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引用次数: 0
摘要
电动汽车是由电动机驱动的,利用储存在电池中的电能。与传统汽车相比,这种汽车可能具有的优势主要体现在城市空气污染更少、对化石燃料的依赖更少、使用时间更长的成本效益等方面。据彭博社估计,到2035年,全球销售的汽车中有一半将是电动汽车。电动汽车对环境有很多好处,然而,电力的来源很重要。全球能源消费总量可分为电力、运输和供暖三大类,占2019年使用能源的84.3%。来自化石燃料。交通运输中使用的几乎所有能源都来自化石,63.3%的电力也来自化石燃料(Our World in Data, 2019)。虽然电动汽车的使用正在增加,但电力生产往往不环保。然而,有些国家发展的能源系统几乎完全依靠污染较少或无污染的能源。
An Analysis of the Environmental Impact of Electric Vehicles
Electric vehicles are powered by electric motors, using the electric energy strored stored in batteries. Possible advantages of such cars compared to conventional ones are mostly reflected in less air pollution in cities, less dependence on fossil fuels, cost-effectiveness for a longer period, and so on. According to Bloomberg estimates, half of the cars sold worldwide in 2035 will be electric vehicles. Electric vehicles have numerous environmental benefits, however, the origin of electricity is important. Total energy consumption in the world can be divided into three groups: electricity, transport and heating, and 84.3% of used energy in 2019. came from fossil fuels. Almost all the energy used in transport comes from fossils, and 63.3% of electricity also comes from fossil fuels (Our World In Data, 2019.). Although use of electric vehicles is increasing, electricity production is often not environmentally friendly. However, some countries have developed energy systems relying almost entirely on less polluting or non-polluting energy sources.