Manufacturing method of graphene coated inorganic particle and graphene coated inorganic manufactured by the same

The present invention provides a manufacturing method of a graphene-coated inorganic particle and the graphene-coated inorganic particle manufactured thereby. The manufacturing method comprises the following steps of: producing a first mixed solution by inserting an inorganic particle into a surface processing solution including a coupling agent (A); mixing the first mixed solution (B); obtaining the inorganic particle coupled with a functional group at a surface by filtering the first mixed solution and then drying the same (C); producing a second mixed solution by inserting the surface-processed inorganic particle into a solution including non-oxidized graphene (D); and mixing the second mixed solution (E). According to the present invention, a problem of non-oxidized graphene that is hard to be coated with other inorganic materials due to insufficient functional group is solved. 본 발명은 커플링제를 포함하는 표면 처리 용액에 무기 입자를 투입하여, 제1 혼합 용액을 제조하는 단계(A); 상기 제1 혼합 용액을 교반하는 단계(B); 상기 제1 혼합 용액을 여과한 후 건조하여, 표면에 작용기(functional group)가 결합된 무기 입자를 얻는 단계(C); 상기 표면 처리된 무기 입자를 비산화 그래핀을 포함한 용액에 투입하여, 제2 혼합 용액을 제조하는 단계(D); 및 상기 제2 혼합 용액을 교반하는 단계(E);를 포함하는, 그래핀 코팅된 무기 입자의 제조 방법 및 이에 의해 제조된 그래핀 코팅된 무기 입자를 제공한다.