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Power Generation versus Conventional Potentiostatic Operation of Prussian Blue Based (Bio)Sensors
Electroanalysis ( IF 2.7 ) Pub Date : 2017-12-12 , DOI: 10.1002/elan.201700671 Maria A. Komkova 1, 2 , Elena E. Karyakina 2 , Arkady A. Karyakin 2
Electroanalysis ( IF 2.7 ) Pub Date : 2017-12-12 , DOI: 10.1002/elan.201700671 Maria A. Komkova 1, 2 , Elena E. Karyakina 2 , Arkady A. Karyakin 2
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We report on Prussian Blue based (bio)sensors displaying advantageous analytical performance characteristics when operated both in conventional three‐electrode regime powered by potentiostat and in power generation mode. ‘Self‐powered’ sensors are commonly aimed to produce sufficient energy for signalling and, thus, being energetically autonomous. In order to generate maximum energy output, the electrodes with high potential difference are preferable. In contrast, we propose the systems with the lowest potential difference between the working and the counter electrodes. Short‐circuiting the Prussian Blue modified working and the Ag|AgCl reference electrode, working electrode potential is adjusted to 0.00 V without potentiostat. The efficiency of the (bio)sensors in power generation mode is achieved due to high catalytic activity of Prussian Blue at 0.00 V versus Ag|AgCl reference. Here we discuss the benefits of the Prussian Blue based (bio)sensors operated through power generation in a short‐circuit regime without potentiostat, including an order of magnitude decreased noise and simplified readout. The multimodality of the sensors would provide their versatile functionality for the electroanalysis and elaboration of miniature highly sensitive wearable devices.
中文翻译：
发电与基于普鲁士蓝的（生物）传感器的常规恒电位运行
我们报告了基于普鲁士蓝的（生物）传感器在由恒电位仪供电的常规三电极体制和发电模式下均显示出有利的分析性能特征。“自供电”传感器通常旨在产生足够的能量来发出信号，因此具有能量自主性。为了产生最大的能量输出，具有高电势差的电极是优选的。相反，我们提出了在工作电极和对电极之间具有最低电位差的系统。将普鲁士蓝修饰的工作电极和Ag | AgCl参比电极短路，可将工作电极电位调节至0.00 V，而无需使用恒电位仪。相对于Ag | AgCl参比，普鲁士蓝在0.00 V时具有较高的催化活性，从而实现了发电模式下（生物）传感器的效率。在这里，我们讨论了基于普鲁士蓝的生物传感器在无稳压器的短路状态下通过发电运行的好处，包括降低了一个数量级的噪声并简化了读数。传感器的多模态性将为微型高灵敏可穿戴设备的电分析和精细化提供通用功能。
更新日期：2017-12-12
中文翻译：
发电与基于普鲁士蓝的（生物）传感器的常规恒电位运行
我们报告了基于普鲁士蓝的（生物）传感器在由恒电位仪供电的常规三电极体制和发电模式下均显示出有利的分析性能特征。“自供电”传感器通常旨在产生足够的能量来发出信号，因此具有能量自主性。为了产生最大的能量输出，具有高电势差的电极是优选的。相反，我们提出了在工作电极和对电极之间具有最低电位差的系统。将普鲁士蓝修饰的工作电极和Ag | AgCl参比电极短路，可将工作电极电位调节至0.00 V，而无需使用恒电位仪。相对于Ag | AgCl参比，普鲁士蓝在0.00 V时具有较高的催化活性，从而实现了发电模式下（生物）传感器的效率。在这里，我们讨论了基于普鲁士蓝的生物传感器在无稳压器的短路状态下通过发电运行的好处，包括降低了一个数量级的噪声并简化了读数。传感器的多模态性将为微型高灵敏可穿戴设备的电分析和精细化提供通用功能。
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