Importance of Next-Generation Batteries

Abstract

Rechargeable batteries have been utilized in Natural Energy System and Electric Vehicle Applications, in order to reduce the production of carbon dioxide in our society. Lithium-ion battery has been utilized in these applications due to its highest energy density among rechargeable batteries. However, a higher energy density of rechargeable batteries is needed for future energy society. In this section, a background of development of next-generation batteries is introduced to understand the present status of rechargeable lithium-ion battery and next-generation batteries. Especially, some specification and performance of batteries for electric vehicles and electric power plant with natural energy are described. In addition, life cycle assessment of carbon dioxide from four kinds of vehicles, such as gasoline vehicle, diesel vehicle, hybrid vehicle and electric vehicle, is compared and discussed to know a proper direction of next-generation battery development. Moreover, some of the fundamental electrochemical aspects of rechargeable battery are basically discussed to realize real batteries with higher energy density, with other reasonable performance, such as power density, safety and life.