Complexation with hydroxy host compounds. Part. 4. Structures and thermal stabilities of inclusion compounds with dioxane as the guest

Author(s):  
Susan A. Bourne ◽  
Louise Johnson ◽  
Charles Marais ◽  
Luigi R. Nassimbeni ◽  
Edwin Weber ◽  
...  
1999 ◽  
Vol 23 (7) ◽  
pp. 436-437
Author(s):  
Anita Coetzee ◽  
Luigi R. Nassimbeni ◽  
Hong Su

The kinetics of desolvation of the inclusion compounds formed between the diol host and 2-, 3- and 4-methylcyclohexanones show a compensation effect in their Arrhenius parameters.


2001 ◽  
Vol 57 (3) ◽  
pp. 394-398 ◽  
Author(s):  
Luigi R. Nassimbeni ◽  
Hong Su

The crystal structures of the inclusion compounds formed between the host 2,2′-dihydroxy-1,1′-binaphthyl and the three picoline isomers have been elucidated and their lattice energies calculated. The selectivities of enclathration by the host have been measured by competition experiments. The thermal stabilities and activation energies of desolvation of the compounds have been determined. The kinetics of desolvation are correlated to the structures.


2002 ◽  
Vol 58 (2) ◽  
pp. 251-259 ◽  
Author(s):  
Luigi R. Nassimbeni ◽  
Hong Su

The diol host, 1,1′-bis-(4-hydroxyphenyl)cyclohexane (DHPC) and a number of xylidine isomers as guests formed a series of inclusion compounds that gave rise to various host:guest ratios controlled by crystallization temperatures. For the host DHPC with a particular xylidine isomer, the number of guests included generally decreases as the crystallization temperature increases. The crystal structures of these host–guest compounds were elucidated using single-crystal X-ray diffraction. Their thermal stabilities were characterized by TG and DSC analysis. The selectivity of enclathration by the host was measured by carrying out a series of competition experiments. The kinetics of guest decomposition were studied using isothermal and non-isothermal methods and reconciled with the crystal structures.


2019 ◽  
Author(s):  
Xiaohan Wu ◽  
Juliette Billaud ◽  
Iwan Jerjen ◽  
Federica Marone ◽  
Yuya Ishihara ◽  
...  

<div> <div> <div> <p>All-solid-state batteries are considered as attractive options for next-generation energy storage owing to the favourable properties (unit transference number and thermal stabilities) of solid electrolytes. However, there are also serious concerns about mechanical deformation of solid electrolytes leading to the degradation of the battery performance. Therefore, understanding the mechanism underlying the electro-mechanical properties in SSBs are essentially important. Here, we show three-dimensional and time-resolved measurements of an all-solid-state cell using synchrotron radiation x-ray tomographic microscopy. We could clearly observe the gradient of the electrochemical reaction and the morphological evolution in the composite layer. Volume expansion/compression of the active material (Sn) was strongly oriented along the thickness of the electrode. While this results in significant deformation (cracking) in the solid electrolyte region, we also find organized cracking patterns depending on the particle size and their arrangements. This study based on operando visualization therefore opens the door towards rational design of particles and electrode morphology for all-solid-state batteries. </p> </div> </div> </div>


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