Tailoring cobalt‐free La0.5Sr0.5FeO3‐δ cathode with a nonmetal cation‐doping strategy for high‐performance proton‐conducting solid oxide fuel cells
Tailoring cobalt‐free La0.5Sr0.5FeO3‐δ cathode with a nonmetal cation‐doping strategy for high‐performance proton‐conducting solid oxide fuel cells
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DOI：
10.1002/sus2.79
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发表时间：
2022-07
期刊：
影响因子：
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通讯作者：
Yanru Yin;H. Dai;Shoufu Yu;L. Bi;E. Traversa
中科院分区：
文献类型：
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作者：
Yanru Yin;H. Dai;Shoufu Yu;L. Bi;E. Traversa
传统的La0.5Sr0.5FeO3-δ（LSF）阴极采用了非金属掺杂策略，使质子传导固体氧化物燃料电池（H-SOFC）具有高性能。与以往的研究侧重于利用金属氧化物作为掺杂剂，磷，这是一种非金属元素，被用作LSF的阳离子掺杂剂，通过部分取代铁离子，形成新的La0.5Sr0.5Fe0.9P0.1O3-δ（LSFP）化合物。与使用LSF阴极的H-SOFC相比，使用LSFP阴极的H-SOFC显示出两倍的峰值功率密度。实验研究和第一性原理计算都用于揭示LSFP电池高性能的机制。
A nonmetal doping strategy was exploited for the conventional La0.5Sr0.5FeO3‐δ (LSF) cathode, allowing high performance for proton‐conducting solid oxide fuel cells (H‐SOFCs). Unlike previous studies focusing on the utilization of metal oxides as dopants, phosphorus, which is a nonmetal element, was used as the cation dopant for LSF by partially replacing Fe ions to form the new La0.5Sr0.5Fe0.9P0.1O3‐δ (LSFP) compound. The H‐SOFC using the LSFP cathode showed a two‐fold peak power density as compared to that using the LSF cathode. Both experimental studies and first‐principle calculations were used to unveil the mechanisms for the high performance of the LSFP cells.