Activity and Stability of Ruddlesden-Popper-Type Lan+1 Nin O3n+1 (n=1, 2, 3, and ∞) Electrocatalysts for Oxygen Reduction and Evolution Reactions in Alkaline Media

Chemistry : a European Journal
Jie YuZongping Shao

Abstract

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+1 Nin O3n+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.

References

Feb 5, 2011·Chemistry : a European Journal·Shengqian MaDi-Jia Liu
Dec 16, 2011·Chemistry : a European Journal·An-Xiang YinChun-Hua Yan
Dec 15, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Vegar Øygarden, Tor Grande
Jan 24, 2013·Angewandte Chemie·Yao ZhengShi Zhang Qiao
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Oct 10, 2015·Advanced Materials·Yinlong ZhuZongping Shao
Nov 17, 2015·Angewandte Chemie·Dong-Gyu LeeHyun-Kon Song

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Citations

Aug 11, 2016·Chemical Communications : Chem Comm·Dengjie ChenFrancesco Ciucci
Jun 22, 2018·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Omar AllamSeung Soon Jang
Oct 28, 2019·Chemistry : a European Journal·Zhaoyu WangSibo Wang
Sep 18, 2018·ACS Applied Materials & Interfaces·Moumita RanaUjjal K Gautam

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