通过竞争性协调,实现高固体-液体比率,以有效地回收使用过的电池中的金属
Jing Tan1,2, Rui Huang1,2, Kunpeng Li1,2
1School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
Angewandte Chemie (International ed. in English)
|December 23, 2024
概括
从离子电池中回收关键金属是通过一种新型的深度环氧溶剂来增强的. 这种方法改善了金属出和选择性分离,提供了有利可图和可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可持续化学 可持续化学
背景情况:
- 从使用过的离子电池中回收关键金属对新能源行业至关重要.
- 在有效地从稳定的阴极结构中出金属并实现同时分离方面仍然存在挑战.
- 由于这些复杂性,现有的方法难以在工业规模上应用.
研究的目的:
- 开发一种有效的深度环氧化溶剂 (DES),用于从使用过的三元离子电池阴极中增强浸出和选择性金属回收.
- 调查竞争性协调战略,以提高金属回收的效率.
- 评估拟议的回收过程的经济可行性和环境影响.
主要方法:
- 设计一种使用竞争性协调策略的新型三元性深度环氧溶剂 (DES).
- 应用DES在高固体液体比率 (1:10) 的废电池阴极中出金属.
- 对键相互作用的分析以及竞争对手连接物 (p-toluenesulfonic acid) 对金属-酸协调的影响.
主要成果:
- 与二进制DES相比,三元DES的键增加了16.5%,增强了金属氧键裂变的反应动力学.
- 一个竞争的配体优先占据了纳米结构外,减少了溶解的酸,并促进了NiC2O4·2H2O沉,其纯度约为95.7%.
- 该过程显示出显著的利能力 (每公斤原料16.05美元),并减少了温室气体排放.
结论:
- 使用新型DES开发的竞争协调策略提供了一种高效和有选择的方法,用于从使用过的离子电池中回收关键金属.
- 这种方法克服了金属和分离的关键挑战,使其适合工业应用.
- 该过程提供了一个可持续和经济可行的解决方案,为关键的可持续性倡议做出了贡献.
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