Effect of Hydrophilic Binder on Performance of Porous Carbon Electrode of Enzymatic Biofuel Cell

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Key Points

The aim is to assess how a hydrophilic binder, specifically polyvinyl alcohol (PVA), affects the structure and performance of porous carbon electrodes in enzymatic biofuel cells.
Produced porous carbon electrodes using varying amounts of polyvinyl alcohol (PVA) as a hydrophilic binder.
Measured particle size distribution in electrode slurry to analyze dispersion of carbon particles.
Utilized cyclic voltammetry to evaluate properties such as electrolyte wetting and reaction characteristics of the electrodes.
Adding more than 10 wt% PVA improves dispersion of carbon particles in the slurry.
Increasing PVA coverage on the electrode surface inhibits supply of reactants, affecting performance.
The optimal battery performance is achieved with 15 wt% PVA in lactate biofuel cells.

Evaluates performance of porous carbon electrodes with varying hydrophilic binder levels, suggesting optimal conditions for improved energy output.

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Nishida et al. (2026) studied this question.

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