MODIFIED GRAPHITE AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE

This application provides modified graphite and a preparation method thereof, a secondary battery containing the modified graphite, a battery module, a battery pack, and an electrical device. In particular, the modified graphite according to this application includes a graphite moiety and a binder moiety covalently linked to the graphite moiety. The binder moiety possesses a structure expressed as Formula (IV'). The modified graphite according to this application solves the problem that the binder floats up during the preparation of the negative electrode plate of the secondary battery.