Effect of Oxygen Flow Rate, Post-annealing Temperature, and Different Electrolyte Concentrations on WO3 Thin Films Deposited by DC Magnetron Sputtering For Electrochromic Applications

Kumar, K. Naveen; Reddy, G. V. Ashok; Sattar, Sheik Abdul; Jafri, R. Imran; Premkumar, R.; Muthukrishnan, M.; Ahamed, A. Asrar; Meera, M. R.; Prakash, Nunna Guru; Tighezza, Ammar M.; Ko, Tae Jo

doi:10.1007/s11664-024-11000-4

Cited by 1 publication

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“…Researchers are also exploring ways to address challenges such as improving the mechanical strength of biopolymers, expanding their range of applications, and scaling up production methods [6]. As fossil fuel reserves continue to diminish rapidly, there is a growing reliance on renewable energy sources for electrochemical applications [7].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of sodium-ion conducting biopolymer electrolyte membrane based on agar-agar with sodium nitrite for primary Na-ion battery.

Sowmiya,

Shanthi

2024

Preprint

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Utilizing a solution-casting approach with water as the solvent, agar-agar solid biopolymer membranes incorporating sodium nitrite at various molecular ratios were successfully synthesized. Characterization of these membranes was conducted using techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), AC Impedance techniques, Transference number measurements, and Linear sweep voltammetry (LSV). XRD analysis revealed the amorphous nature of the membranes, while FTIR elucidated the complexation behavior between the polymer and salt. DSC analysis indicated a decrease in the glass transition temperature with increasing salt concentrations up to a specific value. TGA was employed to assess the thermal stability of the polymer electrolyte membrane. The conductivity of pure agar-agar was found to be 3.12 X 10− 7 S cm− 1, and the maximum ionic conductivity, observed at room temperature, reached 5.07 X 10− 3 S cm− 1 for the membrane with a composition of 30% agar: 70% NaNO2. Transference number measurements, conducted using Wagner's DC polarization technique, provided insights into the nature of charge transport within the membrane. The electrochemical stability, determined through linear sweep voltammetry, was observed to be 2.8 V. Furthermore, the highest conductivity polymer electrolyte was employed in the fabrication of a primary sodium ion battery, incorporating two types of cathodes- V2O5 and MnO2. The resulting batteries exhibited open circuit voltages of 3.02 and 2.69 for V2O5 and MnO2 cathodes, respectively.

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Section: Introductionmentioning

confidence: 99%