High-Power Formate/Dioxygen Biofuel Cell Based on Mediated Electron Transfer Type Bioelectrocatalysis
High-Power Formate/Dioxygen Biofuel Cell Based on Mediated Electron Transfer Type Bioelectrocatalysis
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DOI：
10.1021/acscatal.7b01918
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发表时间：
2017-08
期刊：
影响因子：
12.9
通讯作者：
Kento Sakai;Y. Kitazumi;O. Shirai;K. Takagi;K. Kano
中科院分区：
文献类型：
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作者：
Kento Sakai;Y. Kitazumi;O. Shirai;K. Takagi;K. Kano
本文报道了一种高功率的电子传递型甲酸盐（HCOO-）/氧气（O2）生物燃料电池。该电池使用Ketjen Black改性的防水碳布作为电极材料。生物阳极包括含钨甲酸脱氢酶和紫精官能化聚合物，而生物阴极包括胆红素氧化酶和2，2 ′-连氮双（3-乙基苯并噻唑啉-6-磺酸盐）。此外，气体扩散型系统用于生物阴极以实现高速O2供应。这些电极表现出一个大的电流密度为20 mA cm-2的静态稳定状态的HCOO-氧化和O2还原。最后，将这些电极耦合以构建没有隔板的HCOO-/O2生物燃料电池。该电池表现出最大功率密度为12 mW cm-2，在静态条件下的电池电压为0.78 V，开路电压为1.2 V。我们显示了巨大的潜力HCOO-生物燃料电池的燃料。
A high-power mediated electron transfer type formate (HCOO–)/dioxygen (O2) biofuel cell is reported herein. The cell utilizes a Ketjen Black modified waterproof carbon cloth as the electrode material. The bioanode comprises tungsten-containing formate dehydrogenase and a viologen-functionalized polymer, whereas the biocathode comprises bilirubin oxidase and 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate). In addition, a gas diffusion type system was employed for the biocathode to realize a high-speed O2 supply. These electrodes exhibited a large current density of 20 mA cm–2 in the quiescent steady state for both HCOO– oxidation and O2 reduction. Finally, these electrodes were coupled to construct an HCOO–/O2 biofuel cell without a separator. The cell exhibited a maximum power density of 12 mW cm–2 at a cell voltage of 0.78 V under quiescent conditions and an open-circuit voltage of 1.2 V. We show the great potential of HCOO– for the fuel of biofuel cells.