“…FCs, which convert chemical energy into electrical energy, are environmentally friendly, long-lasting technology that does not harm nature. 19 Direct liquid-fed FCs (DLFCs), employing fluid fuels such as methanol, 67,68 glucose, 22,69 hydrazine, 70 ethanol, 11,71 glycerol, 72 ethylene glycol, 73,74 and formic acid (HCOOH, FA), 23,75 are preferable because DLFCs do not have the disadvantages of hydrogen FCs like employing a pure gas tank or fuel reforming. 76,77 FA is a preferred and promising fuel due to its advantages such as portable, low cost, clean liquid fuel.…”