Journal ArticleDOI
A perovskite oxide optimized for oxygen evolution catalysis from molecular orbital principles.
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TLDR
The high activity of BSCF was predicted from a design principle established by systematic examination of more than 10 transition metal oxides, which showed that the intrinsic OER activity exhibits a volcano-shaped dependence on the occupancy of the 3d electron with an eg symmetry of surface transition metal cations in an oxide.Abstract:
The efficiency of many energy storage technologies, such as rechargeable metal-air batteries and hydrogen production from water splitting, is limited by the slow kinetics of the oxygen evolution reaction (OER). We found that Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3–δ (BSCF) catalyzes the OER with intrinsic activity that is at least an order of magnitude higher than that of the state-of-the-art iridium oxide catalyst in alkaline media. The high activity of BSCF was predicted from a design principle established by systematic examination of more than 10 transition metal oxides, which showed that the intrinsic OER activity exhibits a volcano-shaped dependence on the occupancy of the 3d electron with an e g symmetry of surface transition metal cations in an oxide. The peak OER activity was predicted to be at an e g occupancy close to unity, with high covalency of transition metal–oxygen bonds.read more
Citations
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All‐In‐One Perovskite Catalyst: Smart Controls of Architecture and Composition toward Enhanced Oxygen/Hydrogen Evolution Reactions
TL;DR: In this paper, the results of integrated water electrolysis using the hybrid of electrospun La0.5(Ba0.4Sr0.8Fe0.2O3−δ (L 0.5) perovskite nanorods attached to reduced graphene oxide (rGO) nanosheets as bifunctional electrodes are reported.
Journal ArticleDOI
Ni-based layered double hydroxide catalysts for oxygen evolution reaction
Liheng Yang,Liheng Yang,Liheng Yang,Zong Liu,Shun-Peng Zhu,Shun-Peng Zhu,Ligang Feng,Wang Xing,Wang Xing +8 more
TL;DR: A comprehensive overview of Ni-based layered double hydroxides (LDHs) for oxygen evolution reaction (OER) is provided in this paper, where fabrication strategies and in situ characterization are discussed.
Journal ArticleDOI
Self-Supported Porous NiSe2 Nanowrinkles as Efficient Bifunctional Electrocatalysts for Overall Water Splitting
TL;DR: In this paper, a three-dimensional porous nickel diselenide nanowrinkles anchored on nickel foam through fabricating nickel oxalate nanosheets on Nickel foam by immersion, followed by selenization under a selenium vapor atmosphere.
Journal ArticleDOI
Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation
Longcheng Zhang,Jie-Cong Liang,Luchao Yue,Kai Dong,Jun Li,Donglin Zhao,Zerong Li,Sheng-Nan Sun,Yongsong Luo,Qian Liu,Guanwei Cui,Abdulmohsen Ali Alshehri,Xiaodong Guo,Xuping Sun +13 more
TL;DR: In this paper , the authors reported that the benzoate anions-intercalated NiFe-layered double hydroxide nanosheet on carbon cloth (BZ-NiFe-LDH/CC) behaves as a highly efficient and durable monolithic catalyst for alkaline seawater oxidation, affords enlarged interlayer spacing of LDH, inhibits chlorine (electro)chemistry, and alleviates local pH drop of the electrode.
Journal ArticleDOI
Domain Wall Conduction and Polarization‐Mediated Transport in Ferroelectrics
Rama K. Vasudevan,Weida Wu,Jeffrey R. Guest,Arthur P. Baddorf,Anna N. Morozovska,Eugene A. Eliseev,Nina Balke,Valanoor Nagarajan,Peter Maksymovych,Sergei V. Kalinin +9 more
TL;DR: In this paper, a review of recent experimental and theoretical progress in SPM-motivated studies on domain wall conduction in both standard and improper ferroelectrics is presented.
References
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Journal ArticleDOI
Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability
Vojislav R. Stamenkovic,Vojislav R. Stamenkovic,Ben Fowler,Bongjin Simon Mun,Guofeng Wang,Philip N. Ross,Chris Lucas,Nenad M. Markovic +7 more
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Journal ArticleDOI
In Situ Formation of an Oxygen-Evolving Catalyst in Neutral Water Containing Phosphate and Co2+
TL;DR: A catalyst that forms upon the oxidative polarization of an inert indium tin oxide electrode in phosphate-buffered water containing cobalt (II) ions is reported that not only forms in situ from earth-abundant materials but also operates in neutral water under ambient conditions.