MPA-11 Material Synthesis and Integrated Devices, Los Alamos National Laboratory, Los Alamos, NM, USA.
Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi, 2, 40126 Bologna, Italy.
Biosens Bioelectron. 2016 Dec 15;86:459-465. doi: 10.1016/j.bios.2016.06.084. Epub 2016 Jun 29.
For the first time, a paper based enzymatic fuel cell is used as self-recharged supercapacitor. In this supercapacitive enzymatic fuel cell (SC-EFC), the supercapacitive features of the electrodes are exploited to demonstrate high power output under pulse operation. Glucose dehydrogenase-based anode and bilirubin oxidase-based cathode were assembled to a quasi-2D capillary-driven microfluidic system. Capillary flow guarantees the continuous supply of glucose, cofactor and electrolytes to the anodic enzyme and the gas-diffusional cathode design provides the passive supply of oxygen to the catalytic layer of the electrode. The paper-based cell was self-recharged under rest and discharged by high current pulses up to 4mAcm(-2). The supercapacitive behavior and low equivalent series resistance of the cell permitted to achieve up to a maximum power of 0.87mWcm(-2) (10.6mW) for pulses of 0.01s at 4mAcm(-2). This operation mode allowed the system to achieve at least one order of magnitude higher current/power generation compared to the steady state operation.
首次将基于酶的纸质燃料电池用作自充电超级电容器。在这个超级电容型酶燃料电池 (SC-EFC) 中，利用电极的超级电容特性在脉冲操作下展示了高功率输出。基于葡萄糖脱氢酶的阳极和基于胆红素氧化酶的阴极被组装到准二维毛细驱动微流控系统中。毛细流动保证了葡萄糖、辅酶和电解质连续供应到阳极酶，而气体扩散阴极设计为电极的催化层提供了氧气的被动供应。基于纸张的电池在休息时进行自充电，并通过高达 4mAcm(-2)的大电流脉冲进行放电。电池的超级电容行为和低等效串联电阻允许在 4mAcm(-2)时以 0.01s 的脉冲达到 0.87mWcm(-2)（10.6mW）的最大功率。与稳态操作相比，这种操作模式允许系统实现至少一个数量级更高的电流/发电。
