Cd|KOH|NiOOH

Zn|NH4CI|MnO2

Li|LiClO4|MnO2

Pb|H2SO4|PbO2

H2|KOH|O2

Electrolytes for sources of electrochemical power

Polymer Electrolytes for Sodium-ion Batteries

DOI: https://doi.org/10.18500/1608-4039-2018-18-1-26-47

The critical analysis of literature of last 15 years, concerning solid polymer electrolytes with Na+-ion-conductivity is presented. True polymer electrolytes as well as gel-polymer electrolytes based on polyethylene oxide, polyacrylonitrile, polyvinyl alcohol, polyvinyl chloride, polyvinyl pyrrolidone, PVdF–HFP, PMMA, Nafion are reviewed. Special attention is paid for temperature dependence of conductivity.

The state-of-the-art and prospects for the development of electrolyte systems for lithium power sources

УДК 544.6.018.4

DOI:  https://doi.org/10.18500/1608-4039-2016-16-4-155-195

In the review the works on the development of liquid organic electrolyte systems for lithium power sources in the past 10 years are considered. The review consists of chapters on the state-of-the-art and prospects of investigations on lithium salts, aprotic solvents, and additives to the liquid electrolyte, performing a variety of functions to improve the performance of the lithium power source. Bibliography – 168 references.

Electrolytes for high-temperature chemical current sources: formation and research systems, composition and properties

DOI: 10.18500/1608-4039-2015-15-4-180-195

The method of forming systems for search molten electrolyte chemical power sources, an example of studying some of the properties and composition of the electrolyte. Presents some test trains in real chemical current sources.

Research of degradation mechanism of the membrane-electrode assemlies of solid polymer water electrolyzer

Concerning performance, safety, reliability and durability issues, the membrane-electrode assembly (MEA) is probably the weakest cell component. Most performance losses and most accidents occurring during PEM water electrolysis are usually due to the MEA. The purpose of this article is to report on specific degradation mechanisms of the MEA and electrolyser in whole.

Influence of additives of EMIBF4 and BMIBF4 ionic liquids on the properties of network polymer electrolytes for lithium power sources

The effect of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) and 1-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) ionic liquids on the properties of the polymer electrolyte based on polyethylene glycol diacrylate (PEG-DA) and LiBF4 salt was studied. Research was carried out by spray-mass spectroscopy, differential scanning calorimetry, and electrochemical impedance spectroscopy technique in the temperature range from -40 to 120 °C.

Volume Change When Melting Halides of s'-Elements and their Double Mixes: Analytical Description, Calculation and Interrelation

An important feature when using low-melting mixtures of halides of s-elements as a refiner of electrolytes for chemical power sources and thermal storage materials in thermal batteries is the amount of volume increase in the melting process which can be calculated by the formula [1]:
ΔV = ((Vк – Vж) / Vк)·100% = (ΔV/Vк)·100%,(1)
where Vк – the volume of a solid substance (or mixture) at the melting temperature; Vж – the volume of liquid at the melting temperature (substance or mixture); ΔV – volume difference in the liquid and solid states of the substance.
Identification of ΔV is necessary because all the halides increase their volume, therefore melting increases the mixture of halides volume. So, when filling chemical power sources and storage heaters by mixtures it is necessary to keep a share of the free volume not only for expansion of the mixture in the solid (including the transition from one crystal structure to another) and liquid state, but also for increasing of the melting compounds volume. But, in the literature [2,3] provides data on the increase volume in the melting is not for everyone halides s-elements (table 1).

Solid potassium-conducting electrolytes in the systems K3-2xМxРO4 (М = Mg, Zn)

New potassium solid electrolytes in the systems K 3-2x M x PO 4 (M = Mg, Zn) were synthesized and studied. The introduction of Mg2+ and Zn2+ cations leads to sharp increasing of K 3 PO 4 conductivity due to potassium vacancies formation and stabilization of high temperature cubic modification of orthophosphate. Maximum conductivity is observed at x ≈ 0.15–0.25 and is equal to (6–8)·10-2 S·cm-1 at 400°C, higher than 10-1 S·cm-1 at 700°C. The factors influencing on the transport properties of investigated electrolytes are discussed.

Study of electrolyte composition effect on the properties of oxide solar cells

Properties of Dye Solar Cells with quasi solid electrolytes based on PEG have been investigated. The attempts to enhance the electrolyte conductivity was made with Li electrolyte introduction.

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