Low-temperature synthesis of a green material for lithium-ion batteries cathode

Mousavi, Aliyar; Bensalem, A.; Gee, Becky

doi:10.1080/17518251003619184

Cited by 6 publications

(5 citation statements)

References 13 publications

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“…While the main threats to human health from heavy metals are associated with exposure to Pb, Cd, and Hg (Mousavi et al, 2010), Cd has historically had a relatively low profile compared to Hg and lead (Campbell, 2006). In light of the fact that little attention has been given to Cd as an environmental pollutant, further research on rice contamination by Cd is necessary.…”

Section: Resultsmentioning

confidence: 99%

“…For example, the United States Environmental Protection Agency (US EPA) has set an enforceable regulation for Cd, called a maximum contaminant level (MCL), in drinking water at 0.005 mg/L or 5 ppb (US EPA, ). In terms of alternatives to Cd-containing products, considering that rechargeable Ni-Cd batteries are where Cd compounds are mainly used (Mousavi et al, 2010), it is appropriate to say that battery technology has been in need of improvement for environmental friendliness and safety (Mousavi et al, 2010). The use of heavy metals in the battery technology can be reduced by using green materials such as lithium iron phosphates, which are used as cathode materials in a category of rechargeable lithium batteries (Mousavi et al, 2010).…”

Section: Environmental Management and Socioeconomic Considerationsmentioning

confidence: 99%

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Cadmium in Rice: Disease and Social Considerations

Besante

Niforatos

Mousavi

2011

Environmental Forensics

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Section: Resultsmentioning

confidence: 99%

Section: Environmental Management and Socioeconomic Considerationsmentioning

confidence: 99%

Cadmium in Rice: Disease and Social Considerations

Besante

Niforatos

Mousavi

2011

Environmental Forensics

Self Cite

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“…LiF is known to be the most typical reduction product of the FSI salt anions , and a dominant SEI component , in most electrolyte formulations. The broad peak from 7 Li spectra may also overlap with signals from other lithiated compounds including Li 4 SiO 4 (−1 to 2.5 ppm), LiOH (0.4 ppm for LiOH·H 2 O), Li 2 S (2.3 ppm), and Li 2 SO 4 (0 ppm), among others. Some of these products are a result of FSI anion decomposition, which supports our findings from STEM-EDX and is also in good agreement with our previously reported XPS results .…”

Section: Results and Discussionmentioning

confidence: 99%

Tuning the Formation and Structure of the Silicon Electrode/Ionic Liquid Electrolyte Interphase in Superconcentrated Ionic Liquids

Araño

Begić

Chen

et al. 2021

ACS Appl. Mater. Interfaces

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The latest advances in the stabilization of Li/Na metal battery and Li-ion battery cycling has highlighted the importance of electrode/electrolyte interface (Solid Electrolyte Interphase -SEI) and its direct link to cycling behaviour. In order to understand the structure and properties of the SEI, we used combined experimental and computational studies to unveil how the ionic liquid (IL) cation nature and salt concentration impact the silicon/IL electrolyte interfacial structure and the formed SEI. The nature of IL cation is found to be important to control the electrolyte reductive decomposition that influences the SEI composition and properties, and the reversibility of the Li-Si alloying process. Also, increasing the Li salt concentration changes the interface structure for a favorable and less resistive SEI. The most promising interface for the Si-based battery was found to be in P 1222 FSI with 3.2 m LiFSI which leads to an optimal SEI after 100 cycles in which LiF and trapped LiFSI are the only distinguishable lithiated and fluorinated products detected. This study shows a clear link between the nano-structure of the IL electrolyte near the electrode surface, the resulting SEI, and the Si negative electrode cycling performance. More importantly, this work will aid rational design of Si-based Li-ion batteries using IL electrolytes in an area that has so far been neglected, reinforcing the benefits of superconcentrated electrolyte systems.

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“…The signal consists in a prominent broad component and a sharp constituent in most cases. The broad contribution may contain several overlapping peaks from various lithiated species which may include LiF, Li 2 O, Li 2 S, LiOH, Li 4 SiO 4 , Li 2 SO 4 , and LiFSI. ,,− The 19 F NMR spectra in Figure S11 confirm the presence of LiFSI and LiF, which appear at approximately 54 and −204 ppm, respectively. The 19 F LiFSI signal contains sharp components that are attributed to mobile species and broad components that are assigned to confined products.…”

Section: Resultsmentioning

confidence: 90%

Understanding the Capacity Decay of Si/NMC622 Li-Ion Batteries Cycled in Superconcentrated Ionic Liquid Electrolytes: A New Perspective

Araño

Gautier

Kerr

et al. 2022

ACS Appl. Mater. Interfaces

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Silicon-containing Li-ion batteries have been the focus of many energy storage research efforts because of the promise of high energy density. Depending on the system, silicon generally demonstrates stable performance in half-cells, which is often attributed to the unlimited lithium supply from the lithium (Li) metal counter electrode. Here, the electrochemical performance of silicon with a high voltage NMC622 cathode was investigated in superconcentrated phosphonium-based ionic liquid (IL) electrolytes. As a matter of fact, there is very limited work and understanding of the full cell cycling of silicon in such a new class of electrolytes. The electrochemical behavior of silicon in the various IL electrolytes shows a gradual and steeper capacity decay, compared to what we previously reported in half-cells. This behavior is linked to a different evolution of the silicon morphology upon cycling, and the characterization of cycled electrodes points toward mechanical reasons, complete disconnection of part of the electrode, or internal mechanical stress, due to silicon and Li metal volume variation upon cycling, to explain the progressive capacity fading in full cell configuration. An extremely stable solid electrolyte interphase (SEI) in the full Li-ion cells can be seen from a combination of qualitative and quantitative information from transmission electron microscopy, X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and magic angle spinning nuclear magnetic resonance. Our findings provide a new perspective to full cell interpretation regarding capacity fading, which is oftentimes linked almost exclusively to the loss of Li inventory but also more broadly, and provide new insights into the impact of the evolution of silicon morphology on the electrochemical behavior.

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Low-temperature synthesis of a green material for lithium-ion batteries cathode

Cited by 6 publications

References 13 publications

Cadmium in Rice: Disease and Social Considerations

Cadmium in Rice: Disease and Social Considerations

Tuning the Formation and Structure of the Silicon Electrode/Ionic Liquid Electrolyte Interphase in Superconcentrated Ionic Liquids

Understanding the Capacity Decay of Si/NMC622 Li-Ion Batteries Cycled in Superconcentrated Ionic Liquid Electrolytes: A New Perspective

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