Hydrometallurgical method for recycling rare earth metals, cobalt, nickel, iron, and manganese from negative electrodes of spent Ni-MH mobile phone batteries

Química Nova

Universidade Federal do Espírito Santo, Vitória, Brasil¹  Celante, Vinicius Guilherme¹  Freitas, Marcos Benedito José Geraldo de¹  Santos, Vinicius Emmanuel de Oliveira dos¹  Instituto Federal do Espírito Santo, Aracruz, Brasil¹  Lelis, Maria de Fátima Fontes¹ 

关键词: rare earth metals;    batteries;    recycling.;   

DOI  :  10.1590/S0100-40422014000100005

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A hydrometallurgical method for the recovery of rare earth metals, cobalt, nickel, iron, and manganese from the negative electrodes of spent Ni - MH mobile phone batteries was developed. The rare earth compounds were obtained by chemical precipitation at pH 1.5, with sodium cerium sulfate (NaCe(SO4)2.H2O) and lanthanum sulfate (La2(SO4)3.H2O) as the major recovered components. Iron was recovered as Fe(OH)3 and FeO. Manganese was obtained as Mn3O4.The recovered Ni(OH)2 and Co(OH)2 were subsequently used to synthesize LiCoO2, LiNiO2 and CoO, for use as cathodes in ion-Li batteries. The anodes and recycled materials were characterized by analytical techniques.

【 授权许可】

Unknown