The invention discloses a preparation method of a super large lamella RGO loaded ultrafine beta-FeOOH
nanometer particle lithium ion battery negative
electrode material. The preparation method comprises following steps: oxidized
graphene is dispersed in deionized water so as to obtain a suspending liquid A; a certain amount of a soluble salt,
sodium chloride, and
urea are added into absolute ethylalcohol and deionized water, and then are mixed with the suspending liquid A so as to obtain a suspending liquid B; the suspending liquid B is introduced into a homogeneous hydro-
thermal reaction vessel, the homogeneous hydro-
thermal reaction vessel is sealed, and is introduced into a homogeneous hydro-
thermal reaction equipment for hydro-thermal reaction, and then natural cooling to
room temperature is carried out so as to obtain a product C; the product C is washed with water and
alcohol respectively; and after washing, the product is dispersed in water so as to obtain a product D; the product D is subjected to freeze-
drying so as to obtain the super large lamella RGO loaded ultrafine beta-FeOOH
nanometer particle lithium ion battery negative
electrode material. According to the preparation method,
graphene combination and
particle size reduction are adopted to improve the performance of beta-FeOOH, so that more electrochemical active sites and
ion transmission channels are provided, battery reversible capacity is increased, the reversible capacity at 5000mA g<-1> is larger than 1000mAh g<-1>, and the potential capacity of the super large lamella RGO loaded ultrafine beta-FeOOHnanometer particle
lithium ion battery negative
electrode material is excellent.