Effect of electron beam irradiation on the capacity fading of hydride-terminated silicon nanocrystal based anode materials for lithium ion batteries

Lee, Don-Sung; Choi, Young-Hwa; Jeong, Hyun‐Dam

doi:10.1016/j.jiec.2017.04.003

Cited by 16 publications

(9 citation statements)

References 48 publications

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“…Though cracks may continue to form, the irradiation-enhanced adhesion between the electrode and current collector can improve their electrochemical performance. [23][24][25] Of the energy materials known to form cracks or fractures Ge and Si in particular, are of interest. Ge and Si based electrodes promise high theoretical capacity, but their biggest limitation is due to the large volume change that causes significant stress in the electrode, which eventually leads to fragmentation and pulverization of electrode particles upon cycling.…”

Section: Interface Engineeringmentioning

confidence: 99%

“…Interfacial modification of EES materials is accomplished by using irradiation to improve adhesion at interfacial regions, and mitigate undesirable cycling-induced stress. [23][24][25] Irradiation has also been utilized as a specific synthesis technique in various studies, and examples of this application will be discussed in a subsequent section.…”

Section: Introductionmentioning

confidence: 99%

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Radiation effects on materials for electrochemical energy storage systems

Olsen,

Koroni,

Liu

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Interface Engineeringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radiation effects on materials for electrochemical energy storage systems

Olsen,

Koroni,

Liu

et al. 2023

Phys. Chem. Chem. Phys.

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“…The synthetic procedures of silica nanoparticles (SiO 2 NPs) and oxide-coated silicon nanocrystals (Si NCs@SiO x ) are described in the Supporting Information. , Freestanding 4-bromostyryl and octyl co-capped Si QDs (4-Bs/Oct Si QDs) were prepared using borane-catalyzed hydrosilylation reaction between 1-bromo-4-ethynylbenzene/1-octene and hydride-terminated Si QDs (H-Si QDs). , The H-Si QDs were synthesized only from Si NCs@SiO x (0.5 g) via an etching reaction using a mixture of HF (20 mL), EtOH (20 mL), and distilled water (20 mL) for 2 h. After the completion of the etching process, H-Si QDs were extracted from the etching solution with toluene (3 × 30 mL). The H-Si QDs were isolated from the toluene by centrifugation at 12 000 rpm for 10 min and redispersed in anhydrous toluene.…”

Section: Experimental Sectionmentioning

confidence: 99%

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

et al. 2020

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π-Conjugated molecule bridged silicon quantum dots (Si QDs) cluster was prepared by Sonogashira C−C cross-coupling reaction between 4-bromostyryl and octyl co-capped Si QDs (4-Bs/Oct Si QDs) and 1,4-diethynylbenzene. The surface chemical structure, morphology, and chemical composition of the Si QD cluster were confirmed by Fourier transform infrared spectroscopy, field emission transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Lithiumion batteries were fabricated using 4-Bs/Oct Si QD and Si QD clusters as anode materials to investigate the effect of QD clustering on the electrochemical performance. Compared with the 4-Bs/Oct Si QD electrode, the Si QD cluster exhibits improved electrochemical performance, such as a high initial discharge capacity of ∼1957 mAh/g and good cycling stability with ∼63% capacity retention following 100 cycles at a current rate of 200 mA/g when tested at the voltage window of 0.01−2.5 V. The improved electrochemical performance of the Si QD cluster is attributed to the π-conjugated molecules between the Si QDs and on the surface of Si QD cluster, which serve as a buffer layer to alleviate the mechanical stresses arising from the alloying reaction of Si with lithium and maintain the electrical conduits in the anode system.

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“…Based on previous studies [20,59], the slip shear stress t y is associated with dislocations and defect densities. For a single crystal, a rate-independent yield function, F(s, t y ) [14,26,[28][29][30][31][32]36,60] can be written as…”

Section: Yield Functionmentioning

confidence: 99%

“…During deep space exploration, however, LIBs suffer severe irradiation effects, high radiation field and post-nuclear accident scenario [28][29][30][31][32]. Qiu et al [33] and Samin et al [34] characterised the surface morphologies of cathode materials before and after neutron and gamma-ray irradiation with a growing particle size and reported that irradiation causes disordering of crystal structures in a post-irradiation sample, which further results in capacity loss of batteries.…”

Section: Introductionmentioning

confidence: 99%

A constitutive model coupling irradiation with two-phase lithiation for lithium-ion battery electrodes

Xie

Wang

et al. 2019

Philosophical Magazine

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When lithium-ion batteries serve in extreme environments like space, severe irradiation might induce significant decay of the electrochemical performances and mechanical properties. In this paper, an electrochemical-irradiated constitutive model is proposed to explore the evolution of dislocation, defect and stress in electrodes during a twophase lithiation process. The results from the analytic formulation and finite difference calculations show that, as Li intercalation proceeding, the hoop stress in the surface of a spherical particle converts from compression into tension because the large lithiation strain and plastic yielding at the front pushes out the material behind it. And the plastic flow resistance continuously increases with increasing irradiation dose result from the impediment of a defect to dislocation glide. There is a clear peak in the distribution of stress at yielding locations due to the competition between dislocations multiplication and defects annihilation. The model is meaningful for thoroughly understanding the micro-mechanism of lithiation deformation and provides a guideline for predicting their mechanical behaviours of lithium-ion batteries in unconventional environment.

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Effect of electron beam irradiation on the capacity fading of hydride-terminated silicon nanocrystal based anode materials for lithium ion batteries

Cited by 16 publications

References 48 publications

Radiation effects on materials for electrochemical energy storage systems

Radiation effects on materials for electrochemical energy storage systems

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

A constitutive model coupling irradiation with two-phase lithiation for lithium-ion battery electrodes

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