从废旧锂离子电池中回收锂和钴的生物碳辅助碳热还原工艺

IF 2.5 3区 材料科学 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Akhila Vasamsetti, Arrthi Ravitchandiran, Saradh Prasad Rajendra, Mohamad S. AlSalhi, Rajamohan Rajaram, Subramania Angaiah
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引用次数: 0

摘要

锂离子电池需求的增加是由于其在许多电子小工具和电动汽车中的应用。回收利用废旧锂离子电池对减少环境污染、降低材料和经济稀缺性起着至关重要的作用。在本文中,我们采用了一种基于生物碳的高效环保型碳热还原法,然后通过水浸法从基于钴酸锂 (LCO) 的锂离子电池中回收锂和钴。在这里,碳化绒荚(CFP)被用作碳热还原过程的还原剂。在碳热还原过程中,生物碳将 LiCoO2 转化为 Co3O4 和 Li2CO3。之后,锂被去离子水浸出,浸出效率高达 98%,残留物中的钴则为 Co3O4。残渣再经过熔炼过程,以 Co3O4 的形式回收 98.5%的钴。这种碳热绿色回收工艺既节能又环保,将为锂电池的可持续回收利用带来新的前景,同时最大限度地减少二次废物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Bio-Carbon Assisted Carbothermal Reduction Process for the Recovery of Lithium and Cobalt from the Spent Lithium-Ion Batteries

Bio-Carbon Assisted Carbothermal Reduction Process for the Recovery of Lithium and Cobalt from the Spent Lithium-Ion Batteries

The increase in demand for lithium-ion batteries is due to their usage in many electronic gadgets and electric vehicles. Recycling spent lithium-ion batteries plays an essential role in reducing environmental pollution and material and economic scarcity. In this paper, we employed an efficient and environmentally friendly bio-carbon based carbothermal reduction followed by a water leaching process to recover lithium and cobalt from LiCoO2(LCO)-based lithium-ion batteries. Here, the carbonized flamboyant pods (CFP) are used as a reducing agent for the carbothermal reduction process. During the carbothermal reduction process, the bio-carbon converts LiCoO2 into Co3O4 and Li2CO3. Afterwards, lithium is leached out by deionized water with a leaching efficiency of 98%, leaving Co in the residue as Co3O4. This residue is further undergoing a smelting process to recover 98.5% of Co as Co3O4. This carbothermal green recovery process is energy conserving, environmentally friendly and will bring perspective for sustainable recycling of LIBs with a minimized secondary waste.

Graphical Abstract

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来源期刊
Journal of Sustainable Metallurgy
Journal of Sustainable Metallurgy Materials Science-Metals and Alloys
CiteScore
4.00
自引率
12.50%
发文量
151
期刊介绍: Journal of Sustainable Metallurgy is dedicated to presenting metallurgical processes and related research aimed at improving the sustainability of metal-producing industries, with a particular emphasis on materials recovery, reuse, and recycling. Its editorial scope encompasses new techniques, as well as optimization of existing processes, including utilization, treatment, and management of metallurgically generated residues. Articles on non-technical barriers and drivers that can affect sustainability will also be considered.
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