Structural, electrical and ion transport properties of free-standing blended solid polymeric thin films

Arya, Anil; Sadiq, Mohd; Sharma, Annu

doi:10.1007/s00289-018-2645-y

Cited by 30 publications

(13 citation statements)

References 59 publications

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“…Dispersion of lithium salts prevents polymer chain re-organisation which resulting in a reduction of The interconnected fibrous links may create alternative pathways for ionic conduction. Similar links were observed for the SPE system using LiBOB as doping ions [36].…”

Section: Fesem Analysissupporting

confidence: 73%

“…This vibrational energy is able to counter the hydrostatic pressure of neighbouring atoms and enhances their segmental mobility [26]. Electrolytes with improved segmental mobility have more free volume around the polymer network which caused the expansion of mobile ions and consequently increase the ionic conductivity [36,80]. In addition, a bulky group of Bmim + also would disrupt the ion polymer linkages by creating more free volume and lower viscosity of the ionic liquid gives more flexibility to the polymer backbone in promoting conduction process [81].…”

Section: Conductivity At Elevated Temperaturementioning

confidence: 99%

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Structural, impedance and electrochemical double-layer capacitor characteristics of improved number density of charge carrier electrolytes employing potato starch blend polymers

Azli

Manan

Aziz

et al. 2020

Ionics

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Potato starch (PS)/graphene oxide (GO) blend-based solid polymer electrolyte has been doped with lithium trifluoromethanesulfonate (LiCF 3 SO 3 ) via casting method. Lithium-based system is further infused with ionic liquid, 1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) as a plasticizer to form a PS/GO/LiCF 3 SO 3 /[Bmim][Cl] electrolyte with improved conductivity characteristic. The ionic liquid-based polymer electrolyte PS/GO/LiCF 3 SO 3 /[Bmim][Cl] exhibits better physical properties based on structural characterisation and thermal analysis conducted. Values of linear sweep voltammetry (LSV) that evaluates the electrochemical potential window for salted and plasticized systems are 1.38 V and 1.92 V, respectively. Specific capacitance (C s ) values calculated from charge-discharge measurement and cyclic voltammetry (CV) for the plasticized system are higher compared with those for the salted system. From the galvanostatic charge-discharge analysis, the value of C s obtained for PS/GO/LiCF 3 SO 3 /[Bmim][Cl] is 37.9 F g −1 at 0.6 mA cm −2 current density. The results from CV and galvanostatic chargedischarge analysis confirm the suitability of PS/GO/LiCF 3 SO 3 and PS/GO/LiCF 3 SO 3 /[Bmim][Cl] for electrochemical doublelayer capacitor (EDLC) application.

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Section: Fesem Analysissupporting

confidence: 73%

Section: Conductivity At Elevated Temperaturementioning

confidence: 99%

Structural, impedance and electrochemical double-layer capacitor characteristics of improved number density of charge carrier electrolytes employing potato starch blend polymers

Azli

Manan

Aziz

et al. 2020

Ionics

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“…Similar experimental errors seem to responsible for the determination of the electronic constituents in the range 0.02 to 0.08 for various potassium ion-based systems [ 133 ]. On the other hand, the same method applied allowed Arya et al [ 134 ] to neglect the electronic contribution based on very similar results (t e = 0.01 to 0.05) yielding from the 20 mV polarization of PEO-PVP self-standing films. Similar in nature discrepancies were observed in [ 135 ] where an electronic contribution reaching 20% of the total sample current were astonishingly determined for a gel-like LiBF 4 electrolyte with the application of an unspecified polarization potential.…”

Section: Methodsmentioning

confidence: 99%

Transference Number Determination in Poor-Dissociated Low Dielectric Constant Lithium and Protonic Electrolytes

et al. 2021

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Whereas the major potential of the development of lithium-based cells is commonly attributed to the use of solid polymer electrolytes (SPE) to replace liquid ones, the possibilities of the improvement of the applicability of the fuel cell is often attributed to the novel electrolytic materials belonging to various structural families. In both cases, the transport properties of the electrolytes significantly affect the operational parameters of the galvanic and fuel cells incorporating them. Amongst them, the transference number (TN) of the electrochemically active species (usually cations) is, on the one hand, one of the most significant descriptors of the resulting cell operational efficiency while on the other, despite many years of investigation, it remains the worst definable and determinable material parameter. The paper delivers not only an extensive review of the development of the TN determination methodology but as well tries to show the physicochemical nature of the discrepancies observed between the values determined using various approaches for the same systems of interest. The provided critical review is supported by some original experimental data gathered for composite polymeric systems incorporating both inorganic and organic dispersed phases. It as well explains the physical sense of the negative transference number values resulting from some more elaborated approaches for highly associated systems.

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“…Another effective technique to develop new polymers with optimal properties is polymer blending. , The main benefits of using polymer blends include their low cost and the ease in which a new blend can be obtained simply by dissolving polymers in solvents or mixing them under high mechanical stress at elevated temperature. , The latter process does not require a solvent, which improves safety (no use of toxic solvents) and saves time (no evaporation). , The other clear advantage of using blends is the control gained over the polymer’s properties by varying the blend’s composition and nature …”

Section: Introductionmentioning

confidence: 99%

Effect of Li⁺ Affinity on Ionic Conductivities in Melt-Blended Nitrile Rubber/Polyether

Caradant

Lepage

Nicolle

et al. 2020

ACS Appl. Polym. Mater.

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Substituting flammable liquid electrolytes with solid polymer electrolytes (SPEs) presents a serious challenge in improving the safety of lithium-ion batteries. Even though SPEs are a safer choice, their ionic transport properties are still lower than those of their liquid counterparts (<10 −4 S•cm −1 at room temperature). Here, we report the preparation of a blend of polymers used as SPEs in lithium-ion batteries. Composed of an elastomer, hydrogenated nitrile butadiene rubber (HNBR), and poly(ethylene oxide) (PEO), this blend combines the high conductivity of PEO and the stable properties of HNBR and shows better flexibility than a pristine PEO SPE. It is worth noting that the addition of HNBR, coupled with the intrinsic LiTFSI salt concentration, also reduces the crystallinity and melting temperature of typical PEO-LiTFSI SPEs; this also explains the higher ionic conductivity at low temperature (1.18 × 10 −4 S•cm −1 at 40 °C). Given these initial results, we may conclude that this polymer blend is a promising candidate as an SPE for all solid-state lithium-ion batteries.

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Structural, electrical and ion transport properties of free-standing blended solid polymeric thin films

Cited by 30 publications

References 59 publications

Structural, impedance and electrochemical double-layer capacitor characteristics of improved number density of charge carrier electrolytes employing potato starch blend polymers

Structural, impedance and electrochemical double-layer capacitor characteristics of improved number density of charge carrier electrolytes employing potato starch blend polymers

Transference Number Determination in Poor-Dissociated Low Dielectric Constant Lithium and Protonic Electrolytes

Effect of Li⁺ Affinity on Ionic Conductivities in Melt-Blended Nitrile Rubber/Polyether

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Structural, electrical and ion transport properties of free-standing blended solid polymeric thin films

Cited by 30 publications

References 59 publications

Structural, impedance and electrochemical double-layer capacitor characteristics of improved number density of charge carrier electrolytes employing potato starch blend polymers

Structural, impedance and electrochemical double-layer capacitor characteristics of improved number density of charge carrier electrolytes employing potato starch blend polymers

Transference Number Determination in Poor-Dissociated Low Dielectric Constant Lithium and Protonic Electrolytes

Effect of Li+ Affinity on Ionic Conductivities in Melt-Blended Nitrile Rubber/Polyether

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Effect of Li⁺ Affinity on Ionic Conductivities in Melt-Blended Nitrile Rubber/Polyether