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Compared to vehicles powered by the internal combustion engine, fuel-cell powered vehicles have very high energy conversion efficiency, and near-zero pollution, CO2 and water vapour being the only emissions. Fuel- cell-powered EV’s (electric vehicles) score over battery operated EV’s in terms of increased efficiency and easier and faster refuelling.
In India, diesel run buses are a major means of transport and these emit significant quantities of SPM and SO2.Thus, fuel-cell powered buses and electric vehicles could be introduced with relative ease to dramatically reduce urban air pollution and to make a positive impact on urban air quality.