Figure 1. Effect of the initial Pt/C aggregate state controlled by pre-mixing on subsequent catalyst-ink formation and electrochemical Pt accessibility. (IMAGE)
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Figure 1. Effect of the initial Pt/C aggregate state controlled by pre-mixing on subsequent catalyst-ink formation and electrochemical Pt accessibility.
Moderate pre-mixing produces smaller and relatively uniform initial Pt/C aggregates, facilitating subsequent dispersion and resulting in higher electrochemical Pt accessibility. Excessive pre-mixing promotes the formation of structures that are more resistant to breakup during subsequent mixing.
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© Kanazawa University
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