Cleaning the Air and Improving Health with Hydrogen Fuel-Cell Vehicles

American Association for the Advancement of Science (AAAS) - Tập 308 Số 5730 - Trang 1901-1905 - 2005
Mark Z. Jacobson1,2, Whitney Colella1,2, David M. Golden1,2
1Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305–4020, USA.
2Department of Mechanical Engineering, Stanford University, Stanford, CA 94305–3032, USA.

Tóm tắt

Converting all U.S. onroad vehicles to hydrogen fuel-cell vehicles (HFCVs) may improve air quality, health, and climate significantly, whether the hydrogen is produced by steam reforming of natural gas, wind electrolysis, or coal gasification. Most benefits would result from eliminating current vehicle exhaust. Wind and natural gas HFCVs offer the greatest potential health benefits and could save 3700 to 6400 U.S. lives annually. Wind HFCVs should benefit climate most. An all-HFCV fleet would hardly affect tropospheric water vapor concentrations. Conversion to coal HFCVs may improve health but would damage climate more than fossil/electric hybrids. The real cost of hydrogen from wind electrolysis may be below that of U.S. gasoline.

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Supported by the Global Climate and Energy Project at Stanford University and by NASA. We thank J. Koomey and M. Delucchi for helpful comments.

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American Association for the Advancement of Science (AAAS)

Tập 308 Số 5730

1901-1905

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