We report a flexible enzymatic biofuel cell based on electrochemically functionalized single-walled carbon nanotube (SWNT) electrodes. Comparative studies on the impact of the electrochemical functionalization of the SWNT electrodes on the device performance revealed a 40%–110% increase in power density as compared to that of the device with as-fabricated SWNT electrodes, with an observed maximum power density of 7.2μWcm⁻². This improvement in performance can be attributed to the increase in the amount of enzymes adsorbed on the SWNT surface and the enhanced electron transfer rate owing to the SWNT functionalization. Our findings can aid improve the performance of flexible and high-power-density biofuel cells.

我们报告了一种基于电化学功能化单壁碳纳米管 (SWNT) 电极的灵活酶促生物燃料电池。关于 SWNT 电极的电化学功能化对器件性能影响的比较研究表明，与具有制造的 SWNT 电极的器件相比，功率密度增加了 40%–110%，观察到的最大功率密度为 7.2 μ Wcm ^-2。这种性能的提高可归因于吸附在 SWNT 表面上的酶量的增加和由于 SWNT 功能化而提高的电子转移速率。我们的发现有助于提高灵活和高功率密度生物燃料电池的性能。