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Lithium hydroxide

About: Lithium hydroxide is a research topic. Over the lifetime, 3027 publications have been published within this topic receiving 26806 citations. The topic is also known as: lithium hydrate & LiOH.


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Journal ArticleDOI
TL;DR: The hydration of the alkali metal ions in aqueous solution has been studied by large angle X-ray scattering (LAXS) and double difference infrared spectroscopy (DDIR) and it is shown that the sodium, potassium, rubidium and cesium ions all are weakly hydrated with only a single shell of water molecules.
Abstract: The hydration of the alkali metal ions in aqueous solution has been studied by large angle X-ray scattering (LAXS) and double difference infrared spectroscopy (DDIR). The structures of the dimethyl sulfoxide solvated alkali metal ions in solution have been determined to support the studies in aqueous solution. The results of the LAXS and DDIR measurements show that the sodium, potassium, rubidium and cesium ions all are weakly hydrated with only a single shell of water molecules. The smaller lithium ion is more strongly hydrated, most probably with a second hydration shell present. The influence of the rubidium and cesium ions on the water structure was found to be very weak, and it was not possible to quantify this effect in a reliable way due to insufficient separation of the O–D stretching bands of partially deuterated water bound to these metal ions and the O–D stretching bands of the bulk water. Aqueous solutions of sodium, potassium and cesium iodide and cesium and lithium hydroxide have been studie...

629 citations

Journal ArticleDOI
TL;DR: In this paper, the surface properties of nanosized zinc oxide (ZnO) colloids were studied using thermal gravimetric and infrared techniques, and the luminescence properties were evaluated by the energy difference, ΔE, between the band gap and the emission energy which were obtained from the onset of the absorption spectrum and the peak wavelength of the emission spectrum, respectively.
Abstract: Luminescence properties of nanosized zinc oxide (ZnO) colloids greatly depend on their surface properties. These surface properties in turn are largely determined by the method of preparation. The procedure for producing ZnO colloids consists of two major steps: (1) preparing the precursor by reacting zinc acetate with ethanol and (2) hydrolyzing the precursor to form the colloid by using lithium hydroxide. The sample colloids in this study were prepared by hydrolyzing zinc acetate precursors containing various concentrations of Zn2+ with different concentrations of lithium hydroxide. The luminescence properties were evaluated by the energy difference, ΔE, between the band gap and the emission energy which were obtained from the onset of the absorption spectrum and the peak wavelength of the emission spectrum, respectively. The surface properties of ZnO particles were studied using thermal gravimetric and infrared techniques. ZnO particles produced via these procedures are not pure but have acetate (CH3C...

316 citations

Journal ArticleDOI
TL;DR: In this article, the solubility of lithium salts in dimethyl carbonate (DMC) found in solid electrolyte interface (SEI) films was determined, and the results from the computer simulations suggested that the organic salts are more likely to dissolve in DMC than the inorganic salts.
Abstract: The solubility of lithium salts in dimethyl carbonate (DMC) found in solid electrolyte interface (SEI) films was determined. The salt-DMC solutions evaporated, and the salts were transferred into water for ion conductivity measurements. The salts examined included lithium carbonate (Li 2 CO 3 ), lithium oxalate [(LiCO 2 ) 2 ], lithium fluoride (LiF), lithium hydroxide (LiOH), lithium methyl carbonate (LiOCO 2 ,CH 3 ), and lithium ethyl carbonate (LiOCO 2 C 2 H 5 ). The salt molarity in DMC ranged from 9.6 X 10- 4 mol L -1 (LiOCO 2 CH 3 ) to 9 X 10 -5 mol L -1 (Li 2 CO 3 ) in the order of LiOCO 2 CH 3 > LiOCO 2 C 2 H 5 > LiOH > LiF > (LiCO 2 ) 2 > Li 2 CO 3 - X-ray photoelectron spectroscopy measurements on SEI films on the surface of the negative electrode taken from a commercial battery after soaking in DMC for 1 h suggested that the films can dissolve. Separately, the heat of dissolution of the salts was calculated from computer simulations for the same salts, including lithium oxide (Li 2 O), lithium methoxide (LiOCH 3 ), and dilithium ethylene glycol dicarbonate [(CH 2 OCO 2 Li) 2 :LiEDC] in both DMC and ethylene carbonate (EC). The results from the computer simulations suggested that the order in which the salt was likely to dissolve in both DMC and EC was LiEDC > LiOCO 2 CH 3 > LiOH > LiOCO 2 C 2 H 5 > LiOCH 3 > LiF > (LiCO 2 ) 2 > Li 2 CO 3 > Li 2 O. This order agreed with the experiment in DMC within the experimental error. Both experiment and computer simulations showed that the organic salts are more likely to dissolve in DMC than the inorganic salts. The calculations also predicted that the salts dissolve more likely in EC than in DMC in general. Moreover, the results from the study were used to discuss the capacity fading mechanism during the storage of lithium-ion batteries.

298 citations

Journal ArticleDOI
TL;DR: In this paper, LiNi 1 / 3 Mn 1/3 Co 1/ 3 Co/3 O 2 cathode was found to be chemically stable for (1 - x) > 035 without losing any oxygen from the lattice and structurally stable for at least (1 − x) ≥ 023 by maintaining the initial structure.
Abstract: With an aim to develop an understanding of the higher reversible capacities exhibited by the layered LiNi 1 / 3 Mn 1 / 3 Co 1 / 3 O 2 cathode compared to that of LiCoO 2 , its chemical and structural stabilities are investigated by characterizing the samples obtained by chemical lithium extraction The LiNi 1 / 3 Mn 1 / 3 Co 1 / 3 O 2 cathode prepared by firing the coprecipitated hydroxides of the transition metal ions with 7 atom % excess lithium hydroxide exhibits a discharge capacity of 180 mAh/g (at 46-30 V and C/5 rate) with 90% capacity retention in 50 cycles The higher reversible capacity of LiNi 1 / 3 Mn 1 / 3 Co 1 / 3 O 2 is attributed to its better chemical and structural stability down to a lower lithium content of (1 - x) 035 compared to (1 - x) as 05 with the analogous Li 1 - x CoO 2 cathode The Li 1 - x Ni 1 / 3 Mn 1 / 3 Co 1 / 3 O 2 system is found to be chemically stable for (1 - x) > 035 without tending to lose any oxygen from the lattice and structurally stable for at least (1 - x) > 023 by maintaining the initial 03 structure

268 citations

Journal ArticleDOI
TL;DR: In this paper, a hybrid nano-structured manganese dioxide/activated carbon supercapacitor with lithium hydroxide electrolyte was presented, in which the MnO2 positive material was prepared using a solid-state reaction route.

268 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202327
202254
202150
2020125
2019207
2018195