Oxygen reduction reaction enhancement in microbial fuel cell cathode using cesium phosphomolybdate electrocatalyst

被引：15

作者：

Rezaei, Ali ^{[1
]}

Karami, Zeinab ^{[1
]}

Feli, Fatemeh ^{[1
]}

Aber, Soheil ^{[1
]}

机构：

[1] Univ Tabriz, Fac Chem, Dept Appl Chem, Res Lab Environm Protect Technol RLEPT, Tabriz, Iran

来源：

FUEL | 2023年 / 352卷

基金：

美国国家科学基金会;

关键词：

Bioelectricity; Modified cathode; Renewable energy; Polyoxometalate; Bioelectrochemistry; AIR-CATHODE; CATALYTIC-ACTIVITY; CARBON NANOFIBERS; FACILE SYNTHESIS; COBALT OXIDES; NANOCOMPOSITE; NANOPARTICLES; PERFORMANCES; INHIBITION; HYBRID;

D O I：

10.1016/j.fuel.2023.129040

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The sluggish oxygen reduction reaction (ORR) is a significant hurdle against microbial fuel cell (MFC) perfor-mance. Polyoxometalates are excellent candidates to address this challenge because they have the potential of improving ORR efficiency. Here, cesium phosphomolybdate was successfully synthesized through a facile solid-state method and then used as an ORR catalyst on a graphite cathode in an MFC with sodium acetate as the substrate in the anolyte. The CV analysis demonstrated that modified graphite has two ORR peaks at-0.25,-0.5 V vs Ag/AgCl and a higher current density than the bare graphite. The MFC equipped with the modified cathode displayed a maximum power density of 64.73 mW m- 2, higher than that obtained for bare graphite (42 mW m-2). COD removal efficiencies in MFCs with modified and bare graphite cathodes were 86.4% and 85%, respectively which are similar to or better than what is published in the literature. This study offers an efficient ORR catalyst in MFC applications helping in using organic wastewater as a fuel by converting the chemical energy into electricity.

引用

页数：9

共 44 条

[1] Improved dye degradation and simultaneous electricity generation in a photoelectrocatalytic microbial fuel cell equipped with AgBr/CuO hybrid photocathode [J].