Reference Data
Research and development activity on activated carbon for power storage devices
2019 Volume 2019 Issue 287 Pages 74-77
Details
2019 Volume 2019 Issue 287 Pages 74-77
Trends in research and the development of activated carbons is surveyed from information on patent application publications using international patent classification (IPC) (C01B 31/08, B01J 20/20, and so on) and Japan platform for patent information (J-PlatPat). The number of application publications which relates to electric double-layer capacitors (EDLCs) or lithium ion capacitors (LICs) was about 500 between 1989 to 2017. It is found that the important issue for EDLCs or LICs was to increase their capacitance, and the number of patent applications relating to alkali activation is 20∼30%, or more.
