A fuel cell's operation does not involve combustion and produces no pollution, and the efficiency of energy conversion is several times higher than in conventional cells. "Hydrogen energy" has been a hot field of research internationally for more than a decade.
它的主要燃料是大自然中遍佈的氫氣，它不經燃燒過程，沒有污染問題，而且能量轉換的效率，較一般電池高出好幾倍，早在十幾年前，「氫能」就已在國際間引發研究熱潮。