Study on Glucose Biofuel Cells Using an Electrochemical Noise Device
Study on Glucose Biofuel Cells Using an Electrochemical Noise Device
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DOI：
10.1002/elan.200804220
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发表时间：
2008-07
期刊：
影响因子：
3
通讯作者：
Yueming Tan;Q. Xie;Jinhua Huang;Weisheng Duan;M. Ma;S. Yao
中科院分区：
文献类型：
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作者：
Yueming Tan;Q. Xie;Jinhua Huang;Weisheng Duan;M. Ma;S. Yao
首次利用电化学噪声（ECN）装置研究和表征葡萄糖/O2无膜生物燃料电池（BFC）和单极葡萄糖BFC。在葡萄糖/O2无膜生物燃料电池中，二茂铁（Fc）和葡萄糖氧化酶（GOD）分别固定在阳极为明胶膜的多壁碳纳米管（MWCNTs）/Au电极上，漆酶（Lac）和电子介体2，2 ′-偶氮双（3-乙基苯并噻唑啉-6-磺酸）二铵盐（ABTS）分别固定在阴极为聚吡咯膜的MWCNTs/Au电极上.该电池在含40 mmol/L葡萄糖的乙酸盐缓冲溶液（pH 5.0）中进行，最大功率密度为8 μW/cm 2，开路电压为0.29 V，短路电流密度为85 μA/cm 2。在含40 mmol/L葡萄糖的醋酸盐缓冲溶液（pH5.0）中，100 kΩ负载下连续放电15 h，电池电流保持初始值的78.9%。双通道石英晶体微天平技术显示，BFC的性能下降主要是由于固定在阴极的ABTS介体的泄漏。此外，在搅拌的磷酸盐缓冲溶液中，使用与葡萄糖/O2无膜BFC相同的阳极进行单极葡萄糖BFC（pH7.0，含40 mmol/L葡萄糖），碳阴极为Nafion膜隔离的酸性KMnO 4，最大功率密度为115 μW/cm 2，开路电压为1.24 V，短路电流密度为202 μA/cm ~ 2，上级葡萄糖/O_2无膜BFC。修饰的阳极与多壁碳纳米管的单极葡萄糖BFC的最大功率密度增加了1.8倍。强烈推荐ECN设备作为BFC研究的方便，实时和灵敏的技术。
An electrochemical noise (ECN) device was utilized for the first time to study and characterize a glucose/O2 membraneless biofuel cell (BFC) and a monopolar glucose BFC. In the glucose/O2 membraneless BFC, ferrocene (Fc) and glucose oxidase (GOD) were immobilized on a multiwalled carbon nanotubes (MWCNTs)/Au electrode with a gelatin film at the anode; and laccase (Lac) and an electron mediator, 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonate) diammonium salt (ABTS), were immobilized on a MWCNTs/Au electrode with polypyrrole at the cathode. This BFC was performed in a stirred acetate buffer solution (pH 5.0) containing 40 mmol/L glucose in air, with a maximum power density of 8 μW/cm2, an open-circuit cell voltage of 0.29 V, and a short-circuit current density of 85 μA/cm2, respectively. The cell current at the load of 100 kΩ retained 78.9% of the initial value after continuous discharging for 15 h in a stirred acetate buffer solution (pH 5.0) containing 40 mmol/L glucose in air. The performance decrease of the BFC resulted mainly from the leakage of the ABTS mediator immobilized at the cathode, as revealed by the two-channel quartz crystal microbalance technique. In addition, a monopolar glucose BFC was performed with the same anode as that in the glucose/O2 membraneless BFC in a stirred phosphate buffer solution (pH 7.0) containing 40 mmol/L glucose, and a carbon cathode in Nafion-membrane-isolated acidic KMnO4, with a maximum power density of 115 μW/cm2, an open-circuit cell voltage of 1.24 V, and a short-circuit current density of 202 μA/cm2, respectively, which are superior to those of the glucose/O2 membraneless BFC. A modification of the anode with MWCNTs for the monopolar glucose BFC increased the maximum power density by a factor of 1.8. The ECN device is highly recommended as a convenient, real-time and sensitive technique for BFC studies.