Li-ion Battery is regarded as promising alternative of clean and high efficiency power source for automobile. Regarding Li-ion battery, higher energy density with lower cost is required for longer cruising range, which is a key to BEV market expansion. Low temperature performance and higher power density are also important for not only BEV but also other type of EV such as plug-in hybrid because Li-ion battery is a common power device for various kinds of zero emission vehicle system. However, complex electrochemical and mass transport phenomena caused significant failure mode such as significant increase in overpotential and degradation, resulting in technical road block. From that point of view, fundamental research is necessary to find new innovation for future, in particular, new modeling and diagnostic technologies which can visualize phenomena inside electrochemical power device. With this background, this report will focus on multi-scale and physics research in Nissan.