Sodium hexafluorophosphate mediated enhancement of electrical and electrochemical properties of poly(vinyl alcohol)-chitosan solid polymer electrolytes for EDLCs
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F25%3A63596798" target="_blank" >RIV/70883521:28610/25:63596798 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2025/ra/d5ra02897c" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/ra/d5ra02897c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d5ra02897c" target="_blank" >10.1039/d5ra02897c</a>
Alternative languages
Result language
angličtina
Original language name
Sodium hexafluorophosphate mediated enhancement of electrical and electrochemical properties of poly(vinyl alcohol)-chitosan solid polymer electrolytes for EDLCs
Original language description
A free-standing, flexible and biodegradable biopolymer electrolyte (BPE) derived from a poly(vinyl alcohol) (PVA)-chitosan (CS) blend immobilizing sodium hexafluorophosphate (NaPF6) salt was fabricated via solution casting method. The effect of salt concentration on the structural, electrical, and electrochemical properties of the electrolyte was systematically investigated. X-ray diffraction (XRD) and Fourier-transform infrared (FTIR) spectroscopy were used to ascertain the microstructural changes in the polymer matrix including the complexation of PVA, CS, and NaPF6. Electrochemical impedance spectroscopy (EIS) measurements revealed that the BPE containing 40 wt% NaPF6 exhibited the highest conductivity (6.94 ± 0.04) × 10−5 S cm−1, which was three-order enhancement over the pristine system. The ion transport behaviour, interpreted through the Schütt and Gerdes (S-G) model, revealed that the ionic conductivity of the SPE system is strongly influenced by both the concentration of charge carriers and their mobility. The electrolyte displayed a predominant ionic nature with an electrochemical stability window of ∼3.25 V. When incorporated into an Na-ion EDLC, the optimized electrolyte sample provided a specific capacitance of 42.65 F g−1, energy density of 5.4 W h kg−1, and power density of 95 W kg−1, as determined by galvanostatic charge-discharge (GCD) tests performed at 0.05 mA g−1
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
RSC Advances: an international journal to further the chemical sciences
ISSN
2046-2069
e-ISSN
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Volume of the periodical
15
Issue of the periodical within the volume
30
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
24350-24366
UT code for WoS article
001525750200001
EID of the result in the Scopus database
2-s2.0-105010274773