Electrochemical characteristics of two types of PEO-based composite electrolyte with functional SiO2

Kim, Jong-Wook; Ji, Kwang-Sun; Lee, Jae-Pil; Park, Jong-Wan

doi:10.1016/s0378-7753(03)00263-5

Cited by 115 publications

(55 citation statements)

References 21 publications

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“…The commonly used fillers include Li 3 N, LiAlO 2 , Al 2 O 3 , SiO 2 , TiO 2 , and BaTiO 3 , [43][44][45][46][47] the performance of which strongly depend on their morphology, [48] size, [49] crystallinity, [50] and surface modification. [51][52][53][54] In addition, the performance of the GPEs can also be increased by introducing functional or assistant polymers with higher ionic conductivities, better mechanical properties, and higher thermal stability. The combination of assistant polymer with the polymer matrix can be realized through alternating, blocking or grafting copolymerization.…”

Section: The Performance Improvement Of the Gpesmentioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

783

562

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storage devices with adjustable shapes and high flexibility, which is promising for the burgeoning portable and wearable electronics. [7][8][9] Furthermore, the flexibility and elasticity of GPEs are also prone to tolerate the volume change of electrode materials and the dendrites of lithium metal during charge and discharge processes. [10][11][12][13] As a consequence, GPEs have become one of the most desirable alternatives among various electrolytes for the electrochemical energy storage devices, and significant progress has been made in lithium-ion batteries (LIBs), supercapacitors (SCs), lithium-oxygen (Li-O 2 ) batteries as well as the other kinds of electrochemical energy storage devices, such as sodium-ion batteries, lithium-sulfur batteries, fuel cells, and zinc-air batteries. [14][15][16] In order to meet the requirements of wearable devices for flexibility and deformability, more special GPEs with tough, [17] stretchable, [18] and compressible [19] functionalities have been also developed.Typically, a polymeric framework is adopted in GPEs as host material, providing high mechanical integrity. Several criteria for a good polymer host lie in: [20][21][22] (i) fast segmental motion of polymer chain; (ii) special groups promoting the dissolution of salts; (iii) low glass transition temperature (T g ); (iv) high molecular weight; (v) wide electrochemical window; (vi) high degradation temperature. Within the framework, the salts in the GPEs serve as the sources of the charge carriers, which are generally required to have large anions and low dissociation energy for easier dissociating-induced free/mobile ions. According to the types of electrolytes, there are four categories of GPEs based on proton, [23] alkaline, [24] conducting salts, and ionic liquids (ILs). [25] The criteria for an appropriate electrolyte include: [26][27][28] (i) good dissociation without forming ion pairs or ion aggregation; (ii) high thermal, chemical, and electrochemical stability; (iii) high ionic conductivity. In order to dissolve both the polymer hosts and electrolytic salts, the organic/ aqueous solvents are introduced to provide the medium for ionic conduction. A good solvent should simultaneously have high dielectric constant (ɛ > 15), donor number for more dissociation of ion and chemical and electrochemical stability. Organic solvents normally include ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC), dimethyl carbonate (DMC), dimethyl formamide (DMF), dimethyl sulphoxide, ethyl methyl carbonate, and tetrahydrofuran.To prepare a high-performance GPE, it is essential to select the species of host polymer, solvent, and electrolytic salt, and then blend them by solution or melt processes, such as casting With the booming development of flexible and wearable electronics, their safety issues and operation stabilities have attracted worldwide attentions. Compared with traditional liquid electrolytes, gel polymer electrolytes (GPEs) are preferred due to their higher safety and adaptability to the design of ...

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Section: The Performance Improvement Of the Gpesmentioning

confidence: 99%

Gel Polymer Electrolytes for Electrochemical Energy Storage

Cheng

Pan

Zhao

et al. 2017

Advanced Energy Materials

783

562

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“…The addition of these ceramic particle fillers is believed to hinder the polymer crystallization or to contribute highly conductive interface layers between polymer and ceramic [11e14]. The ceramic fillers are generally divided into two categories: inactive fillers that are not involved in lithium ion conduction process (e.g., Al 2 O 3 [11] and SiO 2 [12]) and active ones that participate in lithium ion transport (e.g., Li 3 N [13]). However, high ionic conductivities (>10 À4 S cm À1 ) can be obtained in these composites when they have very high filler contents (e.g.…”

Section: Introductionmentioning

confidence: 99%

A new solid polymer electrolyte incorporating Li10GeP2S12 into a polyethylene oxide matrix for all-solid-state lithium batteries

Zhao

Peng

et al. 2016

Journal of Power Sources

406

206

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“…It may help in ion transport in electrolyte in order to increase ionic conductivity. 31,32 Figure 11e shows that the carbon content uniformly distributed in PEO, which is seen in morphograph by coal like shape, rough surface morphology and large number of porosity. There are large number of cracks and voids in the surface of electrode which improve the surface area.…”

Section: 2c Sem and Edsmentioning

confidence: 99%

PEO nanocomposite polymer electrolyte for solid state symmetric capacitors

Singh¹,

Verma

Minakshi

2015

Bull Mater Sci

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Abstract. Physical and electrochemical properties of polyethylene oxide (PEO)-based nanocomposite solid polymer electrolytes (NPEs) were investigated for symmetric capacitor applications. Nanosize fillers, i.e., Al 2 O 3 and SiO 2 incorporated polymer electrolyte exhibited higher ionic conductivity than those with filler-free composites. The composites have been synthesized by the completely dry (solution-free) hot-press method. The addition of filler in fractional amount to the solid polymer matrix at room temperature further enhances the ionic conductivity. Nature of the NPEs were studied using X-ray diffraction and energy-dispersive spectra analyses.

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Electrochemical characteristics of two types of PEO-based composite electrolyte with functional SiO2

Cited by 115 publications

References 21 publications

Gel Polymer Electrolytes for Electrochemical Energy Storage

Gel Polymer Electrolytes for Electrochemical Energy Storage

A new solid polymer electrolyte incorporating Li10GeP2S12 into a polyethylene oxide matrix for all-solid-state lithium batteries

PEO nanocomposite polymer electrolyte for solid state symmetric capacitors

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