Experimental measurement of electro-chemo-mechanical properties of a composite silicon electrode in lithium ion batteries

Li, Dawei; Wan, Hongfei; Liu, Huibing; Wang, Yikai; Zhang, Junqian

doi:10.1039/d2cp01545e

Cited by 5 publications

(1 citation statement)

References 30 publications

(49 reference statements)

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“…28 Li et al designed a BCMS and used it to analyse the mechanical properties of the composite electrode. 29,30 Jiang et al combined experiments with simulations to illustrate the evolution of mechanical properties at various C-rates in the composite graphite electrode. 31 Irreversible mechanical damage during cycling can lead to the destruction of the internal structure of the cathode, reduce coulomb efficiency, and increase the risk factor inside the LIBs.…”

Section: Introductionmentioning

confidence: 99%

A real time study of the coupled electrochemical and mechanical behaviors of the spinel cathodes in LIBs

Li,

Jin,

Jiang

et al. 2024

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

A real time study of the coupled electrochemical and mechanical behaviors of the spinel cathodes in LIBs

Li,

Jin,

Jiang

et al. 2024

Phys. Chem. Chem. Phys.

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Enhanced interfacial bonding for boosting the performance of lithium-ion batteries through an etched ordered checkerboard patterns on current collectors

Yu,

Yang,

et al. 2024

Journal of Energy Storage

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Investigation into the impact of charging rates on the stress development within silicon composite electrodes

Li,

Jiang,

et al. 2024

The Journal of Chemical Physics

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Silicon, renowned for its remarkable energy density, has emerged as a focal point in the pursuit of high-energy storage solutions for the next generation. Nevertheless, silicon electrodes are known to undergo significant volume expansion during the insertion of lithium ions, leading to structural deformation and the development of internal stresses, and causing a rapid decline in battery capacity and overall lifespan. To gain deeper insights into the intricacies of charge rate effects, this study employs a combination of in situ measurements and computational modeling to elucidate the cyclic performance of composite silicon electrodes. The findings derived from the established model and curvature measurement system unveil the substantial alterations in stress and deformation as a consequence of varying charge rates. Notably, the active layer experiences compressive forces that diminish as the charge rate decreases. At a charge rate of 0.2, the active layer endures a maximum stress of 89.145 MPa, providing a comprehensive explanation for the observed deterioration in cycling performance at higher charge rates. This study not only establishes a fundamental basis for subsequent stress analyses of silicon electrodes but also lays a solid foundation for further exploration of the impact of charge rates on composite silicon electrodes.

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Experimental measurement of electro-chemo-mechanical properties of a composite silicon electrode in lithium ion batteries

Abstract: The applications of silicon (Si)-based electrodes in lithium ion batteries have been impeded by the mechanical degradation caused by the lithiation/delithiation-induced volume changes. Understanding the evolution of mechanical behavior and...

Cited by 5 publications

References 30 publications

A real time study of the coupled electrochemical and mechanical behaviors of the spinel cathodes in LIBs

A real time study of the coupled electrochemical and mechanical behaviors of the spinel cathodes in LIBs

Enhanced interfacial bonding for boosting the performance of lithium-ion batteries through an etched ordered checkerboard patterns on current collectors

Investigation into the impact of charging rates on the stress development within silicon composite electrodes

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