Sustainable recycling of LiCoO2 cathode scrap on the basis of successive peroxymonosulfate activation and recovery of valuable metals

The Science of the Total Environment
Hao GuoQunjie Xu

Abstract

Increasing demand and waste of lithium-ion batteries (LIBs) has adversely affected resources and the environment. Multistage utilization of spent LIBs is essential to their sustainable development. Here, we propose a simple recycling method of LiCoO2 cathode scrap, based on the first use of the cathode scrap as a catalyst to degrade organic pollutants via peroxymonosulfate activation, and subsequent recovery of valuable metals from the used catalyst. Compared with pristine LiCoO2, the LiCoO2 cathode scrap exhibits excellent catalytic performance due to the active sites generated, such as the vacancy generation and electronic structure modulation by the degradation of LiCoO2 during the continuous lithiation and delithiation processes. The removal efficiency of cathode scrap to the o-phenylphenol exceeds 98% within 60 min, and the degradation efficiency is still above 95% after the 10th use because its unique sandwich and porous structure ensure the stability and recyclability. After multiple catalytic reactions, due to the generation of crack, the separation of the sandwich structure, and further degradation of active materials, the leaching efficiency of transition metals from the cathode scrap in deep eutectic solvent is promo...Continue Reading

References

Oct 11, 2014·Chemical Reviews·Emma L SmithKarl S Ryder
Oct 10, 2015·Advanced Materials·Yinlong ZhuZongping Shao
May 11, 2018·Chemical Society Reviews·M Rosa Palacín
Nov 7, 2019·Nature·Gavin HarperPaul Anderson
Dec 28, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Janine Richter, Michael Ruck

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Citations

Jul 30, 2021·Chemistry : a European Journal·Qian LiangXianhua Hou

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