1310-65-2Relevant articles and documents
Lithium-air and lithium-copper batteries based on a polymer stabilized interface between two immiscible electrolytic solutions (ITIES)
Wu, Borong,Chen, Xiaohui,Zhang, Cunzhong,Mu, Daobin,Wu, Feng
, p. 2140 - 2145 (2012)
We propose and demonstrate the direct application of immiscible aqueous/organic interfaces in lithium-air and lithium-copper batteries. Therefore, the two half-reactions are separated in their respectively favourable electrolytic environments without using any other membranes. In order to prevent water and oxygen from interrupting the reaction in organic phases, we add poly(methyl methacrylate) (PMMA) to propylene carbonate (PC) and investigate its concentration effects using Pt ultramicroelectrodes (UMEs). Pt UMEs provide us the sensitive measure of water contamination as well as the diffusion property of oxygen in the polymer electrolytes. By studying the discharge profiles under various electrolytic conditions, we demonstrate that these batteries are of longer discharge time and higher specific capacity when the polymer electrolyte contains about 10 to 20% of PMMA.
Plane, John M. C.,Rajasekhar, B.
, (1988)
Craggs, J. D.,Smee, J. F.
, p. 531 - 531 (1941)
Gucker, F. T.,Schminke, K. H.
, p. 1013 - 1019 (1933)
Fernelius,Watt
, p. 3482 (1933)
Thermal analysis of lithium peroxide prepared by various methods
Ferapontov,Kokoreva,Kozlova,Ul'Yanova
, p. 891 - 894 (2009)
Behavior of lithium peroxide samples at heating in air was studied by the methods of thermogravimetric analysis (TGA) and differential thermal analysis (DTA). In the temperature range from 32 to 82°C all the studied samples we found to react with water vapor forming lithium peroxide monohydrate as confirmed by the methods of chemical analysis and of qualitative X-ray phase analysis. It was found experimentally that in the temperature range from 340 to 348°C lithium peroxide began to decompose into lithium oxide and oxygen, the starting temperature depended on the method of preparation of lithium peroxide. For all the studied samples polymorphism in the temperature range from 25 to 340°C was not detected.
Ye, Zuo-Guang,Muehll, R. Von Der,Ravez, J.,Hagenmueller, P.
, p. 1153 - 1158 (1988)
Popescu, C.,Jianu, V.,Alexandrescu, Rodica,Mihailescu, I. N.,Morjan, I.,Pascu, M. L.
, p. 269 - 276 (1988)
The effect of 3D carbon nanoadditives on lithium hydroxide monohydrate based composite materials for highly efficient low temperature thermochemical heat storage
Li, Shijie,Huang, Hongyu,Li, Jun,Kobayashi, Noriyuki,Osaka, Yugo,He, Zhaohong,Yuan, Haoran
, p. 8199 - 8208 (2018)
Lithium hydroxide monohydrate based thermochemical heat storage materials were modified with in situ formed 3D-nickel-carbon nanotubes (Ni-CNTs). The nanoscale (5-15 nm) LiOH·H2O particles were well dispersed in the composite formed with Ni-CNTs. These composite materials exhibited improved heat storage capacity, thermal conductivity, and hydration rate owing to hydrogen bonding between H2O and hydrophilic groups on the surface of Ni-CNTs, as concluded from combined results of in situ DRIFT spectroscopy and heat storage performance test. The introduction of 3D-carbon nanomaterials leads to a considerable decrease in the activation energy for the thermochemical reaction process. This phenomenon is probably due to Ni-CNTs providing an efficient hydrophilic reaction interface and exhibiting a surface effect on the hydration reaction. Among the thermochemical materials, Ni-CNTs-LiOH·H2O-1 showed the lowest activation energy (23.3 kJ mol-1), the highest thermal conductivity (3.78 W m-1 K-1) and the highest heat storage density (3935 kJ kg-1), which is 5.9 times higher than that of pure lithium hydroxide after the same hydration time. The heat storage density and the thermal conductivity of Ni-CNTs-LiOH·H2O are much higher than 1D MWCNTs and 2D graphene oxide modified LiOH·H2O. The selection of 3D carbon nanoadditives that formed part of the chemical heat storage materials is a very efficient way to enhance comprehensive performance of heat storage activity components.
Determination of the role of Li2O on the corrosion of lithium hydride
Sifuentes, Adalis,Stowe, Ashley C.,Smyrl, Norm
, p. S271-S273 (2013)
Lithium hydride (LiH) will efficiently react with moisture, forming lithium hydroxide (LiOH) on the surface. Typically, diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy is used for studying the surface corrosion reaction. The presence of a surface lithium oxide (Li2O) layer will enhance hydroxide formation kinetics; however, interference in the DRIFT spectrum prevents the role of Li2O on the reaction kinetics from being fully understood. In the current study, Raman spectroscopy has been used to follow the reaction of LiH with moisture, with particular focus on the Li2O vibrational signature. Three vibrations were observed for Li2O after thermal decomposition of LiOH on the LiH surface in contrast to the single vibration at 515 cm-1 for pure Li2O powder. The multiple peaks are indicative on multiple Li2O chemical domains and are likely the substrate through which unstable LiOH domains are formed during subsequent hydrolysis of the LiH/Li2O system.
Beutler, H.,Brauer, G.,Juenger, H. O.
, p. 347 - 347 (1936)
Extended Chemical Flexibility of Cubic Anti-Perovskite Lithium Battery Cathode Materials
Lai, Kwing To,Antonyshyn, Iryna,Prots, Yurii,Valldor, Martin
supporting information, p. 13296 - 13299 (2018/10/31)
Novel bichalcogenides with the general composition (Li2TM)ChO (TM = Mn, Co; Ch = S, Se) were synthesized by single-step solid-state reactions. These compounds possess cubic anti-perovskite crystal structure with Pm3m symmetry; TM and Li are disordered on the crystallographic site 3c. According to Goldschmidt tolerance factor calculations, the available space at the 3c site is too large for Li+ and TM2+ ions. As cathode materials, all title compounds perform less prominent in lithium-ion battery setups in comparison to the already known TM = Fe homologue; e.g., (Li2Co)SO has a charge density of about 70 mAh g-1 at a low charge rate. Nevertheless, the title compounds extend the chemical flexibility of the anti-perovskites, revealing their outstanding chemical optimization potential as lithium battery cathode material.