A micro-scale microbial fule cell (MFC) having ultramicroelectrode (UME) anode

2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS 2013) : Taipei, Taiwan, 20-24 January 2013. IEEE International Conference on Micro Electro Mechanical Systems (26th : 2013 : Taipei, Taiwan) Pub Date : 2013-03-07 DOI:10.1109/MEMSYS.2013.6474381

Hao Ren, S. Rangaswami, Hyung-Sool Lee, Junseok Chae

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引用次数: 4

Abstract

We report a micro-scale microbial fuel cell (MFC), having an ultramicroelectrode (UME) as its anode, aiming for a miniaturized energy converter of carbon-neutral renewable energy. Micro-scale MFCs have been studied for many years, yet the power density of them is orders of magnitude lower than that of macro-scale counterparts. In order to address this limitation, this work utilizes a ring-shape UME, which aims to enhance the diffusion of ions at the vicinity of micro-organisms, forming their biofilm on the UME. Areal and volumetric power densities of 7.72 W/m2 and 3,658 W/m3 are obtained, respectively; both are the highest ever reported among all MFCs to date, regardless of their sizes. In addition to the power densities, coulombic efficiency (CE) of 70 % and energy efficiencies of 20 % are marked, which makes the micro-scale MFC an attractive alternative in existing energy conversion portfolio.

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一种具有超微电极阳极的微型微生物燃料电池(MFC)

我们报道了一种微型微生物燃料电池(MFC)，以超微电极(UME)为阳极，旨在实现碳中性可再生能源的小型化能量转换器。微尺度mfc研究已有多年，但其功率密度比宏观尺度mfc低几个数量级。为了解决这一限制，本研究利用了环形UME，其目的是增强离子在微生物附近的扩散，在UME上形成生物膜。面积和体积功率密度分别为7.72 W/m2和3,658 W/m3;无论其规模如何，这两项都是迄今为止所有mfc中报告的最高水平。除了功率密度外，库仑效率(CE)达到70%，能量效率达到20%，这使得微型MFC在现有的能量转换组合中成为一个有吸引力的替代方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2013 IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS 2013) : Taipei, Taiwan, 20-24 January 2013. IEEE International Conference on Micro Electro Mechanical Systems (26th : 2013 : Taipei, Taiwan)

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