Effect of Al2O3 nanoparticles on ionic conductivity of PVdF-HFP/PMMA blend-based Na+-ion conducting nanocomposite gel polymer electrolyte

Mishra, Kuldeep; Arif, Tasnim; Kumar, R. Arun; Kumar, Deepak

doi:10.1007/s10008-019-04348-9

Cited by 57 publications

(41 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Common examples of polymers include poly(methyl methacrylate) (PMMA) and poly(vinylidene fluoride‐ co ‐hexafluoropropylene) (PVdF–HFP). [ 59,65–67 ] Luo et al. developed a novel GPE using GO flakes as ion transport sites in a PVdF–HFP host, attaining reversible stripping/plating of Na for over 400 h at 5 mA cm −2 .…”

Section: Stabilizing the Na Anode–electrolyte Interphasementioning

confidence: 99%

Room‐Temperature Sodium–Sulfur Batteries and Beyond: Realizing Practical High Energy Systems through Anode, Cathode, and Electrolyte Engineering

Eng

Kumar

Zhang

et al. 2021

Advanced Energy Materials

124

View full text Add to dashboard Cite

The increasing energy demands of society today have led to the pursuit of alternative energy storage systems that can fulfil rigorous requirements like cost‐effectiveness and high storage capacities. Based fundamentally on earth‐abundant sodium and sulfur, room‐temperature sodium–sulfur batteries are a promising solution in applications where existing lithium‐ion technology remains less economically viable, particularly in large‐scale stationary systems such as grid‐level storage. Here, the key challenges in the field are first highlighted, followed by comprehensive analyses of accessible strategies to overcome them, starting from engineering of the anode–electrolyte interface in both liquid and solid electrolytes. Recently reported polymer and solid‐state electrolytes are also surveyed. Thereafter, the core principles guiding use‐inspired design of cathode architectures, covering the spectrum of elemental sulfur and polysulfide cathodes, to emerging host structures, and covalent composites are focused upon. Future prospects are explored, with insights into other alkali‐metal systems beyond sodium–sulfur batteries, such as the potassium–sulfur battery. Finally a conclusion is provided by outlining the research directions necessary to attain high energy sodium–sulfur devices, and potential solutions to issues concerning large‐scale production, so as to ultimately realize widespread deployment of practical energy storage systems.

show abstract

Section: Stabilizing the Na Anode–electrolyte Interphasementioning

confidence: 99%

Room‐Temperature Sodium–Sulfur Batteries and Beyond: Realizing Practical High Energy Systems through Anode, Cathode, and Electrolyte Engineering

Eng

Kumar

Zhang

et al. 2021

Advanced Energy Materials

124

View full text Add to dashboard Cite

show abstract

“…A combination of the simplified Wagner's method based on the chronoamperometry measurements realized in the blocking electrodes setup with the impedance ones performed in the sodium reversible amalgam electrodes was used by Mishra et al [144] for a nanocomposite gel polymer electrolyte. Whereas Wagner's experiment meaningfully allowed here to neglect the electronic contribution to the overall conductivity the fraction of the charge transported by sodium ions was doubtfully determined using the Sorensen-Jacobsen method based on the impedance measurements results performed down to 1 Hz only instead of the MHz range proposed in the original contributions introducing the method [50,51].…”

Section: Coupled Electrochemical Techniquesmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

“…Gel electrolytes have lower ionic conductivity than liquid electrolytes, but they do not require high safety encapsulation materials and have flexibility, which is necessary for wearable electronic devices [1,3,10,11,14]. Recently, Mishra et al [15] studied the effect of Al2O3 on ionic conductivity of PVDF-HFP/PMMA blend nanocomposite gel electrolyte. The electrolyte with 6 wt% Al 2 O 3 showed the highest ionic conductivity due to the uniform dispersion of nanoparticles in the gel and enhanced the amorphic nature of the polymer.…”

Section: Introductionmentioning

confidence: 99%

Performance-tuning of PVA-based gel electrolytes by acid/PVA ratio and PVA molecular weight

et al. 2021

View full text Add to dashboard Cite

The significant breakthroughs of flexible gel electrolytes have attracted extensive attention in modern wearable electronic gadgets. The lack of all-around high-performing gels limits the advantages of such devices for practical applications. To this end, developing a multi-functional gel architecture with superior ionic conductivity while enjoying good mechanical flexibility is a bottleneck to overcome. Herein, an architecturally engineered gel, based on PVA and H3PO4 with different molecular weights of PVA for various PVA/H3PO4 ratios, was developed. The results show the dependence of ionic conductivity on molecular weight and also charge carrier concentration. Consequently, fine-tuning of PVA-based gels through a simple yet systematic and well-regulated strategy to achieve highly ion-conducting gels, with the highest ionic conductivity of 14.75 ± 1.39 mS cm-1 have been made to fulfill the requirement of flexible devices. More importantly, gel electrolytes possess good mechanical robustness while exhibiting high-elasticity (%766.66 ± 59.73), making it an appropriate candidate for flexible devices.

show abstract

Effect of Al2O3 nanoparticles on ionic conductivity of PVdF-HFP/PMMA blend-based Na+-ion conducting nanocomposite gel polymer electrolyte

Cited by 57 publications

References 36 publications

Room‐Temperature Sodium–Sulfur Batteries and Beyond: Realizing Practical High Energy Systems through Anode, Cathode, and Electrolyte Engineering

Room‐Temperature Sodium–Sulfur Batteries and Beyond: Realizing Practical High Energy Systems through Anode, Cathode, and Electrolyte Engineering

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

Performance-tuning of PVA-based gel electrolytes by acid/PVA ratio and PVA molecular weight

Contact Info

Product

Resources

About