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National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
A structure study of high-voltage cathode materials for lithium ion battery using X-ray crystallography
 Kunický, Daniel ; Čech, Ondřej (referee) ; Chladil, Ladislav (advisor)
This diploma thesis deals with the X-Ray crystallography study of structural changes within lithium-ion cells. First part consists of the theoretical discussion about the structural changes in commerce lithium-ion cells with focus on X-Ray crystallography. Then the ex situ, in situ and operando terms are discussed. Verification of the XRD usage is realized on the LiFePO4 material. Experimental part deals with the optimization and preparation of electrochemical cells and the measurements. Finally, results of the Rietveld analysis are discussed.
Detailed record
Effects of the different grinding technology on the properties of Portland cement
 Švéda, Matěj ; Všianský,, Dalibor (referee) ; Dvořák, Karel (advisor)
This diploma thesis compares impact of various high-energy grinding technologies on crystallographic and granulometric properties of portland cement. It also observes the influence of the conventional and high-speed grinding technology on the resulting physical and mechanical properties of portland cement, depending on the storage time.
Detailed record
Use of X-ray diffraction analysis in the optimization of cathode material syntheses for Li-ion batteries
 Kunz, Marek ; Čech, Ondřej (referee) ; Chladil, Ladislav (advisor)
This thesis deals with study of structural changes in electrode materials prepared by spray-dry synthesis at different calcination temperatures using X-ray diffraction analysis. In the theoretical part, the work deals with the principle of XRD, parameters that influence the resulting diffractogram and Rietveld analysis. The part further deals with possible syntheses of cathode materials, calcination, and possible ways of battery degradation. The experimental part focuses on investigating the ideal calcination temperature and time of prepared cathode material samples.
Detailed record
A structure study of high-voltage cathode materials for lithium ion battery using X-ray crystallography
 Kunický, Daniel ; Čech, Ondřej (referee) ; Chladil, Ladislav (advisor)
This diploma thesis deals with the X-Ray crystallography study of structural changes within lithium-ion cells. First part consists of the theoretical discussion about the structural changes in commerce lithium-ion cells with focus on X-Ray crystallography. Then the ex situ, in situ and operando terms are discussed. Verification of the XRD usage is realized on the LiFePO4 material. Experimental part deals with the optimization and preparation of electrochemical cells and the measurements. Finally, results of the Rietveld analysis are discussed.
Detailed record
Effects of the different grinding technology on the properties of Portland cement
 Švéda, Matěj ; Všianský,, Dalibor (referee) ; Dvořák, Karel (advisor)
This diploma thesis compares impact of various high-energy grinding technologies on crystallographic and granulometric properties of portland cement. It also observes the influence of the conventional and high-speed grinding technology on the resulting physical and mechanical properties of portland cement, depending on the storage time.
Detailed record
Study on the impact of the grinding process on the properties of alite
 Ravaszová, Simona ; Všianský,, Dalibor (referee) ; Dvořák, Karel (advisor)
This bachelor thesis deals with the impact of three different grinding technologies for milling and grain crystallographic properties of the synthetically prepared pure alite. It studies the lenght of the milling process and the impact of grinding technology to crystallinity, grain shape and slope of the preffered mineral orientation in preparing specimens for XRD – analysis.
Detailed record

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