Abstract
Direct alcohol fuel cells (DAFCs) have attracted attention recently as an alternative energy source. Various improvements have been made to improve the efficiency of DAFCs as technology develops. This has increased expectations about the efficiency of DAFCs; however, further improvements need to be made to improve it. DAFCs are generally divided into five groups: direct methanol fuel cells (DMFCs), direct ethanol fuel cells (DEFCs), direct glycerol fuel cells (DGFCs), direct ethylene glycol fuel cells (DEGFCs), and direct isopropanol fuel cells (DIPAFCs). In this chapter, the use of monometallic materials in DAFCs and the problems are discussed in detail.
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