Size-controlled, hollow and hierarchically porous Co2Ni2 alloy nanocubes for efficient oxygen reduction in microbial fuel cells

2022 ◽  
Author(s):  
Wenyi Wang ◽  
Xueqin Wang ◽  
Yuanyuan Wang ◽  
Bolong Jiang ◽  
Hua Song
Keyword(s):  
Fuel Cells ◽  
Porous Materials ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Hollow Structure ◽  
Hierarchically Porous ◽  
Highly Active ◽  
Hierarchically Porous Materials ◽  
Size Controlled ◽  
Huge Challenge

Uniform, hollow-structure and hierarchically porous materials often produce surprisingly outstanding electrocatalytic performance. Besides, fabrication of highly active and stable non-noble metal-based alloys remains a huge challenge. Herein, a facile synthetic...

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.

Graphite/MnO2and MoS2Composites Used as Catalysts in the Oxygen Reduction Cathode of Microbial Fuel Cells

2017 ◽  
Vol 164 (14) ◽  
pp. E519-E524 ◽  
Author(s):  
Bolong Jiang ◽  
Thorben Muddemann ◽  
Ulrich Kunz ◽  
Leandro Gomes Silva e Silva ◽  
Hinnerk Bormann ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells

Hierarchically porous materials prepared by selective laser sintering

2017 ◽  
Vol 135 ◽  
pp. 62-68 ◽  
Author(s):  
Mengxue Yan ◽  
Xiaoyong Tian ◽  
Gang Peng ◽  
Yi Cao ◽  
Dichen Li
Keyword(s):  
Porous Materials ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Hierarchically Porous ◽  
Hierarchically Porous Materials
Sign in / Sign up

Export Citation Format

Share Document