A green process for phosphorus recovery from spent LiFePO4 batteries by transformation of delithiated LiFePO4 crystal into NaFeS2
文献类型：期刊论文
| 作者 | He, Kai; Zhang, Zhi-Yuan ; Zhang, Fu-Shen
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2020-08-05 |
| 卷号 | 395页码:1-10 |
| 关键词 | Spent LiFePO4 battery Solid waste recycling Phosphorus recovery NaFeS2 |
| ISSN号 | 0304-3894 |
| 英文摘要 | Recovery of high-content and valuable elements including phosphorus (P) is critical for recycling of spent LiFePO4 battery, but P recovery is challengeable due to the poor solubility of lithium phosphate and iron phosphate. This study compared two strategies to recover P by adopting sulfide salt to induce P dissolution, i.e., recovery of P directly from LiFePO4, and step-by-step recovery of Li then P. The results revealed that the second strategy was more efficient because of the higher recovering efficiency and selectivity. Accordingly, an acid-free process to recover P was successfully demonstrated. Li-recovery efficiency of 97.5 % was reached at a leaching time of 65 min, and nearly 100 % P-recovery efficiency was reached at 5 h. Mechanism analysis revealed that the transforming of delithiated LiFePO4 crystal to NaFeS2 was mainly responsible for P dissolution. Thermodynamic analysis and density functional theory calculation further proved the transformation reaction, and a stepwise-transformation mechanism was proposed. In addition, P was reclaimed in the form of soluble phosphate salts. The process is especially appealing due to its environmental and economic benefits for recycling spent LiFePO4 batteries. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44560]  |
| 专题 | 生态环境研究中心_固体废弃物处理与资源化实验室 |
| 推荐引用方式 GB/T 7714 | He, Kai,Zhang, Zhi-Yuan,Zhang, Fu-Shen. A green process for phosphorus recovery from spent LiFePO4 batteries by transformation of delithiated LiFePO4 crystal into NaFeS2[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,395:1-10. |
| APA | He, Kai,Zhang, Zhi-Yuan,&Zhang, Fu-Shen.(2020).A green process for phosphorus recovery from spent LiFePO4 batteries by transformation of delithiated LiFePO4 crystal into NaFeS2.JOURNAL OF HAZARDOUS MATERIALS,395,1-10. |
| MLA | He, Kai,et al."A green process for phosphorus recovery from spent LiFePO4 batteries by transformation of delithiated LiFePO4 crystal into NaFeS2".JOURNAL OF HAZARDOUS MATERIALS 395(2020):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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