Abstract
A presently used lithium secondary battery was industrialized in 1991, based on the long time R&D by many academic and industrial researchers. In this thesis, presentations of R&D and other data in the Electrochemical Society of Japan and its battery committee for twenty years are analyzed to clear particulars in this R&D. (1) The R&D needs were kept for the very long period, brought from newly-developed portable electronic instruments, (2) newness in scientific principles in many R&D themes lasted over the period and attracted many academic researchers, (3) the technical and developing powers of battery companies, which developed many batteries in the past, realized the usable battery, resolving the theoretical difficulties, (4) co-ownership of R&D results brought from the active working in the battery committee, besides the Society itself, promoted the R&D and the industrialization. These are particulars in the R&D and are useful for creation of a new industry hereafter.
