Functional Nanomaterial-Modified Anodes in Microbial Fuel Cells: Advances and Perspectives

Area of Science:

• Environmental Science
• Electrochemistry
• Materials Science

Background:

• Microbial fuel cells (MFCs) offer a sustainable method for wastewater treatment and simultaneous electricity generation.
• Enhancing MFC performance relies on optimizing anode materials for better bacterial adhesion and extracellular electron transfer (EET).

Purpose of the Study:

• This review syntheses recent advances in anode modification materials for MFCs.
• It explores the mechanisms of microbial EET at the bacteria-electrode interface.

Main Methods:

• The review analyzes anode modification strategies, including surface modification, hybrid biofilm construction, and single-bacterial surface modification.
• It focuses on the integration of exoelectrogens with nanomaterials.

Main Results:

• Anode modification with advanced nanomaterials significantly improves MFC efficiency.
• Understanding microbial EET mechanisms is crucial for overcoming performance limitations.

Conclusions:

• Rational design of EET-related nanomaterials can enhance MFC performance.
• These advancements pave the way for the widespread application of microbial electrochemical systems.