Polymer Electrolyte Application in Electrochemical Devices

Yusuf, S.N.F.; Arof, A. K.

doi:10.1002/9783527805457.ch6

Cited by 7 publications

(6 citation statements)

References 151 publications

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“…To investigate the effect of the thickness of the nanofiber membranes, the ionic conductivity of the LESPE-05, LESPE-10, LESPE-15, LESPE-20, LESPE-25, and PEO/LiTFSI samples was measured between 30 and 80 °C (Figure ). The ionic conductivity of the SPEs increased with increasing temperature because of the higher mobility of the polymer chains and the faster migration of lithium ions. , The β-phase electrospun PVDF-HFP nanofibers facilitated lithium-ion transport, resulting in higher ionic conductivity than that of the PEO/LiTFSI electrolyte. All the LESPE samples achieved a high ionic conductivity of >10 –3 S cm –1 at 80 °C.…”

Section: Resultssupporting

confidence: 70%

“…The ionic conductivity of the SPEs increased with increasing temperature because of the higher mobility of the polymer chains and the faster migration of lithium ions. 49,50 The β-phase electrospun PVDF-HFP nanofibers facilitated lithium-ion transport, resulting in higher ionic conductivity than that of the PEO/LiTFSI electrolyte. All the LESPE samples achieved a high ionic conductivity of >10 −3 S cm −1 at 80 °C.…”

Section: Lithium-ion Conductivitymentioning

confidence: 99%

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Tough Polymer Electrolyte with an Intrinsically Stabilized Interface with Li Metal for All-Solid-State Lithium-Ion Batteries

et al. 2021

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A high-performance solid polymer electrolyte (SPE) membrane that simultaneously addresses the issues of enhanced toughness and Li-dendrite mitigation for all-solid-state Li-ion batteries (ASSLIBs) is demonstrated. The membrane has a sandwiched structure consisting of a center poly(ethylene oxide)/ lithium bis(trifluoromethanesulfonyl) imide (PEO/LiTFSI) electrolyte matrix laminated on both sides with electrospun high-polarity β-phase poly(vinylidene fluoride-co-hexafluoropropylene) (β-PVDF-HFP) nanofibers. The nanofiber layers impart remarkable enhancement in both mechanical and electrochemical properties of the SPE, including a 20-fold increase in tensile strength and a 48-fold increase in toughness, along with up to 4-fold enhancement in Li-ionic conductivity. Moreover, the highly polar fluorinated nanofiber cladding layers enable a stable Li-plating/ stripping interface on the Li anode to efficiently mitigate dendrite formation, while improving the electrochemical interfacial stability with the cathode. In a Li|SPE|Li symmetric cell, the use of the sandwiched SPE is demonstrated to improve the cycle stability from short-circuiting at 144 h for a pristine PEO/LiTFSI membrane to no short-circuiting even up to 3600 h (1800 Liplating-stripping cycles). In an example of LiFePO 4 |SPE|Li ASSLIBs, using the sandwiched membrane enables substantial reduction irreversible capacity upon charging to the high-voltage end and more than 80% capacity retention for over 1600 h. This work presents a feasible and facile design for an SPE for high-performance ASSLIBs.

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Section: Resultssupporting

confidence: 70%

Section: Lithium-ion Conductivitymentioning

confidence: 99%

Tough Polymer Electrolyte with an Intrinsically Stabilized Interface with Li Metal for All-Solid-State Lithium-Ion Batteries

et al. 2021

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“…Nevertheless, the anions and cations can move through the electrolyte into the Stern layer by the combined influence of diffusion and electrostatic forces. The region with mobile ions is defined as the diffuse layer [49] . If the electrolyte is concentrated, the diffusion layer thickness is less important, and the potential drop is gentler due to the high capacitance.…”

Section: Resultsmentioning

confidence: 99%

“…[47,48] The AG-1M capacitor performance results from the only process that takes place in supercapacitors, which is the charging and discharging of an EDL at the electrode-electrolyte interface. [49] The charge-discharge of the EDL in NaCl-based electrolytes occurs by electrostatic or no faradaic processes, as shown in the schematic in Figure 6c. The formation of an EDL involves the compensation of the created charge on the electrode surface by Na + or Cl À ions.…”

Section: Electrical Performance Of Sustainable Supercapacitormentioning

confidence: 99%

“…The region with mobile ions is defined as the diffuse layer. [49] If the electrolyte is concentrated, the diffusion layer thickness is less important, and the potential drop is gentler due to the high capacitance. Herein, the low NaCl concentration in the water contributed to the low verified capacitance.…”

Section: Electrical Performance Of Sustainable Supercapacitormentioning

confidence: 99%

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Gel Biopolymer Electrolytes Based on Saline Water and Seaweed to Support the Large‐Scale Production of Sustainable Supercapacitors

Santa‐Cruz,

Mantovi,

Loguercio

et al. 2023

ChemSusChem

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Climate change and the demand for clean energy have challenged scientists worldwide to produce/store more energy to reduce carbon emissions. This work proposes a conductive gel biopolymer electrolyte to support the sustainable development of high‐power aqueous supercapacitors. The gel uses saline water and seaweed as sustainable resources. Herein, a biopolymer agar‒agar, extracted from red algae, is modified to increase gel viscosity up to 17‐fold. This occurs due to alkaline treatment and an increase in the concentration of the agar‒agar biopolymer, resulting in a strengthened gel with cohesive superfibres. The thermal degradation and agar modification mechanisms are explored. The electrolyte is applied to manufacture sustainable and flexible supercapacitors with satisfactory energy density (0.764 W h kg‐1) and power density (230 W kg‐1). As an electrolyte, the aqueous gel promotes a long device cycle life (3500 cycles) for 1 Ag‐1, showing good transport properties and low cost of acquisition and enabling the supercapacitor to be manufactured outside a glove box. These features decrease the cost of production and favor scale‐up. To this end, this work provides eco‐friendly electrolytes for the next generation of flexible energy storage devices.

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Ce(III)‐Based Coordination‐Complex‐Based Efficient Radical Scavenger for Exceptional Durability Enhancement of Polymer Application in Proton‐Exchange Membrane Fuel Cells and Organic Photovoltaics

Kwon

Min

Park³

et al. 2022

Adv Energy and Sustain Res

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To ensure a sustainable future, a tremendous range of energy conversion and storage devices including fuel cells, photovoltaics, and electrolyzers, has been developed in recent decades for the eco-friendly production and consumption of energy, without increasing CO 2 emissions. [1] The main concern about those devices for practical realization is maximizing the overall lifetime of their operation, which is largely affected by the durability of device-configuring materials under the specific operation condition for each device. In particular, soft polymeric materials are some of the key materials in those devices and are widely applied as active sites for energy conversion, charge carrier transporting media, material transporting media, etc. However, degradation of those polymeric materials in the device inevitably occurs during device operation in physical and chemical manner. [2] To be more

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Polymer Electrolyte Application in Electrochemical Devices

Cited by 7 publications

References 151 publications

Tough Polymer Electrolyte with an Intrinsically Stabilized Interface with Li Metal for All-Solid-State Lithium-Ion Batteries

Tough Polymer Electrolyte with an Intrinsically Stabilized Interface with Li Metal for All-Solid-State Lithium-Ion Batteries

Gel Biopolymer Electrolytes Based on Saline Water and Seaweed to Support the Large‐Scale Production of Sustainable Supercapacitors

Ce(III)‐Based Coordination‐Complex‐Based Efficient Radical Scavenger for Exceptional Durability Enhancement of Polymer Application in Proton‐Exchange Membrane Fuel Cells and Organic Photovoltaics

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