Abstract
While the oil price is rising unscrupulously and global warming has also drawn lots of attention around the world, so-called energy-efficiency or fuel-efficiency and environmental protection have become crucial issues nowadays. Most of waste gas emissions come from transportation vehicles, especially cars; therefore, popularizing the electrical cars and motorcycles could not only mitigate air pollution but also global warming . The usage of electrical vehicles, however, has not been quite common currently, and the results from that could be considered as, firstly, the electrical vehicles are far more expensive than others. Secondly, lacking of charging stations, and the limitation of battery life-cycle ...etc, and it all pointed out one key factor–battery. In this research, we would emphasis on electrical cars-use battery, and we would conduct inductive analysis by interviewing with nine experts which would allow us to find out the most suitable battery type . Then, we would further conduct scenario analysis, in order to generate the overall trend in different period of developing time, short, medium, and long-term development of Ni-MH battery, LiFePO4 battery and NMC battery these three different kinds of batteries in the future. Moreover, by conducting scenario analysis which would allow us to discover that the policy of establishing power stations and charging stations which plays a crucial role of developing the electrical-vehicle industry, and it is also where the every government throughout the world should to support.