Direct reuse of graphite and lithium nickel manganese cobalt oxide (NMC) recovered from ultrafast-laser ablation debris in Li-ion battery electrodes

被引:3
作者
Tancin, Ryan J. [1 ]
Ozdogru, Bertan [1 ]
Dutta, Nikita S. [1 ]
Finegan, Donal P. [1 ]
de Villers, Bertrand J. Tremolet [1 ]
机构
[1] Natl Renewable Energy Lab NREL, 15013 Denver West Pkwy, Golden, CO 80401 USA
关键词
Lithium-ion batteries; Battery recycling; Ultrafast-laser ablation; Advanced manufacturing; Graphite; Lithium Nickel Manganese Cobalt Oxide; ELECTROCHEMICAL PERFORMANCE; INTERCALATION RATES; PARTICLE-SIZE; ENHANCEMENT; CATHODE; MORPHOLOGY;
D O I
10.1016/j.jpowsour.2023.234027
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We demonstrate that debris collected from the ultrafast-laser ablation of graphite anodes can be directly reused in a lithium -ion battery with little to no negative effects on electrochemical performance. Further, we show that while post -ablation NMC (LiNi0.33Mn0.33Co0.33O2) cathode debris will require additional processing before being incorporated into an electrode, its critical materials (nickel, manganese, and cobalt) are not lost during ablation and can be recovered for recycling. Pre- and post -ablation materials are characterized with a suite of diagnostics, including SEM, TEM, X-ray CT, EDS, and XRD, to study changes in material morphology, composition and crystal structure. Graphite exhibited little to no morphological or compositional changes and a slight annealing of its crystal structure. NMC underwent profound morphological and crystallographic changes, but retained its elemental composition. Finally, post -ablation materials were re -manufactured into electrodes and cycled vs lithium metal. Graphite showed equal or better capacity and Coulombic efficiency compared to pre -ablation electrodes, while the post -ablation NMC exhibited severely reduced electrochemical performance. We discuss the outlook for application of this work to advanced manufacturing lines that produce next -generation, laser -patterned electrodes.
引用
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页数:11
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