Raman spectroscopic study of glassy aqueous zinc halide solutions

Kanno, H.; Hiraishi, Jiro

doi:10.1002/jrs.1250090206

Cited by 40 publications

(25 citation statements)

References 22 publications

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“…However,t he reactiono fH Iw ithZ nO in the CH 3 NH 3 PbI 3 /ZnO system could result in the formation of ZnI 2 [Eq. (3)] or related zinc iodide species [38]…”

Section: Studiesonthe Degradationm Echanismmentioning

confidence: 83%

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Stability Comparison of Perovskite Solar Cells Based on Zinc Oxide and Titania on Polymer Substrates

et al. 2016

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Device scale-up and long-term stability constitute two major hurdles that the emerging perovskite solar technology will have to overcome before commercialization. Here, a comparative study was performed between ZnO and TiO2 electron-selective layers, two materials that allow the low-temperature processing of perovskite solar cells on polymer substrates. Although the use of TiO2 is well established on glass substrates, ZnO was chosen because it can be readily printed at low temperature and offers the potential for the large-scale roll-to-roll manufacturing of flexible photovoltaics at a low cost. However, a rapid degradation of CH3 NH3 PbI3 was observed if it was deposited on ZnO, therefore, the influence of the perovskite film preparation conditions on its morphology and degradation kinetics was investigated. This study showed that CH3 NH3 PbI3 could withstand a higher temperature on TiO2 than ZnO and that TiO2-based perovskite devices were more stable than their ZnO analogues.

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“…However,t he reactiono fH Iw ithZ nO in the CH 3 NH 3 PbI 3 /ZnO system could result in the formation of ZnI 2 [Eq. (3)] or related zinc iodide species [38]…”

Section: Studiesonthe Degradationm Echanismmentioning

confidence: 83%

“…However, the reaction of HI with ZnO in the CH 3 NH 3 PbI 3 /ZnO system could result in the formation of ZnI 2 [Eq. (3)] or related zinc iodide species and H 2 O, whereas TiO 2 is inert to HI.

ZnO_{(s)} + 2 HI_{(aq)} ⇌ ZnI_{2 (aq)} + H_{2} O

…”

Section: Resultsmentioning

confidence: 99%

Stability Comparison of Perovskite Solar Cells Based on Zinc Oxide and Titania on Polymer Substrates

et al. 2016

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“…This is the result of the structure breaking effect of Cl − on the H bonding network between water molecules . 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).…”

mentioning

confidence: 98%

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

Chen

Matsumoto

Kubota

et al. 2019

Advanced Energy Materials

152

128

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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.

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“…Hence, the narrow-band peak can be separated from the broadband contribution, which is present in both spectra, by calculating the difference. The peak can be assigned to vibrational modes of ZnBr2, ZnBr3and ZnBr4 2complexes [9], which were not resolved by our experiment. In our experiment, an increase of the temporal width of the stretched pulse leads to a higher spectral resolution but reduces the signal-to-noise ratio (see [10]).…”

Section: Resultsmentioning

confidence: 57%

Polarization dependence of chirp-induced nonlinear Raman scattering spectroscopy of aqueous ions and organic liquids in the THz regime

Funkner

Nakae

Niehues

et al. 2015

2015 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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We present polarization dependent measurements of coherent Raman spectra of liquids with chirped ps-pulses in the THz regime. In order to detect the coherent Raman spectrum we made use of a, previously introduced [1, 2], nonlinear pump and probe scheme involving an experimental technique called "spectral focusing". As a result, we are able to resolve spectrally stimulated Raman gain and inverse Raman scattering. Our experiment covers the entire THz range from 10 THz down to 100 GHz. Thereby, we show that different spectral features of aqueous ions and organic liquids can be distinguished using different polarization states of the pump beam.

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Raman spectroscopic study of glassy aqueous zinc halide solutions

Cited by 40 publications

References 22 publications

Stability Comparison of Perovskite Solar Cells Based on Zinc Oxide and Titania on Polymer Substrates

Stability Comparison of Perovskite Solar Cells Based on Zinc Oxide and Titania on Polymer Substrates

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

Polarization dependence of chirp-induced nonlinear Raman scattering spectroscopy of aqueous ions and organic liquids in the THz regime

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