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The lithium-ion battery (LIB) is a small and lightweight rechargeable battery which greatly contributed to the advent of the mobile IT society. For over 25 years in consumer electronics applications, the LIB’s performance and reliability have been improved while its cost has been reduced. Currently the LIB is at a turning point in automotive applications. This will not simply be electrification of vehicle drive systems, but integration with the latest technologies such as IoT, AI, and 5G. This is expected to usher in a major social transformation in terms of the future of mobility.

What will the electrification of vehicles be like from 2025 onward, and how will the LIB contribute to a sustainable society? We often hear the buzzword “CASE” regarding the future of mobility. This is an important concept. “C” stands for connected, meaning vehicles will be connected to the internet, which is the concept of IoT. “A” stands for autonomous, meaning vehicles will drive without humans operating them, which is a kind of AI technology. “S” stands for shared, meaning vehicles that are not individually owned. “E” stands for electric, meaning vehicle drive systems will be electrified. These four aspects of the CASE concept are symbolic of the future of mobility.

The negative legacies of the industrial revolution, global environmental issues require a fundamental solution. In combination with new technologies such as AI, IoT, and 5G, the LIB can enable a truly sustainable society.