选择性和分离通过生物酸介导的电
Tianchen Li1, Chi Zhang2, Hewen Zhou3
1Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
Science advances
|March 6, 2026
概括
生物酸通过改变离子环境,通过电取增强和的分离. 酸具有很高的选择性,可以有效地从电池废物中回收用于可持续的金属回收利用.
科学领域:
- 材料科学与工程 材料科学与工程
- 电化学 电化学 电化学
- 可持续化学 可持续化学
背景情况:
- 由于对 (Co) 和 (Ni) 的需求日益增加,因此需要有效地从不同来源进行分离.
- 电为CO/Ni分离提供了一种比溶剂提取更绿色的替代方案,但由于类似的降解潜力,它面临着挑战.
研究的目的:
- 开发一种具有成本效益和可持续的选择性和分离方法.
- 通过使用生物酸来增强Co/Ni的电化学分离,以克服类似降解潜力的局限性.
主要方法:
- 使用成本效益高且可回收的生物酸来修改和离子的溶解环境.
- 研究了酸对选择性的影响,观察了双核复合物的形成.
- 应用生物酸修饰的电气取工艺,以三元离子电池泄物批量和可扩展的流量系统.
主要成果:
- 酸显示出最高的选择性,放大了Co和Ni之间的降解潜力差异.
- 在批量分离模式下达到99.1%的Co纯度.
- 在一个可扩展的流量系统中,实现了金属Co (95.1%),Ni (96.5%) 和二氧化 (~100%) 的逐步回收,产量高.
结论:
- 生物酸改性电气取为选择性Ni/Co分离提供了一个可持续和普遍的电化学平台.
- 与传统方法相比,该过程提供了优越的经济和环境效益.
- 能够有效地回收复杂原料中的贵金属,如离子电池泄物.
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