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首页> 外文期刊>Chemistry: A European journal >Activity and Stability of Ruddlesden-Popper-Type Lan+1NinO3n+1 (n=1, 2, 3, and infinity) Electrocatalysts for Oxygen Reduction and Evolution Reactions in Alkaline Media
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Activity and Stability of Ruddlesden-Popper-Type Lan+1NinO3n+1 (n=1, 2, 3, and infinity) Electrocatalysts for Oxygen Reduction and Evolution Reactions in Alkaline Media

机译：碱性介质中Ruddlesden-Popper型Lan + 1NinO3n + 1（n = 1、2、3和无穷大）电催化剂的活性和稳定性

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Increasing energy demands have stimulated intense research activity on cleaner energy conversion such as regenerative fuel cells and reversible metal-air batteries. It is highly challenging but desirable to develop low-cost bifunctional catalysts for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), the lack of which is currently one of the major limiting components towards commercialization of these technologies. Here, we have conducted a systematic study on the OER and ORR performances of the Ruddlesden-Popper family of Lan+1NinO3n+1 (n=1, 2, 3, and ) in an alkaline medium for the first time. It is apparent that the Ni-O bond lengths and the hyperstoichiometric oxides in the rock-salt layers correlate with the ORR activities, whereas the OER activities appear to be influenced by the OH- content on the surface of the compounds. In our case, the electronic configuration fails to predict the electrocatalytic activity of these compounds. This work provides guidelines to develop new electrocatalysts with improved performances.
机译：不断增长的能源需求刺激了人们对清洁能源转化的积极研究，例如再生燃料电池和可逆金属-空气电池。开发用于氧还原反应（ORR）和氧释放反应（OER）的低成本双功能催化剂是非常具有挑战性的，但是期望开发低成本的双官能催化剂，目前缺乏这种双功能催化剂是这些技术商业化的主要限制因素之一。在这里，我们首次对碱性介质中Lan + 1NinO3n + 1（n = 1、2、3和）的Ruddlesden-Popper家族的OER和ORR性能进行了系统研究。显然，盐岩层中的Ni-O键长和超化学计量氧化物与ORR活性相关，而OER活性似乎受化合物表面OH-含量的影响。在我们的情况下，电子构型无法预测这些化合物的电催化活性。这项工作为开发性能更高的新型电催化剂提供了指导。

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