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作者 Mali, Amin
書名 Modification of ceramic components for the sodium nickel chloride battery
國際標準書號 9780494739686
book jacket
說明 151 p
附註 Source: Dissertation Abstracts International, Volume: 72-08, Section: B, page: 4914
Thesis (Ph.D.)--McMaster University (Canada), 2011
The ZEBRA battery based on Na/NiCl2 chemistry shows promise for powering electric vehicles and load leveling systems. The ZEBRA cell consists of a liquid sodium negative electrode separated from the positive electrode by a beta"-alumina solid electrolyte. The current state of development of this battery makes use of glass sealing and thermo compression sealing as an integral part of the cell assembly
One objective of the present research was to reduce the thickness of the beta"-alumina electrolyte thickness as a means to improve performance, by lowering the internal cell resistance. The second objective was to develop a ceramic seal with matching thermal expansion coefficient (TEC) to increase battery durability. An added benefit realized with the new ceramic seal was its use for high temperature applications such as emf measurements of binary systems to determine thermodynamic properties
Dense electrolyte tubes with reduced thickness of less than 100 mum and supported on a porous substrate were successfully produced by slip casting. The slip casting parameters, sintering conditions and materials were optimized and electrolyte resistance was measured by a DC method
A ceramic seal was developed from a eutectic mixture of Na2O and Al2O3 and tested in galvanic cells. The reproducibility of the emf data shows that the seal is fully impervious and can sustain a high alkali pressure atmosphere up to 1000°C without cracking or degradation. The seal microstructure revealed liquid phase formation of the seal and diffusion bonding with the lid and tube
The thermodynamic properties and phase relations of the Na-Si binary system were studied by the emf method using Na eta-alumina i-Na galvanic cells over the whole composition range below 600°C. There is very limited solubility of Si in molten Na. Properties of the sodium silicon compounds were determined from the emf measurements
School code: 0197
Host Item Dissertation Abstracts International 72-08B
主題 Energy
Engineering, Materials Science
0791
0794
Alt Author McMaster University (Canada)
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