Método hidrometalúrgico para reciclagem de metais terras raras, cobalto, níquel, ferro e manganês de eletrodos negativos de baterias exauridas de Ni-MH de telefone celular

Química Nova

Vinicius Guilherme Celante¹  Marcos Benedito José Geraldo de Freitas²  Maria de Fátima Fontes Lelis²  Vinicius Emmanuel de Oliveira dos Santos² 

[1] Instituto Federal do Espírito Santo;Universidade Federal do Espírito Santo;

关键词: rare earth metals;    batteries;    recycling;   

DOI  :  10.1590/S0100-40422014000100005

来源: DOAJ

【 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