Reference Raman spectra of synthesized CaCl2 · nH2O solids (n = 0, 2, 4, 6)

Uriarte, Lucas M.; Dubessy, Jean; Boulet, Pascal; Baonza, Valentı́n G.; Bihannic, Isabelle; Robert, Pascal

doi:10.1002/jrs.4730

Cited by 34 publications

(27 citation statements)

References 24 publications

(41 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, a band assigned to the stretching mode of lower chloro‐complexes of Zn 2+ (e.g., [ZnCl 3 ] − ) appears around 330 cm −1 as a shoulder overlapping the predominant [ZnCl 4 ] 2− band. These observations are in qualitative agreement with previous measurements and directly indicate that the bulk water nature is diminished in the ZnCl 2 concentrated states ( n = 4, 3, 2.33). Consequently, the Zn surface chemistry and double‐layer structure can be tailored by controlling the ZnCl 2 content, which leads to the favorable deposit morphology of Zn .…”

supporting

confidence: 93%

A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

Chen

Matsumoto

Kubota

et al. 2019

Advanced Energy Materials

142

128

View full text Add to dashboard Cite

Aqueous Zn‐based batteries are attracting extensive interest because of their economic feasibility and potentially high energy density. However, poor rechargeability of Zn anode in conventional electrolytes resulting from dendrite formation and self‐corrosion hinders their practical implementation. Herein, a Zn molten hydrate composed of inorganic Zn salt and water is demonstrated as an advantageous electrolyte for solving these issues. In this electrolyte, dendrite‐free Zn deposition/dissolution reaction with a high Coulombic efficiency (≈99%) as well as long‐term stability, free from CO2 poisoning are realized. The resultant Zn–air cell exhibits a reversible capacity of 1000 mAh g(catalyst)−1 over 100 cycles at 30 °C. Combined with the intrinsic safety associated with aqueous chemistry and cost benefit of the raw material, the present Zn–air battery makes a strong candidate for large‐scale energy storage.

show abstract

supporting

confidence: 93%

A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

Chen

Matsumoto

Kubota

et al. 2019

Advanced Energy Materials

142

128

View full text Add to dashboard Cite

show abstract

“…We roughly estimate the ratio of Si:Cl to be 6.7:1, agreeing well with a prior report; 40 however, it is unclear if the presence of Cl solely arises from SiCl or if intercalated HCl also contributes to the Cl signal. The presence of residual HCl or CaCl2•xH2O is not observed in Raman 71 or FTIR ( Figure S18). Table S2 (Table S3) for complete Raman (FTIR) peak assignments.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Silicene, Siloxene, or Silicane? Revealing the Structure and Optical Properties of Silicon Nanosheets Derived from Calcium Disilicide

et al. 2019

View full text Add to dashboard Cite

Si-nanosheets (Si-NSs) have recently attracted considerable attention due to their potential as nextgeneration materials for electronic, optoelectronic, spintronic, and catalytic applications. Even though monolayer Si-NSs were first synthesized over 150 years ago via topotactic deintercalation of CaSi2, there is a lack of consensus within the literature regarding the structure and optical properties of this material. Herein, we provide conclusive evidence of the structural and chemical properties of Si-NSs produced by the deintercalation of CaSi2 with cold (~-30 °C) aqueous HCl, and characterize their optical properties. We use a wide range of techniques, including XRD, FTIR, Raman, solid-state NMR, SEM, TEM, EDS, XPS, diffuse reflectance absorbance, steady-state photoluminescence, time-resolved photoluminescence, and thermal decomposition; combined together, these techniques enable unique insight into the structural and optical properties of the Si-NSs. Additionally, we support the experimental findings with density functional theory (DFT) calculations to simulate FTIR, Raman, NMR, interband electronic transitions, and band structures. We determined that the Si-NSs consist of buckled Si monolayers that are primarily monohydride terminated. We characterize the nanosheets' optical properties, finding they have a band gap of ~2.5 eV with direct-like behavior and an estimated quantum yield of ~9%. Given the technological importance of Si, these results are encouraging for a variety of optoelectronic technologies, such as phosphors, light-emitting diodes, and CMOS-compatible photonics. Our results provide critical structural and optical properties to help guide the research community in integrating Si-NSs into optoelectronic and quantum devices. Disciplines Disciplines Materials Chemistry Comments Comments

show abstract

“…Uriarte and co‐workers reported Raman reference spectra for synthesized CaCl 2 · nH 2 O solids (n = 0, 2, 4, 6). The main Raman bands are given for their identification and will be helpful for ExoMars surface exploration in the next European Space Agency Exomars mission in 2016–2018 …”

Section: Solid‐state Studiesmentioning

confidence: 99%

“…The main Raman bands are given for their identification and will be helpful for ExoMars surface exploration in the next European Space Agency Exomars mission in 2016-2018. [111] Minerals Bartholomew et al described the role of intensity and instrument sensitivity in Raman mineral identification. The results of this study can be used to design data collection strategies.…”

Section: Single Crystalsmentioning

confidence: 99%

Recent advances in linear and non‐linear Raman spectroscopy. Part X

Nafie

2016

J Raman Spectroscopy

View full text Add to dashboard Cite

This review, published annually, provides an overview of advances in the field of Raman spectroscopy as found in papers published in the preceding calendar year in the Journal of Raman Spectroscopy (JRS), as well as in trends over the past decade across journals that have published papers important to the field of Raman spectroscopy. This information is obtained from statistical data on article counts obtained from Thomson Reuters ISI Web of Science Core Collection by year and by subfield of Raman spectroscopy. Additional information is gleaned from presentations at the XXV International Conference on Raman Spectroscopy (ICORS 2016) in Forteleza, Brazil in August 2016 and those featuring Raman scattering at SCIX 2016 organized by the Federation of Analytical Chemistry and Spectroscopy Societies (FACSS) in Minneapolis, Minnesota, USA in September 2016. Coverage is also provided for topics from the conference ECONOS 2016 held in April in Göteborg, Sweden and GeoRaman 2016 in June in Novosibirsk, Russia. Finally, papers published in JRS in 2015 are highlighted and arragned by topics at the frontier of Raman spectroscopy. From these various perspectives, it is clear that Raman spectroscopy continues to be a rapidly expanding field that provides sensitive photonic information of matter at the molecular level in an ever‐widening arena of novel applications. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

Reference Raman spectra of synthesized CaCl₂ · nH₂O solids (n = 0, 2, 4, 6)

Cited by 34 publications

References 24 publications

A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

Silicene, Siloxene, or Silicane? Revealing the Structure and Optical Properties of Silicon Nanosheets Derived from Calcium Disilicide

Recent advances in linear and non‐linear Raman spectroscopy. Part X

Contact Info

Product

Resources

About