Solid oxide fuel cells (SOFC) are highly efficient energy conversion device, but its high operating temperature (800∼1000 C) restricts industrial commercialization. Reducing the operating temperature to <800 C could broaden the selection of materials, improve the reliability of the system, and lower the operating cost. However, traditional perovskite cathode could not both attain the high catalytic activity towards the oxygen reduction reaction and good durability at medium and low temperature range. In contrast to the conventional perovskites, Ruddlesden–Popper perovskites exhibit fast oxygen surface exchange kinetic and excellent stability at medium and low temperatures, and excel both in oxide-conducting fuel cells (O-SOFC) and proton-conducting fuel cells (H-SOFC). In this paper, we try to relate its prominent performance with the crystal structure, main physical properties, and transport mechanism of oxygen ions and protons. We also summarize the current strategy in improving its application in O-SOFC and H-SOFC. Finally, we discuss the challenges and outlook for the future development of RP perovskites in SOFC.

固体氧化物燃料电池（SOFC）是高效的能量转换装置，但是其高工作温度（800〜1000 C）限制了工业化的商业化。将工作温度降低到<800 C可以拓宽材料的选择范围，提高系统的可靠性，并降低运行成本。然而，传统的钙钛矿阴极不能同时获得对氧还原反应的高催化活性和在中低温范围内的良好耐久性。与常规钙钛矿相比，Ruddlesden-Popper钙钛矿在中低温下具有快速的氧表面交换动力学和出色的稳定性，并且在氧化物导电燃料电池（O-SOFC）和质子导电燃料电池（H-SOFC）中均表现出色）。在本文中，我们尝试将其杰出的性能与氧离子和质子的晶体结构，主要物理性质以及传输机制联系起来。我们还总结了当前策略，以改善其在O-SOFC和H-SOFC中的应用。最后，我们讨论了SOFC中RP钙钛矿未来发展的挑战和前景。