Ionic conductivity of microporous titanosilicate ETS-10 and ion-exchanged M n+ -ETS-10 (where, M n+  = Li + , Na + , Mg 2+ , Zn 2+ , Ca 2+ ) thin films prepared by secondary growth method

Galioglu, Sezin; Çam, İbrahim; Akata, Burcu

doi:10.1016/j.micromeso.2017.05.018

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…This is ultimately to elucidate the suitability of these chabazites as potential gas selective/sensing materials, for example in ionic conductivity based gas sensors [27]. In particular, this work utilizes impedance spectroscopy, a technique which has been previously used to investigate longrange ionic conductivity of microporous materials and to screen porous materials for sensing applications, with a focus on the alternating current (AC) conductivity, permittivity and phase angle of these chabazites, over a temperature range of 30 °C to 710 °C [28,29]. It should be noted that has been previously established, that neither the Si/Al ratio, nor the diameter of crystallites would result in the observed differences in conductivity of these zeolites [21,30,31] A 2 g mass of the as-synthesized chabazite was then ion-exchanged with either 1 M KCl solution (80 mL), 1 M CsCl solution (80 mL) or 1 M ZnCl 2 solution (40 mL) at 70 °C with stirring for 24 h to produce the K, Cs and Zn ion-exchanged CHA zeolites respectively.…”

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confidence: 99%

Understanding the AC conductivity and permittivity of trapdoor chabazites for future development of next-generation gas sensors

Bordeneuve

Wales

Physick

et al. 2018

Microporous and Mesoporous Materials

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Synthetic K + chabazite (KCHA), Cs + chabazite (CsCHA) and Zn 2+ chabazite (ZnCHA) have been synthesized and investigated in order to relate the differences in their crystalline structures to their thermal stability, moisture content and frequency dependent alternating current (AC) conductivity, permittivity and phase angle at a range of temperatures. The materials are shown to exhibit the universal dielectric response, which is typical of materials consisting of both conductive and insulating regions. Due to the presence of porosity the three chabazites were hydrated significantly at room temperature and so the dehydrated state was achieved by heating the chabazites to high temperatures to ensure that all different energetic types of water were removed. Cation migration activation energies for KCHA (0.66 ± 0.10) eV, CsCHA (0.88 ± 0.01) eV and ZnCHA (0.90 ± 0.01) eV were determined during the cooling cycle from the fully dehydrated state to provide an accurate measurement the activation energies. Good thermal stability of the materials was observed up to 710 °C and below 200 °C the electrical properties can be strongly influenced by hydration level. Overall, it was determined that when either hydrated or dehydrated, KCHA had the highest conductivity and lowest cation migration activation energy of the three studied chabazites and thus has the most promising electrical properties for potential use as a gas sensing material in next-generation electrical-based gas sensors.

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Section: Position Of Caption For Figure 1a and 1bmentioning

confidence: 99%

Understanding the AC conductivity and permittivity of trapdoor chabazites for future development of next-generation gas sensors

Bordeneuve

Wales

Physick

et al. 2018

Microporous and Mesoporous Materials

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Recent Advances in Vanadium‐Based Aqueous Rechargeable Zinc‐Ion Batteries

Liu

Lee

Kim

et al. 2020

Advanced Energy Materials

320

201

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Aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention as promising next‐generation power sources because of the abundance, low cost, eco‐friendliness, and high security of Zn resources. Recently, vanadium‐based materials as cathodes in AZIBs have gained interest owing to their rich electrochemical interaction with Zn2+ and high theoretical capacity. However, existing AZIBs are still far from meeting commercial requirements. This article summarizes recent advances in the rational design of vanadium‐based materials toward AZIBs. In particular, it highlights various tactics that have been reported to increase the intercalation space, structural stability, and the diffusion ability of the guest Zn2+, as well as explores the structure‐dependent electrochemical performance and the corresponding energy storage mechanism. Furthermore, this article summarizes recent achievements in the optimization of aqueous electrolytes and Zn anodes to resolve the issues that remain with Zn anodes, including dendrite formation, passivation, corrosion, and the low coulombic efficiency of plating/stripping. The rationalization of these research findings can guide further investigations in the design of cathode/anode materials and electrolytes for next‐generation AZIBs.

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Promotional effects of Cu and Zn in hydrotalcite-derived methane tri-reforming catalyst

Kumar

Pant

2020

Applied Surface Science

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Ionic conductivity of microporous titanosilicate ETS-10 and ion-exchanged M n+ -ETS-10 (where, M n+ = Li + , Na + , Mg 2+ , Zn 2+ , Ca 2+ ) thin films prepared by secondary growth method

Cited by 5 publications

References 24 publications

Understanding the AC conductivity and permittivity of trapdoor chabazites for future development of next-generation gas sensors

Understanding the AC conductivity and permittivity of trapdoor chabazites for future development of next-generation gas sensors

Recent Advances in Vanadium‐Based Aqueous Rechargeable Zinc‐Ion Batteries

Promotional effects of Cu and Zn in hydrotalcite-derived methane tri-reforming catalyst

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