Ionic conductance of gel electrolyte using a polyurethane matrix for rechargeable lithium batteries

Yoshimoto, Nobuko; Nomura, Hanako; Shirai, Takahiro; Ishikawa, Masashi; Morita, Masayuki

doi:10.1016/j.electacta.2004.01.128

Cited by 31 publications

(12 citation statements)

References 25 publications

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“…However, one critical drawback of a neat PEO is its strong tendency to crystallize due to the helical structure of chains and consequently it presents low ionic conductivity below its melting temperature (60-70°C). Thus, synthesis of PEO with a low crystallinity has been recently investigated based on controlling the structures of polymer such as blending, crosslinking, block copolymerization and random copolymerization [13][14][15]. Poly(oxyethylene methacrylate) (POEM) is a well-known amorphous PEO, which possess a ''liquid-like" poor mechanical property [16] and thus cannot be readily applied to solid polymer electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Quasi solid-state dye-sensitized solar cells based on P(VDF-co-CTFE) graft copolymer electrolytes

Seo¹,

Roh²,

Yeon³

et al. 2010

Current Applied Physics

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Section: Introductionmentioning

confidence: 99%

Quasi solid-state dye-sensitized solar cells based on P(VDF-co-CTFE) graft copolymer electrolytes

Seo¹,

Roh²,

Yeon³

et al. 2010

Current Applied Physics

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“…Dissolution process involves the coordinative interactions between the ions and the polar groups of polymer matrix. The conductive and transport properties of polymer electrolytes have led them to be intensively studied for potential applications in lithium batteries [1], fuel cells [2] and separation membranes [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of oligomer on dye-sensitized solar cells employing polymer electrolytes

Ahn

Kim

Lee

et al. 2010

Korean J. Chem. Eng.

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The effect of oligomer (M n =400-500 g/mol) on dye-sensitized solar cells (DSSC) employing polymer electrolytes consisting of poly(epichlorohydrin-co-ethylene oxide) (Epichlomer), LiI, 1-methyl-3-propylimidazolium iodide (MPII) and I 2 is investigated. Five kinds of oligomer, poly(ethylene glycol) (PEG, M n =400 and 1,000 g/mol), poly(ethylene glycol) dimethyl ether (PEGDME), poly(propylene glycol) (PPG) and poly(ethylene glycol) diglycidyl ether (PEGDGE), were introduced to elucidate the role of terminal groups and chain length. The coordinative interactions and structures of polymer electrolytes were characterized by FT-IR spectroscopy and X-ray diffraction (XRD). The improved interfacial contact between the electrolytes and the electrodes by the oligomer addition was confirmed using a field-emission scanning electron microscope (FE-SEM). The electrolytes exhibited ionic conductivities on the order of 10 −4 S/cm, but PEGDGE electrolyte showed much lower value (~10 −8 S/cm). As a result, the energy conversion efficiency of DSSC was significantly affected by the oligomer. For example, the DSSC employing PEGDME with methyl terminal groups exhibited 3.95% at 100 mW/cm 2 , which is 200-fold higher than that employing PEGDGE.

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“…In this respect, many attempts have been reported about new type PEs with high performance and good operating safety. The relevant research can be roughly classified into three categories: (1) in situ polymerization [2][3][4][5][6][7]: The monomers and liquid electrolytes are first mixed into a homogeneous solution and then polymerized together by means of ionizing radiation, ultraviolet light, or the use of chemical initiators. The advantages of this method are speed and convenience.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical performance of methyl methacrylate graft-copolymerized composite separator based on radiation polymerization technique

Gao

2010

Ionics

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The pre-irradiation method is introduced to prepare methyl methacrylate graft-copolymerized composite separators. The morphologies of the grafted membranes (GMs) were observed under a scanning electron microscope. The cyclic voltammetry and electrochemical impedance spectra results indicated that the obtained polymer electrolytes (PEs) based on GMs could hold the excellent performance of Li + transportation and possess good affinity with Li metal electrode. The Li/PEs/LiCoO 2 cells demonstrated excellent cycling performance with little capacity loss after 80 cycles. These cells also showed a good rate property and could retain 70.2% (25°C) and 81% (75°C) of discharge capacity at 2C rate as compared to that at C/5 rate. The results of this paper suggest that the high-quality composite separators can be obtained by pre-irradiation technique, and this also offered a new and convenient way for the large-scale manufacture of Li-ion polymer battery.

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Ionic conductance of gel electrolyte using a polyurethane matrix for rechargeable lithium batteries

Cited by 31 publications

References 25 publications

Quasi solid-state dye-sensitized solar cells based on P(VDF-co-CTFE) graft copolymer electrolytes

Quasi solid-state dye-sensitized solar cells based on P(VDF-co-CTFE) graft copolymer electrolytes

Effect of oligomer on dye-sensitized solar cells employing polymer electrolytes

Electrochemical performance of methyl methacrylate graft-copolymerized composite separator based on radiation polymerization technique

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