TY - GEN AU - Szász,Julian Tibor TI - Charakterisierung und Modellentwicklung von Natur und Funktionalität der Kathoden/Elektrolyt-Grenzfläche von Hochtemperatur-Brennstoffzellen (SOFC) SN - KSP/1000087336 PY - 2019/// PB - KIT Scientific Publishing KW - elektrochemische Impedanzspektroskopie KW - electrochemical impedance spectroscopy KW - FEM-Modellierung KW - korrelative Tomographie KW - secondary phase identification KW - solid oxide fuel cell (SOFC) KW - Zweitphasenidentifikation KW - correlative tomography KW - FEM modeling KW - Hochtemperatur-Brennstoffzelle (SOFC) N1 - Open Access N2 - Solid oxide fuel cells (SOFC) achieve high efficiencies, the lower the internal electrochemical losses are. This work investigates insulating secondary phases at the cathode/electrolyte interface that are formed during fabrication. Full cells and model systems are electrochemically characterized, analyzed by electron microscopy and reconstructed by tomography. A FEM model reveals performance limiting factors. As a result, an optimized production routine is proposed UR - https://www.ksp.kit.edu/9783731508618 UR - https://directory.doabooks.org/handle/20.500.12854/43019 ER -