Abstract Electrode supports play a significant role in the assembly of high-performance biofuel cells (BFCs) since they connect the active center of biocatalysts and the charge collectors directly. In this manuscript, novel nanostructured multi-walled carbon nanotube (MWCNT) films were fabricated by electrophoretic deposition (EPD-MWCNT films) as electrode supports for high-performance BFCs. Flavin adenine dinucleotide-dependent glucose dehydrogenase and laccase were modified on EPD-MWCNT films to fabricate the bioanodes and biocathodes, respectively, with Os-complexes as mediators. For comparison, drop-casted MWCNT films or buckypapers have been prepared and adopted for the construction of BFCs with the same biocatalysts. EPD-MWCNT films which have vegetable sponge-like networks should be the optimal electrode supports for glucose/O 2 BFCs with higher power density. The EPD-MWCNT films based glucose/O 2 BFC showed a high maximum power density of 0.43 ± 0.03 mW cm −2 and open circuit voltage of 0.59 V, which is significantly superior to those values of the BFCs based on drop-cast MWCNT films or buckypapers, contributing to the electrode supports of EPD-MWCNT films with vegetable sponge-like nanostructure. Moreover, the BFC retained 56% of its original power density even after continuous operation for 7 days. Our findings would open an avenue for the development of more efficient BFCs with EPD-MWCNT films as the electrode supports.

中文翻译：

---

基于电泳沉积多壁碳纳米管薄膜的高性能葡萄糖/氧气生物燃料电池

摘要 电极载体在高性能生物燃料电池（BFCs）的组装中发挥着重要作用，因为它们直接连接生物催化剂的活性中心和电荷收集器。在这份手稿中，新型纳米结构多壁碳纳米管 (MWCNT) 薄膜是通过电泳沉积（EPD-MWCNT 薄膜）制造的，作为高性能 BFC 的电极支撑。黄素腺嘌呤二核苷酸依赖性葡萄糖脱氢酶和漆酶在 EPD-MWCNT 薄膜上进行修饰，分别以 Os 配合物作为介质制备生物阳极和生物阴极。为了进行比较，已经制备并采用滴铸 MWCNT 薄膜或巴克纸来构建具有相同生物催化剂的 BFC。具有植物海绵状网络的 EPD-MWCNT 薄膜应该是具有更高功率密度的葡萄糖/O 2 BFC 的最佳电极支撑。基于葡萄糖/O 2 BFC 的 EPD-MWCNT 薄膜显示出 0.43 ± 0.03 mW cm -2 的高最大功率密度和 0.59 V 的开路电压，这显着优于基于滴铸 MWCNT 薄膜的 BFC 的值或巴基纸，有助于具有植物海绵状纳米结构的 EPD-MWCNT 薄膜的电极支撑。此外，即使连续运行 7 天，BFC 仍保持其原始功率密度的 56%。我们的发现将为开发以 EPD-MWCNT 薄膜作为电极支撑的更高效 BFC 开辟一条途径。03 mW cm -2 和 0.59 V 的开路电压，显着优于基于滴铸多壁碳纳米管薄膜或巴克纸的 BFC 的值，有助于具有植物海绵状纳米结构的 EPD-多壁碳纳米管薄膜的电极支撑。此外，即使连续运行 7 天，BFC 仍保持其原始功率密度的 56%。我们的发现将为开发以 EPD-MWCNT 薄膜作为电极支撑的更高效 BFC 开辟一条途径。03 mW cm -2 和 0.59 V 的开路电压，显着优于基于滴铸多壁碳纳米管薄膜或巴克纸的 BFC 的值，有助于具有植物海绵状纳米结构的 EPD-多壁碳纳米管薄膜的电极支撑。此外，即使连续运行 7 天，BFC 仍保持其原始功率密度的 56%。我们的发现将为开发以 EPD-MWCNT 薄膜作为电极支撑的更高效 BFC 开辟一条途径。