scholarly journals Microalgae hydrogel-derived monolithicfree-standing air cathode for microbial fuel cells: Tailoring the macroporous structure for enhanced bioelectricity generation

2022 ◽  
Vol 153 ◽  
pp. 111773
Author(s):  
Jun Li ◽  
Yingying Dong ◽  
Linbin Hu ◽  
Yudong Zhang ◽  
Qian Fu ◽  
...  
RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32940-32946 ◽  
Author(s):  
Jiaxin Li ◽  
Baogang Zhang ◽  
Qinan Song ◽  
Alistair G. L. Borthwick

Improvement of microbial fuel cells (MFCs) via bioelectricity recovery is urgently needed in micro-energy devices nowadays.


2014 ◽  
Vol 70 (10) ◽  
pp. 1610-1616 ◽  
Author(s):  
Huanan Wu ◽  
Min Lu ◽  
Lin Guo ◽  
Leonard Guan Hong Bay ◽  
Zheng Zhang ◽  
...  

Polyelectrolyte–single wall carbon nanotube (SCNT) composites are prepared by a solution-based method and used as metal-free cathode catalysts for oxygen reduction reaction (ORR) in air-cathode microbial fuel cells (MFCs). In this study, two types of polyelectrolytes, polydiallyldimethylammonium chloride (PDDA) and poly[bis(2-chloroethyl)ether-alt-1,3-bis[3-(dimethylamino)propyl]urea] (PEPU) are applied to decorate the SCNTs and the resulting catalysts exhibit remarkable catalytic ability toward ORR in MFC applications. The enhanced catalytic ability could be attributed to the positively charged quaternary ammonium sites of polyelectrolytes, which increase the oxygen affinity of SCNTs and reduce activation energy in the oxygen reduction process. It is also found that PEPU–SCNT composite-based MFCs show efficient performance with maximum power density of 270.1 mW m−2, comparable to MFCs with the benchmark Pt/C catalyst (375.3 mW m−2), while PDDA–SCNT composite-based MFCs produce 188.9 mW m−2. These results indicate that PEPU–SCNT and PDDA–SCNT catalysts are promising candidates as metal-free cathode catalysts for ORR in MFCs and could facilitate MFC scaling up and commercialization.


2009 ◽  
Vol 24 (10) ◽  
pp. 3144-3147 ◽  
Author(s):  
Christian J. Sund ◽  
Michael S. Wong ◽  
James J. Sumner

2008 ◽  
Vol 78 (5) ◽  
pp. 873-880 ◽  
Author(s):  
Yujie Feng ◽  
Xin Wang ◽  
Bruce E. Logan ◽  
He Lee

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