Life-cycle evolution and failure mechanisms of metal-contaminant defects in lithium-ion batteries

Sun, Yukun; Yuan, Yuebo; Lü, Yao; Pu, Mingwei; Kong, Xiangdong; Lu, Languang; Wang, Hewu; Han, Xiao; Ouyang, Minggao

doi:10.1016/j.jpowsour.2022.232591

Cited by 12 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These Cu impurities can cause battery safety risks. [11][12][13] However, it would be costly to reduce the Cu impurities inherent in SG to the standard of battery-grade graphite, which hinders the large-scale recycling of SG. Therefore, how to safely convert and utilize the Cu impurities inherent in SG is crucial for promoting the recycling of spent anodes.…”

Section: Introductionmentioning

confidence: 99%

Directly upgrading spent graphite anodes to stable CuO/C anodes by utilizing inherent Cu impurities from spent lithium-ion batteries

Chen,

Yu,

Huang

et al. 2024

Green Chem.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Directly upgrading spent graphite anodes to stable CuO/C anodes by utilizing inherent Cu impurities from spent lithium-ion batteries

Chen,

Yu,

Huang

et al. 2024

Green Chem.

View full text Add to dashboard Cite

show abstract

“…3 Studies have focused on the adverse effects of transition-metals (Ni, Co, and Mn ions) released from materials like NMC into electrolyte, leading to degradation of the battery performance. [4][5][6] Most of this research has concentrated on the anode side, where the influence of such impurities is notable. For example, Zhan et al 7 proved that the presence of Mn 2+ in the electrolyte can significantly diminish the electrolyte stability and affect the stability of the solid electrolyte interphase (SEI) leading to cell capacity fading.…”

mentioning

confidence: 99%

Impact of Trace Nickel in the Electrolyte on the Electrochemistry of Positive Electrodes for Lithium-Ion Batteries

Banov,

Breddemann,

Khodeir

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

This study looks into the impact of Ni2+ ions as an electrolyte impurity on the electrochemical performance of NMC811 electrodes. The results indicate that the presence of Ni impurities in the electrolyte increases the polarization, primarily at the oxide-electrolyte interface. The influence on the metallic lithium counter electrode and the electrolyte conductivity can be neglected. The Ni impurities induce the formation of high impedance CEI layers on the oxide electrode, affected by both cations and anions of the impurity and impeding the current flow and cell performance. Ni impurities also enhance electrochemical side reactions, especially oxidation of the electrolyte, diminishing both, the Coulombic efficiency during cycling and the practical specific charge. The rates of these side reactions are related to the Ni2+ ion concentration. C-rate tests confirmed that a contaminated electrolyte reduces the practical specific charge due to the increased interfacial impedance of the CEI, especially at high discharge rates. The cycling performance of NMC811 electrodes in contaminated electrolytes showed that Ni impurities, especially NiCO3, promoted capacity fading during cycling and increased cell polarization. To optimize the performance of NMC-based oxide electrodes, controlling the concentration of Ni ions in the electrolyte is critical.

show abstract

The local lithium plating caused by anode crack defect in Li-ion battery

Yuan,

Wang,

Han

et al. 2024

Applied Energy

View full text Add to dashboard Cite

Life-cycle evolution and failure mechanisms of metal-contaminant defects in lithium-ion batteries

Cited by 12 publications

References 25 publications

Directly upgrading spent graphite anodes to stable CuO/C anodes by utilizing inherent Cu impurities from spent lithium-ion batteries

Directly upgrading spent graphite anodes to stable CuO/C anodes by utilizing inherent Cu impurities from spent lithium-ion batteries

Impact of Trace Nickel in the Electrolyte on the Electrochemistry of Positive Electrodes for Lithium-Ion Batteries

The local lithium plating caused by anode crack defect in Li-ion battery

Contact Info

Product

Resources

About