Strain gradient enhanced chemo-mechanical modeling of fracture in cathode materials for lithium-ion batteries

Singh, Avtar; Pal, Siladitya

doi:10.1016/j.ijsolstr.2021.111098

Cited by 9 publications

(4 citation statements)

References 174 publications

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“…As a result, electrons do not flow well in all parts of the silicon. Hybrid nanostructures can be used to solve this problem, for example a silicon nanotube whose core contains conductive materials or vice versa has a conductive coating [62][63][64][65][66]. A comparison between the two categories of uncoated and carbon-coated silicon nanowires has shown that [33,37,38] carbon-coated nanowires maintain considerable capacity.…”

Section: Different Nano Morphologiesmentioning

confidence: 99%

“…In fact, it acts as a kinetic inhibitor (like the passive layer of aluminum oxide, which prevents oxygen from reaching the lower aluminum and prevents the rest of the aluminum from oxidizing). On the other hand, because it is an electron insulator, it also prevents the electron from reaching the electrolyte [62][63][64][65]. Therefore, neither the electron can reach the electrolyte molecule nor the electrolyte molecule can move towards the electron in the anode, both of which cause the electrolyte to regenerate and have a self-limiting reaction.…”

Section: Electrolyte Decomposition In the Anodementioning

confidence: 99%

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Nano and Battery Anode: A Review

Majdi¹,

Latipov

Борисов

et al. 2021

Nanoscale Res Lett

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Improving the anode properties, including increasing its capacity, is one of the basic necessities to improve battery performance. In this paper, high-capacity anodes with alloy performance are introduced, then the problem of fragmentation of these anodes and its effect during the cyclic life is stated. Then, the effect of reducing the size to the nanoscale in solving the problem of fragmentation and improving the properties is discussed, and finally the various forms of nanomaterials are examined. In this paper, electrode reduction in the anode, which is a nanoscale phenomenon, is described. The negative effects of this phenomenon on alloy anodes are expressed and how to eliminate these negative effects by preparing suitable nanostructures will be discussed. Also, the anodes of the titanium oxide family are introduced and the effects of Nano on the performance improvement of these anodes are expressed, and finally, the quasi-capacitive behavior, which is specific to Nano, will be introduced. Finally, the third type of anodes, exchange anodes, is introduced and their function is expressed. The effect of Nano on the reversibility of these anodes is mentioned. The advantages of nanotechnology for these electrodes are described. In this paper, it is found that nanotechnology, in addition to the common effects such as reducing the penetration distance and modulating the stress, also creates other interesting effects in this type of anode, such as capacitive quasi-capacitance, changing storage mechanism and lower volume change.

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Section: Different Nano Morphologiesmentioning

confidence: 99%

Section: Electrolyte Decomposition In the Anodementioning

confidence: 99%

Nano and Battery Anode: A Review

Majdi¹,

Latipov

Борисов

et al. 2021

Nanoscale Res Lett

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“…Because the thickness of the Cu foil is significantly smaller than the other two dimensions, we incorporated the effect of length scale to determine the deformation behavior accurately. 13 The length scale here can be correlated to either the Cu thickness or the grain size along the thickness direction. Figure 2b illustrates variation of the buckling stress (i.e., the stress required to buckle/wrinkle) as a function of the electrode dimension, exhibiting maximum values for smaller electrodes and smooth decay as the initial size of the electrode increases.…”

mentioning

confidence: 99%

“…A detailed description of the governing equations required to evaluate the buckling stress, along with the analytical solution, are provided in the SI. Because the thickness of the Cu foil is significantly smaller than the other two dimensions, we incorporated the effect of length scale to determine the deformation behavior accurately . The length scale here can be correlated to either the Cu thickness or the grain size along the thickness direction.…”

mentioning

confidence: 99%

Cell-Format-Dependent Mechanical Damage in Silicon Anodes

Rodrigues,

Rajendran,

Trask

et al. 2023

ACS Appl. Energy Mater.

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Strong binders can be counterproductive for silicon anodes. Here, we show that stresses from cycling Si-based electrodes can cause permanent stretching and wrinkling of the current collector. This deformation damages the electrode coating and accelerates cell aging due to the inactivation of Si domains and facilitation of Li plating. Interestingly, we demonstrate that the formation of wrinkles is size-dependent, being present in pouch cells but absent from coin cells. This size-dependent performance decay indicates that, in extreme cases, testing outcomes are highly dependent on scale and that the validation of battery materials may require testing at larger cell formats.

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