n the past 150 years, the United States has become increasingly dependent on fossil fuel combustion for transportation, power generation, and industrial processes. But combustion of fossil fuels has an environmental price, including air and water pollution and greenhouse gas emissions.
Today, the Nation is laying the foundation for a new energy platform— a platform that uses hydrogen as an energy carrier to power fuel cells and other systems. Unlike traditional combustion systems, hydrogen systems produce energy using a battery-like electrochemical process. When used to power vehicles or generate electricity, fuel cells emit virtually no pollution or greenhouse gases.
However, serious technical challenges must be addressed to achieve the

在過去150 年, 美國變得越來越依賴于礦物燃料燃燒為運(yùn)輸、發(fā)電, 和工業(yè)生產(chǎn)方法。但礦物燃料的燃燒有一個環(huán)境價格, 包括空氣和水污染和溫室氣體放射。 今天, 國家打基礎(chǔ)為一個新能量平臺使用氫作為能量載體供給燃料細(xì)胞和其它系統(tǒng)動力的平臺。不同于傳統(tǒng)燃燒系統(tǒng), 氫系統(tǒng)導(dǎo)致能量使用a 電池象電化學(xué)過程。當(dāng)過去常常供給車動力或發(fā)電, 燃料細(xì)胞不散發(fā)實(shí)際上污染或溫室氣體。
但是, 嚴(yán)肅的技術(shù)挑戰(zhàn)必須演講達(dá)到與基于氫的經(jīng)濟(jì)的轉(zhuǎn)折。特別是, 我們的國家將需要開發(fā)干凈的系統(tǒng)生產(chǎn)氫豐富, 付得起的供應(yīng); 廣泛的基礎(chǔ)設(shè)施為氫存貯和發(fā)行; 并且運(yùn)用氫的安全, 高效率, 和經(jīng)濟(jì)系統(tǒng)。 當(dāng)與碳隔離結(jié)合, 氫生產(chǎn)從國內(nèi)礦物燃料是一條有為的大道為保證豐富, 對環(huán)境沒有危害的氫供應(yīng)。今天, 最豐富的美國化石資源- 和一個最付