Uniform Distribution of Pd on GO-C Catalysts for Enhancing the Performance of Air Cathode Microbial Fuel Cell
نویسندگان
چکیده
Metal, as a high-performance electrode catalyst, is research hotspot in the construction of microbial fuel cell (MFC). However, metal catalyst nanoparticles and their dispersed carriers are prone to aggregation, producing catalytic electrodes with inferior qualities. In this study, Pd uniformly on graphene framework supported by carbon black form nanocomposite catalysts (Pd/GO-C catalysts). The effect palladium loading amount performance air cathode was further studied. optimized afforded reduced resistance improved accessibility particles for ORR. maximum current output 0.250 (mg/cm2) MFC 1645 mA/m2, which 4.2-fold higher than that paper cathode. Overall, our findings provide novel protocol preparation high-efficient ORR MFCs.
منابع مشابه
Air humidity and water pressure effects on the performance of air-cathode microbial fuel cell cathodes
To better understand how air cathode performance is affected by air humidification, microbial fuel cells were operated under different humidity conditions or water pressure conditions. Maximum power density decreased from 1130 30 mW m 2 with dry air to 980 80 mW m 2 with water-saturated air. When the cathode was exposed to higher water pressures by placing the cathode in a horizontal position, ...
متن کاملCore-shell Au-Pd nanoparticles as cathode catalysts for microbial fuel cell applications
Bimetallic nanoparticles with core-shell structures usually display enhanced catalytic properties due to the lattice strain created between the core and shell regions. In this study, we demonstrate the application of bimetallic Au-Pd nanoparticles with an Au core and a thin Pd shell as cathode catalysts in microbial fuel cells, which represent a promising technology for wastewater treatment, wh...
متن کاملNanostructured Pt/MnO2 Catalysts and Their Performance for Oxygen Reduction Reaction in Air Cathode Microbial Fuel Cell
Microbial fuel cells (MFCs) represent a promising technology for simultaneous bioelectricity generation and wastewater treatment. Catalysts are significant portions of the cost of microbial fuel cell cathodes. Many materials have been tested as aqueous cathodes, but air-cathodes are needed to avoid energy demands for water aeration. The sluggish oxygen reduction reaction (ORR) rate at air catho...
متن کاملA Single-Chamber Microbial Fuel Cell without an Air Cathode
Microbial fuel cells (MFCs) represent a novel technology for wastewater treatment with electricity production. Electricity generation with simultaneous nitrate reduction in a single-chamber MFC without air cathode was studied, using glucose (1 mM) as the carbon source and nitrate (1 mM) as the final electron acceptor employed by Bacillus subtilis under anaerobic conditions. Increasing current a...
متن کاملFull cell simulation and the evaluation of the buffer system on air-cathode microbial fuel cell
This paper presents a computational model of a single chamber, air-cathode MFC. The model considers losses due to mass transport, as well as biological and electrochemical reactions, in both the anode and cathode half-cells. Computational fluid dynamics and Monod-Nernst analysis are incorporated into the reactions for the anode biofilm and cathode Pt catalyst and biofilm. The integrated model p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Catalysts
سال: 2021
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal11080888