Синтез, кристаллическая структура и свойства сложных оксидов со структурой перовскита на основе неодима, щелочноземельных и 3d-переходных металлов Хоссейн Аслам

brief description

Хоссейн Аслам.
Synthesis, crystal structure and properties of complex oxides with the perovskite structure based on neodymium, alkaline earth and 3d-transition metals = Синтез, кристаллическая структура и свойства сложных оксидов со структурой перовскита на основе неодима, щелочноземельных и 3d-переходных металлов : диссертация ... кандидата химических наук : 02.00.04 / Aslam Hossain; [Место защиты: ФГАОУ ВО «Уральский федеральный университет имени первого Президента России Б.Н. Ельцина»]. - Екатеринбург, 2019. - 123 с. : ил.
Оглавление диссертациикандидат наук Хоссейн Аслам
CONTENT
1. LITERATURE REVIEW
1.1 Structural studies of R1-xAxMnO3-δ
1.2 Structural studies of RMn0.5B0.5O3-δ
1.3 Oxygen non-stoichiometry
1.4 Thermal expansion coefficient (TEC)
1.5 Conductivity (σ) and Seebeck coefficient (S)
1.6 Thermodynamic stability of lanthanum manganite and its chemical compatibility with
electrolytes
1.7 The task setting and research overview
2. EXPERIMENTAL TECHNIQUES
2.1 Characteristics of raw materials and sample synthesis
2.2 X-ray Diffraction phase analysis
2.3 Determination of oxygen non-stoichiometry
2.3.1 Thermogravimetric analysis
2.3.2. Iodometric titration technique
2.4 Method for determining thermal expansion
2.4.1 Dilatometric analysis
2.4.2 High temperature x-ray diffraction phase analysis
2.5 Methods of measuring electrical conductivity and Seebeck coefficient
2.6 Method of chemical compatibility test
2.7 Method of impedance spectroscopy
3. SYNTHESIS AND CRYSTAL STRUCTURE OF Nd1-xAxMn0.5B0.5O3-δ (A = Ba, Sr, Ca;
B = Mn, Fe, Co, Ni; x = 0, 0.25)
3.1 Room temperature crystal structure of Nd1-xAxMn0.5B0.5O3-δ (A = Ba, Sr, Ca; B = Mn,
Fe, Co, Ni; x = 0, 0.25)
3.1.1 NdxA1-xMnO3-δ (A = Ba, Sr and Ca; x =0 and 0.25)
3.1.2 Nd1-xAxMn0.5Fe0.5O3−δ (A = Ba, Sr and Ca; x =0 and 0.25)
3.1.3 Nd1−xAxMn0.5Co0.5O3−δ (A = Ba, Sr and Ca; x = 0 and 0.25)
3.1.4 NdNi0.5-xTxMn0.5O3-δ (T = Co, Cu; x=0 0.5)
3.1.5 Nd0.5Ba0.5Mn0.5Fe0.5O3-δ
3.2 HT structural analysis of Nd1-xBaxMn0.5Fe0.5O3−δ (x=0.25 and 0.5),
Nd0.75Ba0.25Mn0.5Co0.5O3−δ and NdNi0.5Mn0.5O3-δ
3.2.1 Nd1-xBaxMn0.5Fe0.5O3−δ (x 0.25 and 0.5)
3.2.2 NdNi0.5Mn0.5O3-δ
4. TEMPERATURE DEPENDENCE OF PHYSICAL AND CHEMICAL PROPERTIES

3
4.1 Oxygen non-stoichiometry of Nd1-xAxMn0.5B0.5O3-δ (A = Ba, Sr, Ca; B = Mn, Fe, Co,
Ni; x = 0, 0.25)
4.1.1 NdxA1-xMnO3-δ (A = Ba, Sr and Ca; x = 0 and 0.25)
4
NdxA1-xMn0.5Fe0.5O3-δ (A = Ba, Sr and Ca; x = 0 and 0.25)
4.1.3 Nd1−xAxMn0.5Co0.5O3−δ (A = Ba, Sr and Ca; x = 0 and 0.25)
4.1.4 NdNi0.5Mn0.5O3-δ
4.1.5 Nd1-xBaxMn0.5Fe0.5O3-δ
4.2 TEC measurements
4.2.1 TEC of Nd1-xBaxMn0.5Fe0.5O3−δ (x = 0.25 and 0.5) and NdNi0.5Mn0.5O3-δ using HT-
XRPD
4.2.2 TEC of Nd0.75Ba0.25Mn0.5(Fe, Co)0.5O3−δ using dilatometry
4.3 Total conductivity (σ) and the Seebeck coefficient (S) of Nd1-xAxMn0.5B0.5O3-δ (A =
Ba, Sr, Ca; B = Mn, Fe, Co, Ni; x = 0, 0.25)
4.3.1 NdxA1-xMnO3-δ (A = Ba, Sr and Ca; x = 0 and 0.25)
4.3.2 NdxA1-xMn0.5Fe0.5O3-δ (A = Ba, Sr and Ca; x = 0 and 0.25)
4.3.3 NdxA1-xMn0.5Co0.5O3-δ (A = Ba, Sr and Ca; x = 0 and 0.25)
5. APPLICATION OF Nd0.5Ba0.5Mn0.5Fe0.5O3−δ AS CATHODS IN SOLID OXIDE FUEL
CELLS
5.1 Study of the chemical compatibility of Nd0.5Ba0.5Mn0.5Fe0.5O3−δ with solid electrolyte
Ce0.8Sm0.2O2-δ
5.2 Impedance spectroscopic study
FINDINGS
List of symbols of letters and adopted abbreviations
LIST OF REFERENCES