Low-Temperature Molten-Salt-Assisted Recovery of Valuable Metals from Spent Lithium-Ion Batteries

被引：157

作者：

Fan, Ersha ^{[1
]}

Li, Li ^{[1
,2
]}

Lin, Jiao ^{[1
]}

Wu, Jiawei ^{[1
]}

Yang, Jingbo ^{[1
]}

Wu, Feng ^{[1
,2
]}

Chen, Renjie ^{[1
,2
]}

机构：

[1] Beijing Inst Technol, Beijing Key Lab Environm Sci & Engn, Sch Mat Sci & Engn, 5 South Zhongguancun St, Beijing 100081, Peoples R China

[2] Collaborat Innovat Ctr Elect Vehicles Beijing, 5 South Zhongguancun St, Beijing 100081, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2019年 / 7卷 / 19期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Spent lithium-ion batteries; NH4Cl; Fluxing agent; Chlorination roasting; Water leaching; CATHODE MATERIALS; CHLORINATION; EXTRACTION; NICKEL; LI; REGENERATION; SEPARATION; COBALT; ACID; MIXTURE;

D O I：

10.1021/acssuschemeng.9b03054

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel and environmentally friendly process for utilizing spent lithium-ion batteries based on salt roasting is proposed. The separated cathode material is roasted with NH4Cl as a fluxing agent. During this process, Li and Co are converted to chlorides due to the release of HCl and NH3 from the reaction of NH4Cl, with LiCoO2. These chloride salts are readily soluble in water. The reaction parameters, including roasting temperature, time, and LiCoO2/NH4Cl mass ratio, were investigated in detail. The results showed that more than 99% Co and Li were recovered under optimum conditions: temperature of 350 degrees C, reaction time of 20 min, and a LiCoO2/NH4Cl mass ratio of 1:2. A possible reaction mechanism between LiCoO2 and NH4Cl is proposed based on thermodynamic, X-ray diffraction, and X-ray photoelectron spectroscopy analyses. The treatment of other spent lithium-ion battery cathode materials, such as LiMn2O4 and LiCo1/3Mn1/3Ni1/3O2, verified the effectiveness of the method for recovering the valuable metals.

引用

页码：16144 / 16150

页数：13

共 45 条

[41] Recycling of Spent Lithium-Ion Battery: A Critical Review [J].