Carbon supported nickel-phthalocyanine/MnOx as novel cathode catalyst for microbial fuel cell application. (7th September 2017)

• Record Type: Journal Article
• Authors: Tiwari, B.R.; Noori, Md. T.; Ghangrekar, M.M.
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 36(2017)
• Page Start: 23085
• Page End: 23094
• Publication Date: 2017-09-07
• Subjects: Cathode catalyst -- Coulombic efficiency -- Microbial fuel cells -- Oxygen reduction reaction -- Phthalocyanine; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.07.201
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Performance of microbial fuel cells (MFCs) with carbon supported nickel phthalocyanine (NiPc)MnOx composite (MFC-1) and nickel phthalocyanine (MFC-2) incorporated cathode was compared with a control MFC with non-catalysed carbon felt as cathode (MFC-3) and MFC-4 having Pt on cathode (as benchmark reference control). MFC-1 exhibited power density of 8.02 Wm −3, which was four folds higher than control MFC-3 (2.08 Wm −3 ) and 1.14 times higher than MFC-2 (6.97 Wm −3 ). Coulombic efficiency of 30.3% obtained in MFC-1 was almost double of that obtained for control MFC-3 and it was 5.4% lesser as compared to MFC-4 (35.7%). Linear sweep voltammetry study of cathodes revealed that NiPc-MnOx could enhance the electrocatalytic activity of oxygen reduction reaction (ORR) in comparison to control cathode. However, the power recovery from MFC-1 was noted little lower than what obtained from MFC-4 (10.58 Wm −3 ), however the cost normalized power was two times higher than Pt catalyst on cathode. Thus, NiPc-MnOx based catalyst developed in this study has potential to enhance ORR in cathodes of MFCs in order to harvest more power. Highlights: NiPc-MnOx was tested as cathode catalyst in MFC. Doping of MnOx on NiPc skeleton improved the electrochemical property. Power recovery from MFC with NiPc-MnOx was four folds higher than control MFC. Two fold increment in CE in MFC with NiPc-MnOx catalyst as compared to control MFC.