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重新利用强力黑酒作为降温剂,用于增强离子电池漏
Ana R F Carreira1, André F M Nogueira1, Inês L D Rocha1
1CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
ChemSusChem
|February 7, 2024
概括
制造纸的副产品黑色液体,有效地提高了金属的回收从消耗的离子电池 (LIBs) 当与硫酸一起使用时. 这种可再生的减少剂提高了漏效率,特别是在富含的材料中.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
- 水电金术是指用水电金术进行金术.
背景情况:
- 硫酸 (H2SO4) 在经济上有利于离子电池 (LIB) 循环利用,但难以溶解高价值金属氧化物.
- 为了改善从LIB阴极材料中溶解过渡金属,需要降解剂.
- 工业黑色液体 (BL),是Kraft纸加工的副产品,具有潜在的可再生减少剂.
研究的目的:
- 调查工业黑液 (BL) 作为可再生的还原剂的有效性,用于利用硫酸 (H2SO4) 来从废弃的LIB中提升过渡金属的液体金.
- 评估BL添加对各种LIB阴极化学物质漏效率的影响.
- 为了优化漏条件,并了解BL的化学组在减少过程中的作用.
主要方法:
- 使用废弃LIB粉末与硫酸 (H2SO4) 和不同度的酸性工业黑色液体 (BL) 进行了漂水实验.
- 重点放在NMC111 (LiMnxCo<0xE1><0xB5><0xA7>Ni<0xE2><0x82><0x9B>O2) 阴极材料上,以研究BL度和金属水产量之间的相关性.
- 确定了优化条件 (2.0mol·L-1 H2SO4,50vol% BL,353 K),并分析了在BL中经过浸后的化学组降解.
主要成果:
- 酸性BL显著提高了来自各种LIB阴极化学的过渡金属的漏效率,对富含的材料的影响最为明显.
- 在NMC111材料的BL度和漂水产量之间观察到线性相关性.
- 使用2.0mol·L-1H2SO4和50vol%BL在353K的温度下实现了最佳的浸出性能,在BL中氧化和芳香基的显著降解.
结论:
- 工业黑色液体是一种有效的可再生的减少剂,可增强从废弃物LIB中提取过渡金属的水力金回收.
- 在BL中的氧化和芳香函数组对于在洗过程中减少金属氧化物至关重要.
- 通过pH调整和酸沉,可以很容易地回收炼后的金属,从而促进了循环经济方法的LIB回收利用.
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