Ion dynamics and positron annihilation studies on polymer ceramic composite electrolyte system (PVA/NaClO4/Y2O3): Application in electrochemical devices

Chavan, Chetan; Bhajantri, R. F.; Bulla, Soumya S.; H.B, Ravikumar; Raghavendra, M.; Sakthipandi, K.; K, Yogesh Kumar; B.P, Prasanna

doi:10.1016/j.ceramint.2022.03.058

Cited by 21 publications

(5 citation statements)

References 76 publications

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“…The number density of charge carriers ( n ) can be obtained by using below Equation (8)

n = \frac{σ}{italicμe} .

Using Equation (9) 50 below, one can determine the cation's mobility.

μ_{+} = μ \times t_{+},

where

μ_{+}

t_{+}

are defined as the cation mobility and cation transport number. Here is an Equation (10) 52,54 that separates the respective anion mobility.

μ_{-} = μ - μ_{+},

Table 5 records the results of cations and anions that were estimated.…”

Section: Resultsmentioning

confidence: 99%

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Investigations on anomalous behavior of ionic conductivity in NaPF₆ salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Chavan

Bhajantri

Cyriac

et al. 2023

Polymers for Advanced Techs

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This article investigates the influence of NaPF6 salt content (0–30 wt.% in a varying interval of 5 wt.%) on the structural, electrical, and biodegradable properties of HEC/NaPF6 solid biopolymer electrolyte (SBE) films. The interaction of salt with the HEC polymer matrix is confirmed by FTIR and SEM studies. The elemental composition and mapping confirm the appearance of NaPF6 moieties in the HEC polymer matrix. XRD deconvolution reveals that HEC samples with 20 wt.% (H4) and 10 wt.% of salt (H2) have a significantly lower crystallinity index than pure HEC polymer. The H2 and H4 samples show the highest room temperature conductivity values (1.62 × 10−5 and 1.13 × 10−5 S cm−1, respectively) among all other prepared samples since carrier concentration influences the ionic conductivity and shares a similar order of conductivity. Thus, the H2 and H4 samples are employed as electrolyte separators in the sodium ion battery, and the results suggest that the H2‐based electrolyte system is more significant. Battery matrices like open circuit voltage (V), current density (μA cm−2), power density (mW kg−1), energy density (Wh kg−1) and discharge capacity (μA h−1) were calculated and found to be 2.48, 5.49, 44.60, 1.69, and 71.05, respectively for H2 electrolyte based cell. Wagner polarization reveals that H2 and H4 constitute the predominant charge carriers (ions) with total ion transference numbers of ⁓0.98 and ⁓0.99, respectively. To evaluate sample degradability, H2 and H4 samples were subjected to 20 and 5‐day biodegradation processes, during which the polymers completely (100%) broke down.

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“…The number density of charge carriers ( n ) can be obtained by using below Equation (8)

n = \frac{σ}{italicμe} .

Using Equation (9) 50 below, one can determine the cation's mobility.

μ_{+} = μ \times t_{+},

where

μ_{+}

t_{+}

are defined as the cation mobility and cation transport number. Here is an Equation (10) 52,54 that separates the respective anion mobility.

μ_{-} = μ - μ_{+},

Table 5 records the results of cations and anions that were estimated.…”

Section: Resultsmentioning

confidence: 99%

“…where μ þ , t þ are defined as the cation mobility and cation transport number. Here is an Equation (10) 52,54 that separates the respective anion mobility.…”

Section: Transference Number Measurements (Tnm)mentioning

confidence: 99%

Investigations on anomalous behavior of ionic conductivity in NaPF₆ salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Chavan

Bhajantri

Cyriac

et al. 2023

Polymers for Advanced Techs

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“…The mainstream solution to this problem is to use ceramic materials as additives or in-lls and polymers such as PVA and PE to enhance their mechanical properties. 79,80 Chavan et al 81 studied a PVA-based polymer ceramic electrolyte membrane with NaClO 4 and Y 2 O 3 as nano-llers with great ame retardant performance. The ionic conductivity of this membrane reached 3.25 Â 10 À4 S cm À1 , and its electrochemical stability window was as high as 3 V approximately.…”

Section: Solid Polymer Electrolytes (Spes)mentioning

confidence: 99%

Challenges for large scale applications of rechargeable Zn–air batteries

et al. 2022

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“…26 PVA has also been broadly used in various applications by paper industries, synthetic ber, textile industries, contact lens, binder industries and coating due to its solubility in water, excellent chemical and physical properties, excellent lm formation, and good chemical resistance. [27][28][29] PVA is made up of a carbon chain network with hydroxyl groups of semi-crystalline nature that contribute to the development of polymer complexes by providing a source of hydrogen bonding. 30 Among various rare earth materials, Y 2 O 3 NPs have recently received a lot of attention with several promising physical properties, such as its crystallographic stability up to 2325 °C (melting point of Y 2 O 3 NPs is 2450 °C), high thermal conductivity (0.13 W cm −1 K −1 ), high mechanical strength, and large optical band gap (5.5 eV).…”

Section: Introductionmentioning

confidence: 99%

A novel flexible CO₂ gas sensor based on polyvinyl alcohol/yttrium oxide nanocomposite films

Kumar,

Thangamani,

Karthik

et al. 2024

RSC Adv.

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Ion dynamics and positron annihilation studies on polymer ceramic composite electrolyte system (PVA/NaClO4/Y2O3): Application in electrochemical devices

Cited by 21 publications

References 76 publications

Investigations on anomalous behavior of ionic conductivity in NaPF₆ salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Investigations on anomalous behavior of ionic conductivity in NaPF₆ salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Challenges for large scale applications of rechargeable Zn–air batteries

A novel flexible CO₂ gas sensor based on polyvinyl alcohol/yttrium oxide nanocomposite films

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Ion dynamics and positron annihilation studies on polymer ceramic composite electrolyte system (PVA/NaClO4/Y2O3): Application in electrochemical devices

Cited by 21 publications

References 76 publications

Investigations on anomalous behavior of ionic conductivity in NaPF6 salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Investigations on anomalous behavior of ionic conductivity in NaPF6 salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Challenges for large scale applications of rechargeable Zn–air batteries

A novel flexible CO2 gas sensor based on polyvinyl alcohol/yttrium oxide nanocomposite films

Contact Info

Product

Resources

About

Investigations on anomalous behavior of ionic conductivity in NaPF₆ salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

Investigations on anomalous behavior of ionic conductivity in NaPF₆ salt loaded hydroxyethyl cellulose biodegradable polymer electrolyte for energy storage applications

A novel flexible CO₂ gas sensor based on polyvinyl alcohol/yttrium oxide nanocomposite films