甲醇管式SOFC防积碳研究及结构设计

Research and structural design of methanol tube-type SOFC to prevent carbon deposition

为了解决甲醇固体氧化物燃料电池(solid oxide fuel cell,SOFC)积碳问题,提出了多孔内管甲醇管式SOFC设计.部分甲醇可以通过多孔内管进入阳极参与反应,进而降低了阳极顶部甲醇浓度及CO分压,并提升该区域的温度,所以有效缓解该区域积碳活性过高的问题,最大积碳活性降低了99%以上.其次,多孔内管甲醇管式SOFC的阳极表面最大温差仅为49.15 K,比传统甲醇管式SOFC的最大温差210.2 K,下降了76.6%,降低了电池热应力.

To address carbon deposition of methanol solid oxide fuel cell(SOFC),this study proposes a design of a porous inner tube methanol tubular SOFC.A portion of the methanol can enter the anode through the porous inner tube,contributing to the reaction.This process effectively reduces the concentration of methanol and the partial pressure of CO at the top of the anode,subsequently raising the temperature in this region.As a result,this design effectively alleviates the issue of excessive carbon deposition activity,leading to a significant reduction of 99%in the maximum carbon deposition rate.Additionally,the maximum temperature difference on the anode′s surface in the porous inner tube methanol tubular SOFC design is only 49.15 K,which is 76.6%lower than the 210.2 K observed in conventional tubular SOFC.This reduction in temperature difference reduces the thermal stress on the cell.