Lithium ion secondary battery cathode, binder for lithium ion secondary battery cathode and lithium ion secondary battery using them

摘要

A lithium ion secondary cell anode, wherein carbon material including graphite having a d002 of not more than 0.3370 nm of X-ray parameters that can be obtained from the Gakushin-method for X-ray diffraction of carbon is used as a part of an active material, and a macromolecular material having a surface energy gammaS of not less than 30 mJm-2 is used as a binder.