Boosting current generation in microbial fuel cells by an order of magnitude by coating an ionic liquid polymer on carbon anodes
Boosting current generation in microbial fuel cells by an order of magnitude by coating an ionic liquid polymer on carbon anodes
复制标题
通过在碳阳极上涂覆离子液体聚合物，将微生物燃料电池的发电量提高一个数量级
DOI：
10.1016/j.bios.2017.01.028
复制
发表时间：
2017-05-15
影响因子：
12.6
通讯作者：
Xie, Qingji
中科院分区：
文献类型：
--
作者：
Yang, Lu;Deng, Wenfang;Xie, Qingji
微生物燃料电池（Microbial Fuel Cells，MFC）因其巨大的应用潜力而受到广泛关注，但其功率密度较低的缺点阻碍了其广泛的实际应用。在此，我们报告说，在MFC的电流生成可以提高一个数量级，简单地通过在碳布（CC）或碳毡（CF）上涂覆亲水性和带正电荷的离子液体聚合物（ILP）。ILP涂层不仅可以通过ILP与细菌细胞之间的静电相互作用增加细菌负载量，而且可以改善电极与希瓦氏菌细胞外膜上的细胞色素蛋白之间介导的细胞外电子传递。因此，配备有CF-ILP生物阳极的MFC的最大功率密度高达4400 +/-170 mWm（-2），这是迄今为止报道的最高值之一。这项工作展示了一种新的策略，大大提高了当前一代的MFC。
Microbial fuel cells (MFCs) have attracted great attentions due to their great application potentials, but the relatively low power densities of MFCs still hinder their widespread practical applications. Herein, we report that the current generation in MFCs can be boosted by an order of magnitude, simply by coating a hydrophilic and positively charged ionic liquid polymer (ILP) on carbon cloth (CC) or carbon felt (CF). The ILP coating not only can increase the bacterial loading capacity due to the electrostatic interactions between ILP and bacterial cells, but also can improve the mediated extracellular electron transfer between the electrode and the cytochrome proteins on the outer membrane of Shewanella putrefaciens cells. As a result, the maximum power density of a MFC equipped with the CF-ILP bioanode is as high as 4400 +/- 170 mWm(-2) , which is amongst the highest values reported to date. This work demonstrates a new strategy for greatly boosting the current generation in MFCs.