Abstract
The industry and business world are very interested in Lithium ion battery （LIB）, however, R & D of new materials are necessary because some problems still remain. These shapes of new material are particle then the powder technology is necessary to bring out the performance of its. The authors show these important technologies as follows.
・Milling technology for recent trend and its answer
・Particle size distribution and its problem on fine particles
・Synthesis technology of nano particles which is based on flame synthesis
・Countermeasure for nano risk which is called as containment technology
・Dry particle composing technology for improvement of battery performance
