Abstract
The bioelectroactive fuel cells (BFC) or bioelectrochemical systems (BES) are regarded as a potent source for producing green and sustainable energy. The two major BFCs studied extensively are the enzymatic fuel cells and the microbial fuel cells. The main difference between them is the bioactive source that catalyzes the electrochemical reaction in the system. In recent times BES has gained tremendous publicity due to its unique technique for producing fuel, bioremediation, and many other applications. The BES differs from chemical fuel cells (CFC) in terms of catalysts, reaction mechanism, operational conditions, yield, and quantity of the product, etc. Although the BES has some limitations, it is considered to be advantageous over conventional CFC in several ways. However, the losses and the limitations present in BES are the main drawbacks. The present chapter highlights the working mechanism, operational condition, and other fundamental concepts of the BFC.
