1, 1976
    PubMed
    Summary
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    A hybrid bioelectric battery for pacemakers experiences a voltage drop due to cathode coating. This coating, containing calcium and phosphorus, shifts the reduction process, impacting battery performance.

    Area of Science:

    • Biomedical Engineering
    • Materials Science
    • Electrochemistry

    Background:

    • Pacemakers require reliable power sources.
    • Hybrid bioelectric batteries offer a potential solution.
    • Cathode performance degradation is a key challenge.

    Purpose of the Study:

    • To investigate the performance and degradation mechanisms of a hybrid bioelectric battery for pacemaker applications.
    • To analyze the composition and formation of the cathode coating.
    • To understand the impact of cathode positioning on battery function.

    Main Methods:

    • Construction of a hybrid bioelectric battery using platinum cathode and magnesium anode.
    • Monitoring battery voltage and performance in situ.
    • Analysis of cathode coating using spectral and chemical methods.

    Related Experiment Videos

  • Investigating oxygen diffusion across the tissue layer.
  • Main Results:

    • The platinum cathode becomes coated with crystalline and connective tissue layers.
    • This coating induces a shift from an oxygen to a hydrogen reduction system at the cathode.
    • A significant voltage drop in the bioelectric battery is observed due to this system change.
    • High levels of calcium and phosphorus were detected in the cathode coating.
    • Cathode position influences coating formation.

    Conclusions:

    • The cathode coating is a critical factor in the voltage drop of the hybrid bioelectric battery.
    • Calcium and phosphorus are implicated in the formation of the cathode coating.
    • Understanding and mitigating cathode coating is essential for developing long-term pacemaker power sources.