Development of large-sized Li secondary batteries

We have developed manganese-based lithium secondary battery technology as a part of 10-year national project of the development of dispersed type battery energy storage technology. Most of the target items for the battery performance were accomplished and proved. Thus the basis for practical application was developed, however, some subjects on further durability in various circumstances and conditions still remain to be accomplished. Continuous development for mass production and cost reduction is also expected for this technology to contribute to the industry and the society.