Hydrogen storage in liquid organic hydrogen carriers (LOHC) such as the substance system dibenzyltoluene/perhydro-dibenzyltoluene (H0/H18-DBT) offers a promising alternative to conventional methods. In this contribution, we describe the successful demonstration of the dynamic combined operation of a continuously operated LOHC reactor and a PEM (polymer exchange membrane) fuel cell. The fuel cell was operated stable with fluctuating hydrogen release from dehydrogenation of H18-DBT over a total period of 4.5 h, reaching electrical stack powers of 6.6 kW. The contamination with hydrocarbons contained in the hydrogen after activated carbon filtering did not result in any detectable impairment or degradation of the fuel cell. The proposed pressure control algorithm based on a proportional integral (PI) controller proved to be a robust and easy-to-implement approach to enable the dynamic combined operation of LOHC dehydrogenation and PEM fuel cell.

液态有机氢载体 (LOHC) 中的氢储存，如物质系统二苄基甲苯/全氢二苄基甲苯 (H0/H18-DBT) 为传统方法提供了一种有前景的替代方法。在这篇文章中，我们描述了连续运行的 LOHC 反应器和 PEM（聚合物交换膜）燃料电池的动态联合运行的成功演示。燃料电池稳定运行，H18-DBT 脱氢释放的氢气在 4.5 小时内波动，达到 6.6 kW 的电堆功率。活性炭过滤后氢气中所含碳氢化合物的污染不会导致燃料电池的任何可检测的损坏或退化。