Ion transport in gel electrolytes

Reiche, A.; Steurich, T.; Sandner, B.; Lobitz, P.; Fleischer, G.

doi:10.1016/0013-4686(95)00156-9

Cited by 44 publications

(29 citation statements)

References 13 publications

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“…Reiche et al investigated gel SPEs on the basis of oligo(ethylene glycol)±dimethacrylate networks [(EG) 23 DMA] which had been swollen with various plasticizers. [35] They found that the extent of dissociation of the salt can be improved by the increase of the gel polarity when polar plasticizers are used or when polar comonomers were introduced into the network structure. Polar plasticizers with low molecular weight exhibit high selfdiffusion in the gel and give rise to high ion conductivity, however, with low cationic transference numbers.…”

Section: Spe Network and Gelsmentioning

confidence: 99%

Polymer Electrolytes for Lithium-Ion Batteries

1998

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The motivation for lithium battery development and a discussion of ion conducting polymers as separators begin this review, which includes a short history of polymer electrolyte research, a summary of the major parameters that determine lithium ion transport in polymer matrices, and consequences for solid polymer electrolyte development. Two major strategies for the application of ion conducting polymers as separators in lithium batteries are identified: One is the development of highly conductive materials via the crosslinking of mobile chains to form networks, which are then swollen by lithium salt solutions ("gel electrolytes"). The other is the construction of solid polymer electrolytes (SPEs) with supramolecular architectures, which intrinsically give rise to much enhanced mechanical strength. These materials as yet exhibit relatively common conductivity levels but may be applied as very thin films. Molecular composites based on poly(p-phenylene)- (PPP)-reinforced SPEs are a striking example of this direction. Neither strategy has as yet led to a "breakthrough" with respect to technical application, at least not for electrically powered vehicles. Before being used as separators, the gel electrolytes must be strengthened, while the molecularly reinforced solid polymer electrolytes must demonstrate improved conductivity.

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Section: Spe Network and Gelsmentioning

confidence: 99%

Polymer Electrolytes for Lithium-Ion Batteries

1998

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“…Fine tuning of the ionically conducting gel electrolyte [43,44] appears to us to be one of the most critical tasks in the development of electrochromic glazings. The gel electrolyte influences a variety of device properties.…”

Section: Feature Articlementioning

confidence: 99%

Electrochromic Window Based on Conducting Poly(3,4-ethylenedioxythiophene)-Poly(styrene sulfonate)

Heuer¹,

2002

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A short survey of technological aspects of electrochromism with various electroactive species is given. Different approaches with inorganic and organic materials have been pursued in the past. So far widespread usage of this technology for large area applications has not been achieved. Nevertheless one major technical product, self‐darkening rear‐view mirrors for cars, is already well established. This article reviews some research results on electroactive polythiophenes, especially poly(3,4‐alkylenedioxythiophenes). Some promising results with the commercially available electrically conducting polymer Baytron P (PEDT/PSS) are presented. It is demonstrated that an all solid‐state electrochromic multilayer assembly based on a polymeric electrochromic material might be close to technical realization. The coating of large area substrates with aqueous poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) dispersion can be a way to an economically viable product.

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“…However, their conductivity remains relatively low at room temperature, so the researchers are trying to find ways to improve it. For this they usually carry out doping of the polymer structure using compounds such as ion-NTF 2 (Christie et al, 2005;Reiche et al, 1995) or with salts as plasticizers LiClO 4 , and NaCF 3 SO 3 LiCF 3 SO 3 Recently, polymers have also been doped with ionic liquid type imidazolium and pyridinium (Noda & Watanabe, 2000): the conductivity of these compounds is located around 1mS.cm -1 . The team of H. Ohno (Ohno, 2001), has chosen to synthesize polymers bearing ionic function, rather than using the ionic liquid as a dopant.…”

Section: Acrylic Monomersmentioning

confidence: 99%