Highly corrosion resistant platinum–niobium oxide–carbon nanotube electrodes for the oxygen reduction in PEM fuel cells

2012 ◽  
Vol 5 (3) ◽  
pp. 6156 ◽  
Author(s):  
Li Zhang ◽  
Liya Wang ◽  
Chris M. B. Holt ◽  
Beniamin Zahiri ◽  
Zhi Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Oxygen Reduction ◽  
Niobium Oxide ◽  
Pem Fuel Cells ◽  
Corrosion Resistant

Polyelectrolyte–single wall carbon nanotube composite as an effective cathode catalyst for air-cathode microbial fuel cells

2014 ◽  
Vol 70 (10) ◽  
pp. 1610-1616 ◽  
Author(s):  
Huanan Wu ◽  
Min Lu ◽  
Lin Guo ◽  
Leonard Guan Hong Bay ◽  
Zheng Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Reduction Process ◽  
Air Cathode ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Cathode Catalysts ◽  
Metal Free

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.

Advanced Atomically Dispersed Metal–Nitrogen–Carbon Catalysts Toward Cathodic Oxygen Reduction in PEM Fuel Cells

2021 ◽  
Vol 11 (37) ◽  
pp. 2101222 ◽  
Author(s):  
Yijie Deng ◽  
Junming Luo ◽  
Bin Chi ◽  
Haibo Tang ◽  
Jing Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
Pem Fuel Cells ◽  
Carbon Catalysts

Ultrasound-assisted synthesis of Pt–Co/C bimetallic alloys for oxygen reduction in PEM fuel cells

2018 ◽  
Vol 2 (7) ◽  
pp. 1491-1499 ◽  
Author(s):  
Rajesh Kumar Polagani ◽  
Prashant L. Suryawanshi ◽  
Sarang P. Gumfekar ◽  
Shirish H. Sonawane ◽  
Muthupandian Ashokkumar
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Pem Fuel Cells ◽  
Bimetallic Alloys ◽  
Polarization Study ◽  
Ultrasound Assisted

The polarization study revealed the information on the electrocatalytic activity of Pt–Co/C cathodes in PEMFCs.

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