Abstract
Nowadays, technologies for highly efficient electric vehicles (EVs) suited for society mobility are needed. Battery technology is one of those important technologies for EVs. This paper aims to map out trade-off between battery technologies that were ever invented. Battery performance requirements depend on the vehicle application so that the suitable battery gives both of high energy density and power density. It is known that lithium-ion batteries are the most suitable existing technology for EVs. This paper also describes a comparative value chain of electric car battery to evaluate activities within and around and relates them. From those value chains, then global market shares, patents and research papers related to the batteries are discussed to measure the ability to compete among countries. In addition, this paper also describes several potential energy technologies for future energy storage to increase the battery performance.
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