A High Power-Density, Mediator-Free, Microfluidic Biophotovoltaic Device for Cyanobacterial Cells.
A High Power-Density, Mediator-Free, Microfluidic Biophotovoltaic Device for Cyanobacterial Cells.
复制标题
用于蓝细菌细胞的高功率密度，无介体的微流体生物伏伏型装置。
DOI：
10.1002/aenm.201401299
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发表时间：
2015-01-21
影响因子：
27.8
通讯作者：
Knowles TP
中科院分区：
文献类型：
--
作者：
Bombelli P;Müller T;Herling TW;Howe CJ;Knowles TP
生物光伏发电已经成为一种很有前途的可再生能源发电技术，因为它依靠生物作为廉价的、自我修复的、现成的催化剂，从丰富的资源——阳光——中发电。然而，生物光伏电池的效率仍然明显低于通过合成材料实现的效率。在这里，设计了一个平台来利用小型化几何结构提供的大功率密度。为此，开发了一种软光刻方法，用于制造不需要膜或介质的微流体生物光伏器件。synnechocystis sp. PCC 6803电池注入并允许沉淀在阳极上，允许电池和无介质操作所需的电极之间的物理接近。在白光下，叶绿素浓度为100 μM时，功率密度超过100 mW m-2，这对于生物光伏器件来说是一个高值，无需额外的外部能量供应。
Biophotovoltaics has emerged as a promising technology for generating renewable energy because it relies on living organisms as inexpensive, self-repairing, and readily available catalysts to produce electricity from an abundant resource: sunlight. The efficiency of biophotovoltaic cells, however, has remained significantly lower than that achievable through synthetic materials. Here, a platform is devised to harness the large power densities afforded by miniaturized geometries. To this effect, a soft-lithography approach is developed for the fabrication of microfluidic biophotovoltaic devices that do not require membranes or mediators. Synechocystis sp. PCC 6803 cells are injected and allowed to settle on the anode, permitting the physical proximity between cells and electrode required for mediator-free operation. Power densities of above 100 mW m-2 are demonstrated for a chlorophyll concentration of 100 μM under white light, which is a high value for biophotovoltaic devices without extrinsic supply of additional energy.