Effect of Salt Concentration on the Conductivity of PEO-Based Composite Polymeric Electrolytes

Wieczorek, W.; Raducha, Dorota; Zalewska, A.; Stevens, J. R.

doi:10.1021/jp982403f

Cited by 218 publications

(162 citation statements)

References 25 publications

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“…The electrochemical stability window of solid polymer electrolyte was obtained at 25 C by a cyclic voltammetry using a stainless-steel as the working electrode and lithium metal as the counter and reference electrode at the scanning rate of 1.0 mV s …”

Section: Electrochemical Stability Windowmentioning

confidence: 99%

“…The interfacial resistance between PTEC-LiTFSI and lithium metal electrode was carried out by measuring the EIS of a Li/PTECLiTFSI/Li symmetrical cell for different aging time at 25 C. The EIS measurements were examined from 4 MHz to 100 mHz with an amplitude of 10 mV using a Zahner Zennium electrochemical working station. The electrolyte membrane was prepared by casting its solution onto lithium foil inside the glove-box and the solvent was removed by heating at 60 C for 8 h.…”

Section: Interfacial Stability With Lithium Metal Electrodementioning

confidence: 99%

“…To develop dry solid polymer electrolytes with high ionic conductivity and interfacial stability, many strategies, such as synthesizing PEO copolymers [11][12][13][14][15][16], tailoring blend polymers [17], preparing branched PEO polymers [18][19][20] or cross-linked PEO polymers [21][22][23] and compositing ceramic fillers [8,[24][25][26][27][28][29][30][31][32] have been extensively studied [33]. A self-doped solid block copolymer electrolyte was synthesized combining a single-ion poly(lithium methacrylate-co-oligoethylene glycol methacrylate) (P(MALi-co-OEGMA)) and a structuring polystyrene block (PS).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Cui

Liu

et al. 2017

Electrochimica Acta

136

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A B S T R A C TThe classic poly(ethylene oxide) (PEO) based solid polymer electrolyte suffers from poor ionic conductivity of ambient temperature, low lithium ion transference number and relatively narrow electrochemical window (<4.0 V vs. Li + /Li). Herein, the carbonate-linked PEO solid polymer such as poly (diethylene glycol carbonate) (PDEC) and poly(triethylene glycol carbonate) (PTEC) were explored to find out the feasibility of resolving above issues. It was proven that the optimized ionic conductivity of PTEC based electrolyte reached up to 1.12 Â 10 À5 S cm À1 at 25 C with a decent lithium ion transference number of 0.39 and a wide electrochemical window about 4.5 V vs. Li + /Li. In addition, the PTEC based Li/LiFePO 4 cell could be reversibly charged and discharged at 0.05 C-rates at ambient temperature. Moreover, the higher voltage Li/LiFe 0.2 Mn 0.8 PO 4 cell (cutoff voltage 4.35 V) possessed considerable rate capability and excellent cycling performance even at ambient temperature. Therefore, these carbonate-linked PEO electrolytes were demonstrated to be fascinating candidates for the next generation solid state lithium batteries simultaneously with high energy and high safety.

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Section: Electrochemical Stability Windowmentioning

confidence: 99%

Section: Interfacial Stability With Lithium Metal Electrodementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Cui

Liu

et al. 2017

Electrochimica Acta

136

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“…In the pure PEO sample, the CH 2 wagging mode peak ͑observed at about 1350 cm −1 in amorphous PEO͒ is split into two peaks at ϳ1360 and ϳ1343 cm −1 ; this is further evidence for the presence of a crystalline PEO phase. [21][22][23] After the addition of the Li + salt, the two peaks at ϳ1360 and ϳ1343 cm is apparent for all the PEO-based polymer electrolytes, indicating that an abundance of free Li + ions is present in each of these electrolytes. 21 The broader peaks characteristic of H 2 O at ϳ3500 cm −1 are also observed for all the samples because exposure to moisture cannot be avoided during the preparation of the samples and the recording of the spectra.…”

Section: A8mentioning

confidence: 98%

Nanocomposite Polymer Electrolyte Doped with Nanosized Li[sub 0.1]Ca[sub 0.9]TiO[sub 3] for Lithium Polymer Batteries

Wang

Yang

et al. 2010

Electrochem. Solid-State Lett.

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A poly͑ethylene oxide͒ ͑PEO͒-based nanocomposite polymer electrolyte ͑NCPE͒ doped with nanosized Li 0.1 Ca 0.9 TiO 3 , a lithium fast ionic conductor, has been developed. The ionic conductivity and lithium ion transference number of PEO 12 -LiClO 4 -Li 0.1 Ca 0.9 TiO 3 NCPE are both enhanced by the addition of nanosized Li 0.1 Ca 0.9 TiO 3 , with a maximum ionic conductivity of 1.02 ϫ 10 −5 S cm −1 at room temperature and a maximum lithium ion transference number of 0.533 at 70°C when the Li 0.1 Ca 0.9 TiO 3 content is 15 wt %. A broad electrochemical stability window suggests that the NCPE is a viable candidate for the electrolyte material in lithium polymer batteries. A solid-state lithium polymer battery has attracted the attention of many researchers because of its features, such as flexibility in the shape of the cell design, leak-proof electrolyte, and high safety. The key component in a solid-state lithium polymer battery is the polymer electrolyte. For a fully dried polymer electrolyte, poly͑ethylene oxide͒ ͑PEO͒ has been considered one of the most favorable lithium conducting matrices. The main drawback of PEO-based polymer electrolytes is the relatively high crystallinity of PEO at room temperature.1 This reduces the ionic conductivity of PEO-based polymer electrolytes to a level that is too low to satisfy the general requirements of batteries or other practical electrochemical devices. To improve the ionic conductivity at ambient temperature, most research efforts have been dedicated to obtaining solid polymer electrolyte films containing a variety of stable amorphous phases; these afford us good flexibility of the polymer chains, which favors ion transport. To date, most of the successful work has been carried out using inorganic materials, such as ceramic and nano-oxides, 2-7 layered clays, [8][9][10] organic-inorganic hybrid materials, 11,12 and microporous molecular sieves [13][14][15] as fillers to enhance the ionic conductivity of the polymer electrolytes. However, none of these inorganic fillers is an ionic conductor that introduces lithium ions into the polymer electrolyte. In an effort to further enhance the ionic conductivity, Wang et al. 16 introduced a lithium fast ionic conductor Li 3−2x ͑Al 1−x Ti x ͒ 2 ͑PO 4 ͒ 3 ͑x = 0.55-1.0͒, produced by a conventional solid-state reaction, into a PEO-based polymer electrolyte. The ionic conductivity of a PEO-LiClO 4 -Li 1.3 Al 0.3 Ti 1.7 ͑PO 4 ͒ 3 film with ethylene oxide ͑EO͒/Li = 8 reached a maximum of 7.985 ϫ 10 −6 S cm −1 at room temperature when the Li 1.3 Al 0.3 Ti 1.7 ͑PO 4 ͒ 3 content was 15 wt %. However, the modal grain size of the Li 1.3 Al 0.3 Ti 1.7 ͑PO 4 ͒ 3 powders is larger than 0.5 m, which may adversely affect the electrochemical properties of the resulting solid composite polymer electrolytes. Nanosized fillers have been chosen as additives in PEO-based composite polymer electrolytes and are effective in enhancing the ionic conductivity, lithium ion transference number, and electrochemical stability. −5 -10 −6 S cm −1 ͒. 16 Thus, t...

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“…In the construction polymer/inorganic amalgamated composite electrolytes, interaction effects in the composite will increase to include the effects between inorganic fillers and polymer matrixes, inorganic fillers and salts, and inorganic fillers and solvents. Of these interactions, inorganic filler and polymer matrix Lewis acid-base interaction effects [175,176], entropy effects [176,177], ion aggregate formation change effects [178,179] and weakening polymer cation association effects [180] have been the most investigated and a further understanding is essential for the fabrication of optimal composite electrolytes. In general, inorganic fillers in polymer matrixes can act as a physical plasticizer to contribute to the decrease of crystallization and the increase of ionic conductivity [56,181].…”

Section: Interactions In the Composite Electrolytementioning

confidence: 99%

Recent Advancements in Polymer-Based Composite Electrolytes for Rechargeable Lithium Batteries

Tan

Zeng

et al. 2018

Electrochem. Energ. Rev.

334

170

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In recent years, lithium batteries using conventional organic liquid electrolytes have been found to possess a series of safety concerns. Because of this, solid polymer electrolytes, benefiting from shape versatility, flexibility, low-weight and low processing costs, are being investigated as promising candidates to replace currently available organic liquid electrolytes in lithium batteries. However, the inferior ion diffusion and poor mechanical performance of these promising solid polymer electrolytes remain a challenge. To resolve these challenges and improve overall comprehensive performance, polymers are being coordinated with other components, including liquid electrolytes, polymers and inorganic fillers, to form polymer-based composite electrolytes. In this review, recent advancements in polymer-based composite electrolytes including polymer/ liquid hybrid electrolytes, polymer/polymer coordinating electrolytes and polymer/inorganic composite electrolytes are reviewed; exploring the benefits, synergistic mechanisms, design methods, and developments and outlooks for each individual composite strategy. This review will also provide discussions aimed toward presenting perspectives for the strategic design of polymer-based composite electrolytes as well as building a foundation for the future research and development of high-performance solid polymer electrolytes.

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Effect of Salt Concentration on the Conductivity of PEO-Based Composite Polymeric Electrolytes

Cited by 218 publications

References 25 publications

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Carbonate-linked poly(ethylene oxide) polymer electrolytes towards high performance solid state lithium batteries

Nanocomposite Polymer Electrolyte Doped with Nanosized Li[sub 0.1]Ca[sub 0.9]TiO[sub 3] for Lithium Polymer Batteries

Recent Advancements in Polymer-Based Composite Electrolytes for Rechargeable Lithium Batteries

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