High‐efficiency Nitric Acid‐PPy/AQDS Coupling Treated Bioanodes Based Microbial Fuel Cell

Abstract

The properties of anode material are crucial for high performances in microbial fuel cells (MFCs). Herein, we report a biocompatible, conductive, and electron transfer efficient cooperative processing anode, which is fabricated by electrodepositing polypyrrole/anthraquinone‐2, 6‐disulphonic disodium salt (PPy/AQDS) onto nitric acid‐soaked carbon felt. Results showed that the cooperative processing anode outperformed the pristine one in biomass, electrical conductivity, and exchange current density with better performance between 2.4 and 3.3 times. The maximum power density (1060.3 mW m−2) of the MFC equipped with the properties hybridized anode delivered a 2.2‐fold increase over that of the control and thus has great potential to be used as an anode for high‐power MFC. Further investigation revealed that the contributions of biocompatibility (BCB), electrical conductivity (EC), and electron transfer efficiency (ETE) to the performance of carbon felt anodes appeared as cumulative effect rather than summing effect. We propose combined treatment of BCB with EC and ETE to form a properties‐hybridized anode based on thoroughly analyzing the feasibility and effectiveness, and discussed future efforts to be made for realizing more extraordinary high‐performance cooperative processing anodes. This work may also provide a novel approach for the development of other types of anode for high‐performance MFC through combined treating the BCB with EC and ETE simultaneously.

Biomass-derived 3D hydrogel bioanode for improved EET processes and COD removal efficiency

“…Additionally, the power density of the hydrogels, was higher than previously reported (Fig. 6c), such as PPy/AQDS [37], PPy-CS-CNT [38], CDs/PPy-NW [39], PANI-MXene [17]. These results indicate that the carbon cloth modi ed by PPy-CMC-MXene hydrogel can improve the voltage output of MFC.…”

Cobalt‐based Catalysts Modified Cathode for Enhancing Bioelectricity Generation and Wastewater Treatment in Air‐breathing Cathode Microbial Fuel Cells

“…Microbial fuel cell (MFC) is an emerging and eco‐friendly bio‐electrochemical technology to harvest bioenergy from wastewater using microorganism as biocatalyst . However, the scale‐up of MFC is seriously restricted by the sluggish oxygen reduction reaction (ORR) on cathode .…”