CoorsTek Membrane Sciences AS, 0349 Oslo, Norway.
Department of Chemistry, Centre for Materials Science and Nanotechnology, University of Oslo, 0316 Oslo, Norway.
Science. 2022 Apr 22;376(6591):390-393. doi: 10.1126/science.abj3951. Epub 2022 Apr 21.
Proton ceramic reactors offer efficient extraction of hydrogen from ammonia, methane, and biogas by coupling endothermic reforming reactions with heat from electrochemical gas separation and compression. Preserving this efficiency in scale-up from cell to stack level poses challenges to the distribution of heat and gas flows and electric current throughout a robust functional design. Here, we demonstrate a 36-cell well-balanced reactor stack enabled by a new interconnect that achieves complete conversion of methane with more than 99% recovery to pressurized hydrogen, leaving a concentrated stream of carbon dioxide. Comparable cell performance was also achieved with ammonia, and the operation was confirmed at pressures exceeding 140 bars. The stacking of proton ceramic reactors into practical thermo-electrochemical devices demonstrates their potential in efficient hydrogen production.
质子陶瓷反应堆通过将吸热重整反应与电化学气体分离和压缩产生的热量相结合，从氨、甲烷和沼气中高效提取氢气。将从电池级扩展到堆栈级的效率保持在一个稳健的功能设计中，这对热和气流以及整个电流的分布提出了挑战。在这里，我们展示了一个由新的互连体实现的 36 个电池平衡良好的反应堆堆栈，该互连体可以实现甲烷的完全转化，转化率超过 99%，并回收加压氢气，留下浓缩的二氧化碳流。在超过 140 巴的压力下，氨也实现了相当的电池性能，并且操作得到了证实。质子陶瓷反应堆的堆叠成实用的热电化学装置展示了它们在高效制氢方面的潜力。
