Modeling the delamination of amorphous-silicon thin film anode for lithium-ion battery

Pal, Siladitya; Damle, Sameer S.; Patel, Siddharth; Datta, Moni Kanchan; Kumta, Prashant N.; Maiti, Spandan

doi:10.1016/j.jpowsour.2013.06.089

Cited by 82 publications

(42 citation statements)

References 29 publications

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“…To solve these issues, especially the volume change of Si anodes during electrochemical cycling, several researchers have investigated ways to accommodate this volume change by using nanostructured Si, including nanotubes, nanowires, nanocomposite, thin films, and nanoporous structures . These nanostructured Si‐based anodes exhibited improved cyclic performances due to the many open channels that act as ideal volume expansion buffer.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Silicon Anodes for High‐Performance Lithium‐Ion Batteries

Rahman

Song

Bhatt

et al. 2015

Adv Funct Materials

288

167

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Despite the high theoretical capacity of Si anodes, the electrochemical performance of Si anodes is hampered by severe volume changes during lithiation and delithiation, leading to poor cyclability and eventual electrode failure. Nanostructured silicon and its nanocomposite electrodes could overcome this problem holding back the deployment of Si anodes in lithium‐ion batteries (LIBs) by providing facile strain relaxation, short lithium diffusion distances, enhanced mass transport, and effective electrical contact. Here, the recent progress in nanostructured Si‐based anode materials such as nanoparticles, nanotubes, nanowires, porous Si, and their respective composite materials and fabrication processes in the application of LIBs have been reviewed. The ability of nanostructured Si materials in addressing the above mentioned challenges have been highlighted. Future research directions in the field of nanostructured Si anode materials for LIBs are summarized.

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Section: Introductionmentioning

confidence: 99%

Nanostructured Silicon Anodes for High‐Performance Lithium‐Ion Batteries

Rahman

Song

Bhatt

et al. 2015

Adv Funct Materials

288

167

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Section: Electrochemical Characterization Of Pedsi On Cumentioning

confidence: 99%

“…Electrodeposition being a controlled method involving atomistic adsorption, diffusion and reduction of ions followed by crystallization of atoms, improves the adhesion of thin film to the Cu substrate contributing to mechanical stability of the films. Hence, the electrodeposited films show better performance and stable cycling as compared to sputtered silicon films which fail due to delamination of the films at the substrate-silicon interface [7,55]. A summary of XPS composition analysis of the Si thin films deposited at different frequencies along with depth profiling (increase in etching time) of the thin film and the calculated FIR loss as A summary of XPS composition analysis of the Si thin films deposited at different frequencies along with depth profiling (increase in etching time) of the thin film and the calculated FIR loss as per the reversible reaction of Si to form metastable Li 3.75 Si [56,57] and the irreversible reaction of Li with oxygen to form Li 2 O as shown in Figure 5 is given below.…”

Section: Electrochemical Characterization Of Pedsi On Cumentioning

confidence: 99%

Pulsed Current Electrodeposition of Silicon Thin Films Anodes for Lithium Ion Battery Applications

et al. 2017

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Electrodeposition of amorphous silicon thin films on Cu substrate from organic ionic electrolyte using pulsed electrodeposition conditions has been studied. Scanning electron microscopy analysis shows a drastic change in the morphology of these electrodeposited silicon thin films at different frequencies of 0, 500, 1000, and 5000 Hz studied due to the change in nucleation and the growth mechanisms. These electrodeposited films, when tested in a lithium ion battery configuration, showed improvement in stability and performance with an increase in pulse current frequency during deposition. XPS analysis showed variation in the content of Si and oxygen with the change in frequency of deposition and with the change in depth of these thin films. The presence of oxygen largely due to electrolyte decomposition during Si electrodeposition and the structural instability of these films during the first discharge-charge cycle are the primary reasons contributing to the first cycle irreversible (FIR) loss observed in the pulse electrodeposited Si-O-C thin films. Nevertheless, the silicon thin films electrodeposited at a pulse current frequency of 5000 Hz show a stable capacity of~805 mAh·g −1 with a fade in capacity of~0.056% capacity loss per cycle (a total loss of capacitỹ 246 mAh·g −1 ) at the end of 500 cycles.

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“…Motivated by this objective, herein we report the effect of the geometry of the active material in the Si-CNT heterostructures on its mechanical integrity during a single electrochemical cycle. We have resorted to a thermodynamically consistent theoretical framework and its computational counterpart recently developed by us [31][32][33]. Our methodology considers alloying induced stress and consequent mechanical failure of the electrode material.…”

Section: Introductionmentioning

confidence: 99%