Insights into the multi-functional lithium difluoro(oxalate)borate additive in boosting the Li-ion reaction kinetics for Li<sub>3</sub>VO<sub>4</sub> anodes

Zhang, Miaomiao; Pei, Cunyuan; Xiang, Qiqi; Liu, Lintao; Dai, Zhongxu; Ma, Huijuan; Ni, Shibing

doi:10.1039/d3cp04952c

Phys. Chem. Chem. Phys.

2024

DOI: 10.1039/d3cp04952c

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Insights into the multi-functional lithium difluoro(oxalate)borate additive in boosting the Li-ion reaction kinetics for Li₃VO₄ anodes

Miaomiao Zhang,

Cunyuan Pei,

Qiqi Xiang

et al.

Abstract: The schematic diagram displays the structural formula of lithium difluoro(oxalate)borate (LiDFOB). The morphology of the electrode material after cycling can be maintained with the addition of LiDFOB.

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A Comparison of Standard SEI Growth Models in the Context of Battery Formation

Manmi,

Tuchel,

Kendrick

et al. 2024

J. Electrochem. Soc.

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Growth of the Solid Electrolyte Interphase (SEI) layer on negative electrode particles during the formation cycle is one of the most complex and least understood steps of lithium-ion battery manufacturing. This initial SEI formation significantly impacts battery performance, lifetime, and degradation. Zero-dimensional models, which reduce the complexity of SEI's morphology, material, and structure, are commonly used to study long-term SEI growth rates and capacity fade. These models are derived based on limiting mechanisms. We aim to compare the most common SEI growth models, focusing on the first few cycles at low C-rates representing formation protocols. Using consistent parameters across models, we seek to understand if they can capture the dynamics of SEI formation. We conducted qualitative comparisons with experimental measurements of Coulombic efficiency in 2032-type coin cells at low C-rate. Our analysis shows that the models predict SEI growth in the first cycle to be higher than in subsequent cycles. However, the difference between cycles in these models is insufficient to explain the experimental results, which indicate a capacity fade during the first cycle that is two orders of magnitude higher than in later cycles. This suggests new models are needed to accurately describe the physics of the formation cycle.

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A Comparison of Standard SEI Growth Models in the Context of Battery Formation

Manmi,

Tuchel,

Kendrick

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

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Insights into the multi-functional lithium difluoro(oxalate)borate additive in boosting the Li-ion reaction kinetics for Li₃VO₄ anodes

Abstract: The schematic diagram displays the structural formula of lithium difluoro(oxalate)borate (LiDFOB). The morphology of the electrode material after cycling can be maintained with the addition of LiDFOB.

Cited by 1 publication

References 60 publications

A Comparison of Standard SEI Growth Models in the Context of Battery Formation

A Comparison of Standard SEI Growth Models in the Context of Battery Formation

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Insights into the multi-functional lithium difluoro(oxalate)borate additive in boosting the Li-ion reaction kinetics for Li3VO4 anodes

Abstract: The schematic diagram displays the structural formula of lithium difluoro(oxalate)borate (LiDFOB). The morphology of the electrode material after cycling can be maintained with the addition of LiDFOB.

Cited by 1 publication

References 60 publications

A Comparison of Standard SEI Growth Models in the Context of Battery Formation

A Comparison of Standard SEI Growth Models in the Context of Battery Formation

Contact Info

Product

Resources

About

Insights into the multi-functional lithium difluoro(oxalate)borate additive in boosting the Li-ion reaction kinetics for Li₃VO₄ anodes