公开(公告)号：US20220073434A1

公开(公告)日：2022-03-10

申请号：US17528450

申请日：2021-11-17

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Muneyasu SUZUKI ,  Jun Akedo ,  Shusuke Kanazawa ,  Motoshi Itagaki ,  Shun Hasegawa ,  Tetsuo Tsuchiya ,  Hirobumi Ushijima

IPC: C04B38/00 ,  C04B41/00 ,  C04B35/491 ,  C04B41/48 ,  C04B41/47 ,  H01M4/36

Abstract: Disclosed is a highly dense aggregate of brittle material particles having an interface at which the particles are bonded to each other and pores between the brittle material particles structuring the highly dense aggregate, where a porosity which is a volume ratio of the pores with respect to the whole of the highly dense aggregate is equal to or less than 20%, and a volume ratio of the pores communicating with an apparent outer surface of the highly dense aggregate with respect to a volume of all of the pores of the highly dense aggregate is equal to or higher than 65%.