We report on nanocomposite materials that are both active and stable for the oxygen evolution reaction (OER) in alkaline media. Ce_0.8Sr_0.2Co_0.6Ni_0.2Fe_0.2O_3-δ (CSCNF1), Ce_0.8Sr_0.2Co_0.3Ni_0.2Fe_0.5O_3-δ (CSCNF2), and Ce_0.8Sr_0.2Co_0.2Ni_0.1Fe_0.7O_3-δ (CSCNF3) that contain a lanthanide, in the form of Cerium (Ce) in the A site and varied compositions of Co, Ni, and Fe in the B site, were synthesized by a typical sol-gel route and compared with a benchmark nanocomposite, i.e. Ba_0.5Sr_0.5Co_0.8F_0.2O_3-δ, synthesized by the same method. The crystal structure was examined employing X-ray diffraction (XRD) and the textural properties were examined using Fourier transform infrared spectroscopy (FTIR). The morphology and microstructure were examined employing scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The CSCNF1 (n = 1, 2, or 3) nanocomposite materials exhibited high intrinsic activities, by displaying overpotentials of 0.290 V, 0.470 V, and 0.350 V for CSCNF1, CSCNF2, and CSCNF3, respectively, at 10 mA cm⁻², and Tafel slopes of 54.1 mV dec⁻¹, 71.3 mV dec⁻¹, and 62.8 mV dec⁻¹, respectively. CSCNFn (n = 1–3) nanocomposites compared with BSCF nanocomposite established its viability as a good electrocatalyst. They exhibited good electrocatalytic performance and stability and deserve further investigation as electrocatalysts for the OER in alkaline solution.

我们报告了在碱性介质中对于氧释放反应（OER）具有活性和稳定性的纳米复合材料。的Ce _0.8锶_0.2钴_0.6镍_0.2铁_0.2 ø _{3- δ}（CSCNF1），铈_0.8锶_0.2钴_0.3镍_0.2铁_0.5 ø _{3- δ}（CSCNF2）和Ce _0.8锶_0.2钴_0.2镍_0.1铁_0.7 ø _{3- δ}（CSCNF3）通过典型的溶胶-凝胶路线合成了A位点中的铈（Ce）形式和B位点中的Co，Ni和Fe各种组成的镧系元素，并与基准纳米复合材料进行了比较通过相同的方法合成Ba _0.5 Sr _0.5 Co _0.8 F _0.2 O _{3- δ}。使用X射线衍射（XRD）检查晶体结构，并使用傅立叶变换红外光谱（FTIR）检查组织结构。使用扫描电子显微镜（SEM）和高分辨率透射电子显微镜（HRTEM）检查形态和微观结构。CSCNF1（n = 1、2或3）纳米复合材料显示出高的固有活性，在10 mA cm ^-2的CSCNF1，CSCNF2和CSCNF3的过电势分别为0.290 V，0.470 V和0.350 V ，Tafel斜率为54.1毫伏癸^-1，71.3毫伏癸^-1，和62.8毫伏癸^-1，分别。 与BSCF纳米复合材料相比，CSCNFn（n = 1-3）纳米复合材料确立了其作为良好电催化剂的生存能力。它们表现出良好的电催化性能和稳定性，作为碱性溶液中OER的电催化剂值得进一步研究。