The conversion of naphthalene on SOFC anodes and its impact on the cell performance

In-situ electrochemical impedance analysis of a commercial SOFC stack fueled by real wood gas

“…In addition, some authors suggested that the effect of naphthalene on a SOFC system is dependent on the methane content of the wood gas. When methane levels are high and the SOFC system is subjected to high load current, the naphthalene's influence is more evident [ 28 , 29 , 33 ]. The low methane concentration in real wood gas generated by the allothermal gasifier, when combined with hydrogen dilution and a low external load current, suggests that the potential negative effects of naphthalene on the performance of the SOFC stack may be quite minor.…”

“…Although SOFCs are more resistant to tars than traditional engines, the presence of tars causes carbon deposition at SOFC electrodes, reducing nickel catalytic activity and is considered one of the main concerns for achieving high performance and ensuring safe operation of SOFCs [ [26] , [27] , [28] ]. The behaviour of tars on SOFC anodes has attracted much attention recently [ [29] , [30] , [31] , [32] , [33] , [34] ]. Because the real tar in gasification result is a complicated mixture, most researchers employ a single tar component as a model on SOFC to assess its direct influence on anodes [ 31 , [35] , [36] , [37] , [38] ].…”

“…It is important to note, that the primary objective of the work was to perform a coupling with a real gasification system and obtain a more detailed interpretation via EIS to acquire a more comprehensive interpretation using the DRT approach in contrast to a more general investigation utilizing, for example voltage-current curves. While previous studies [ 7 , 9 , 13 , 21 , 24 , 30 , 31 , 33 , 34 , 37 , 39 , [53] , [54] , [55] ] have investigated the impact of real wood gas on SOFC performance using current-voltage curves, post-mortem techniques or EIS, the present work provides a unique contribution by applying the DRT approach to interpretate the EIS spectra. With the application of DRT analysis approach, it is possible to extract the most dominant time constants or frequencies for the processes involved, providing deeper insights into the electrochemical processes within the SOFC stack.…”

High Temperature Solid Oxide Electrolysis – Technology and Modeling

“…In reformate operation, another ageing effect investigated is the deposition of carbon at the fuel electrode. Its impact on performance is studied in [263][264][265] consequences for the distribution of porosity and current density are shown in [263,265].…”