Different cathode configurations with carbon paper (CP) and carbon cloth (CC) gas diffusion layer (GDL) are combined with Nafion® 115 for GOx enzyme fuel cells. Catalyst-coated Nafion membrane (without a GDL) has resulted with highest impedance and lowest polarization response. Hot pressing of cathode gas diffusion electrode (GDE) onto the Nafion or physical placement onto the alternative chitosan membrane has reduced interface resistance 10 times compared with no-GDL case. The best performance for the Nafion membrane is 2.1 mA cm⁻² current density with hot-pressed CC-GDE. Smallest high-frequency electrolyte (0.55 ohm) and charge transfer resistances (0.15 ohm) were measured with physically placed CC-GDE on the alternative chitosan membrane resulting in maximum short current density of 3 mA cm⁻² with a 4-cm² single enzyme fuel cell.

中文翻译：

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阴极气体扩散层类型及膜电极组件制备对固定化葡萄糖氧化酶基酶燃料电池性能的影响

具有碳纸 (CP) 和碳布 (CC) 气体扩散层 (GDL) 的不同阴极配置与 Nafion® 115 结合用于 GOx 酶燃料电池。催化剂涂层的 Nafion 膜（无 GDL）具有最高的阻抗和最低的极化响应。与无 GDL 的情况相比，将阴极气体扩散电极 (GDE) 热压到 Nafion 上或物理放置到替代壳聚糖膜上可将界面电阻降低 10 倍。Nafion 膜的最佳性能是使用热压 CC-GDE 的2.1 mA cm ^-2电流密度。最小的高频电解液 (0.55 ohm) 和电荷转移电阻 (0.15 ohm) 是通过物理放置的 CC-GDE 在替代壳聚糖膜上测量的，导致最大短路电流密度为 3 mA cm ^-24-cm ²单酶燃料电池。