Systematics of salt precipitation in complexes of polyethylene oxide and alkali metal iodides

Bastek, J.; Stolwijk, N. A.; Köster, Th. K.-J.; Wüllen, Leo van

doi:10.1016/j.electacta.2009.04.040

Cited by 17 publications

(26 citation statements)

References 18 publications

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“…Measuring diffusion of the radiotracers 86 Rb and 125 I in PEO 30 RbI for temperatures in the SP-free range T < T c yields common profiles of Gaussian or erfc type, as expected [17]. The diffusion coefficients D resulting from fits with Eqs.…”

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidessupporting

confidence: 63%

“…For unfavourable combinations of polymer and salt, no complexes are formed, which usually implies that T c falls below room temperature. Recent work by our group showed that for PEO 30 MI electrolytes with a fixed concentration of alkali metal iodides MI (EO/MI = 30), T c decreases with increasing size of the cation M (= Li, Na, K, Rb, Cs) [17]. More specifically, a linear decrease of T c with decreasing lattice energy was found.…”

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidesmentioning

confidence: 81%

“…More specifically, a linear decrease of T c with decreasing lattice energy was found. Furthermore, for particular SPE systems, i.e., PPO-KSCN [34] and PEO-RbI [17], it was observed that T c monotonically decreased with increasing salt concentration. Classical methods to detect and characterize precipitation phenomena in materials are thermal analysis, X-ray diffraction, and microscopic methods.…”

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidesmentioning

confidence: 98%

“…• C for nominally one hour [17]. Here, the temperature was recorded by a thermocouple inserted in a (non-radioactive) PEO 30 NaI sample encapsulated in the standard fashion.…”

Section: The Radiotracer Technique For Ionic Diffusion Studies In Polmentioning

confidence: 99%

“…This decrease of D σ can be naturally explained with the removal of free ions from the electrolyte due to salt precipitation, as was independently indicated by an corresponding endothermic event in differential scanning calorimetry. Unambiguous evidence for the precipitation of the RbI salt was obtained from NMR magic angle spinning (MAS) analysis using the signals of 87 Rb and 127 I, since only for T > T c the characteristic spectrum of pristine RbI appeared and became stronger with increasing T [17].…”

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidesmentioning

confidence: 99%

See 4 more Smart Citations

The Use of Radiotracer Diffusion to Investigate Ionic Transport in Polymer Electrolytes: Examples, Effects, and Their Evaluation

Stolwijk¹,

Wiencierz

Fögeling

et al. 2010

Zeitschrift Für Physikalische Chemie

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The paper highlights some remarkable results obtained by applying the radiotracer diffusion (RTD) technique to the study of ionic transport in salt-in-polymer electrolytes. The technique is based on the determination of a radiotracer depth profile by serial sectioning following isothermal diffusion annealing. Unlike alternative methods, RTD is able to measure the self-cation and self-anion diffusivity even for systems dilute in salt. Another unique feature is the capability to investigate foreign-ion diffusion at extremely low concentration levels. Combined with DC conductivity data, RTD may provide a virtually complete picture of mass and charge transport in solid-like polymer electrolytes (SPEs). The paper describes the special SPE-related procedures used in the RTD experiments and their analysis. The advantages of the method will be demonstrated with selected examples of self-and foreign-ion diffusion in prototype SPE systems. We also present prominent examples of RTD dealing with the effects of salt precipitation and oxide nano-particles used as dispersed filler material.

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Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidessupporting

confidence: 63%

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidesmentioning

confidence: 81%

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidesmentioning

confidence: 98%

“…• C for nominally one hour [17]. Here, the temperature was recorded by a thermocouple inserted in a (non-radioactive) PEO 30 NaI sample encapsulated in the standard fashion.…”

Section: The Radiotracer Technique For Ionic Diffusion Studies In Polmentioning

confidence: 99%

Section: Salt-precipitation In Complexes Of Peo and Alkali Metal Iodidesmentioning

confidence: 99%

See 3 more Smart Citations

The Use of Radiotracer Diffusion to Investigate Ionic Transport in Polymer Electrolytes: Examples, Effects, and Their Evaluation

Stolwijk¹,

Wiencierz

Fögeling

et al. 2010

Zeitschrift Für Physikalische Chemie

Self Cite

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Moving Down Group 1: Analytical Challenges and Current Trends for Solid Polymer Electrolytes in Post‐Li Battery Applications

Jeschull

2024

ChemElectroChem

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The solid polymer electrolyte (SPE) field has traditionally struggled with sufficiently high cation conduction at room temperature. The reason for this is that ion transport is usually coupled to polymer chain mobility and as such is strongly temperature dependent. The diversification of battery technologies from Li‐ion into Na‐ and K‐ion batteries has revived efforts in the 80s and 90s to develop a broad conceptional understanding and to find overarching trends of the ion transport properties of SPEs based on Group 1 elements, Li+, Na+, K+, Rb+ and Cs+ (i. e. beyond Li). This development brings its own set of challenges, starting from additional constraints to measure heavier cations. With a clearer aim towards tangible battery applications, particularly electrochemical stability and interphase formation, and together with a rising sensibility of sustainability aspects, other parameters have gained more relevance and opened new vectors of research. The associated scientific challenges and recent developments of Group 1 based SPEs shall be reviewed.

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Environmental-energy analysis and the importance of design and remanufacturing recycled materials

Jiménez¹,

Pompidou

Perry

2016

Int J Interact Des Manuf

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This paper proposes a framework that interrelates the life cycle of the product, remanufacturing and recycling for plastics. The paper analyses the different chemical processes of recycling polymer wastes. We introduce a thermodynamic calculation of the energy consumed and CO2 emissions for all types of waste (municipal, electronic, vehicle). The remanufacturing process could reduce the amount of CO2 emissions through feedback to the product design stage with robust platforms that extend the product life cycle. In order to meet the requirements of remanufacturing we combine mechanical and chemical recycling solutions. These recycling processes must undergo a thermodynamic analysis to optimize energy and decrease the minimum CO2 emissions, i.e. recycling processes in line with the ultimate objective, which is the reduction of CO2 emissions and slowing a part of the problem global warming.

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Systematics of salt precipitation in complexes of polyethylene oxide and alkali metal iodides

Cited by 17 publications

References 18 publications

The Use of Radiotracer Diffusion to Investigate Ionic Transport in Polymer Electrolytes: Examples, Effects, and Their Evaluation

The Use of Radiotracer Diffusion to Investigate Ionic Transport in Polymer Electrolytes: Examples, Effects, and Their Evaluation

Moving Down Group 1: Analytical Challenges and Current Trends for Solid Polymer Electrolytes in Post‐Li Battery Applications

Environmental-energy analysis and the importance of design and remanufacturing recycled materials

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