Engineering highly active oxygen sites in perovskite oxides for stable and efficient oxygen evolution

Xiong, Jie; Zhong, Hong; Li, Jing; Zhang, Xinlei; Shi, Jiawei; Cai, Weiwei; Qu, Konggang; Zhu, Chengzhou; Yang, Zehui; Beckman, Scott P.; Cheng, Hansong

doi:10.1016/j.apcatb.2019.117817

Cited by 89 publications

(58 citation statements)

References 48 publications

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“…268 mV, Figure b), in contrast to the nearly unchanged potential exhibited by the DP material. To the best of our knowledge, the SP/DP material has one of the lowest overpotentials at 10 mA cm −2 in alkaline solution among the reported perovskite oxide OER electrocatalysts (Figure c and Table S3), including DP oxides (e.g., La 2 NiMnO 6 , PrBaCo 2 O 5.75 , Sr 2 Fe 0.8 Co 0.2 Mo 0.65 Ni 0.35 O 6 , and SrCo 0.2 Fe 0.2 W 0.4 O 3−δ ) and SP oxides (e.g., F substituted Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ , SrCo 0.5 Fe 0.5 O 3−δ , SrNb 0.1 Co 0.7 Fe 0.2 O 3−δ nanorods, and LaCo 0.8 V 0.2 O 3 ). Additionally, the SP/DP material has superior catalytic activity to noble metal oxides, such as IrO 2 , hybrids, such as BC1.5MN and LSM‐20‐Co, transition metal phosphides, such as 12‐CoNiP, and spinel oxides, such as CoFe 2 O 4 and Zn 0.35 Co 0.65 O …”

Section: Resultsmentioning

confidence: 99%

“…(b) Chronopotentiometry curve of SP/DP oxide at a fixed current density of 10 mA cm −2 . (c) OER activity of various materials in 1.0 m KOH showing the overpotential at 10 mA cm −2 , including noble metal oxides (1‐IrO 2 ), double perovskite oxides (2‐La 2 NiMnO 6 , 3‐PrBaCo 2 O 5.75 , 4‐Sr 2 Fe 0.8 Co 0.2 Mo 0.65 Ni 0.35 O 6 , and 5‐SrCo 0.2 Fe 0.2 W 0.4 O 3−δ ), single perovskite oxides (6‐F substituted Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ , 7‐SrCo 0.5 Fe 0.5 O 3−δ , 8‐SrNb 0.1 Co 0.7 Fe 0.2 O 3−δ nanorods, and 9‐LaCo 0.8 V 0.2 O 3 ), hybrids (10‐BC1.5MN and 11‐LSM‐20‐Co), transition metal phosphides (12‐CoNiP), and spinel oxides(13‐CoFe 2 O 4 and 14‐Zn 0.35 Co 0.65 O).…”

Section: Resultsmentioning

confidence: 99%

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Bulk and Surface Properties Regulation of Single/Double Perovskites to Realize Enhanced Oxygen Evolution Reactivity

Sun

Guan

et al. 2020

ChemSusChem

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Perovskite‐based oxides have emerged as promising oxygen evolution reaction (OER) electrocatalysts. The performance is closely related to the lattice, electronic, and defect structure of the oxides, which determine surface and bulk properties and consequent catalytic activity and durability. Further, interfacial interactions between phases in a nanocomposite may affect bulk transportation and surface adsorption properties in a similar manner to phase doping except without solubility limits. Herein, we report the development of a single/double perovskite nanohybrid with limited surface self‐reconstruction capability as an OER electrocatalyst. Such superior performance arises from a structure that maintains high crystallinity post OER catalysis, in addition to forming an amorphous layer following the self‐reconstruction of a single perovskite structure during the OER process. In situ X‐ray absorption near edge structure spectroscopy and high‐resolution synchrotron‐based X‐ray diffraction reveal an amorphization process in the hybrid single/double perovskite oxide system that is limited in comparison to single perovskite amorphization, ensuring high catalytic activity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Bulk and Surface Properties Regulation of Single/Double Perovskites to Realize Enhanced Oxygen Evolution Reactivity

Sun

Guan

et al. 2020

ChemSusChem

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“…It allows optimizing the electronic configuration and changing valence states of ions. Xiong et al [ 81 ] prepared F‐doped Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3– δ (BSCF). By partially replacing O with F anion, Co(III) and Fe(III) ions decrease their oxidation states, and the surface O anion is activated to O 2− /O − pair with better oxidative performance.…”

Section: Applicationsmentioning

confidence: 99%

Recent Advances in Perovskite‐Type Oxides for Energy Conversion and Storage Applications

Sun

Alonso

Bian

2020

Advanced Energy Materials

367

192

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Professor John B. Goodenough started his research on perovskite‐type oxides working on random‐access memory with ceramic [La,M(II)]MnO3 in the Lincoln Laboratory, Massachusetts Institute of Technology, more than 60 years ago. Since then perovskite‐type oxides have played vital roles in the field of energy conversion and storage. In this review, a brief overview is given on the structure, defect chemistry, and transport properties of perovskite oxides, especially the mixed‐valent materials with mixed electronic and ionic conductivities. The recent advances of perovskite oxides applications in the oxygen reduction reaction, oxygen evolution reaction, electrochemical water splitting reaction, metal–air batteries, solid‐state batteries, oxygen separation membranes, and solid oxide fuel cells are highlighted. Moreover, some novel design strategies for optimizing performance, like interface engineering, defect engineering, strain modulation are discussed as well. Finally, a perspective is given on how to design high‐performance perovskite oxide based materials for energy conversion and storage applications as well as the challenges involved in this task.

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“…[ 23 ] Furthermore, substituting heteroatoms into perovskites is quite facile to generate favorable oxygen vacancies, thereby enhancing the electrochemical properties. Following this, F substituted BSCF (F‐BSCF), [ 24 ] La x (Ba 0.5 Sr 0.5 ) 1‐ x Co 0.8 Fe 0.2 O 3‐δ (LBSCF), [ 25 ] and Bi 0.1 (Ba 0.5 Sr 0.5 ) 0.9 Co 0.8 Fe 0.2 O 3‐δ (BBSCF) [ 26 ] were spotlighted as highly effective OER catalysts based on the doping engineering. Although these A‐site and O‐site doping strategies effectively enhance the OER performance of BSCF, B‐site coordinated with O anions in perovskites generally stands as the active sites for oxygen‐related reaction intermediates.…”

Section: Figurementioning

confidence: 99%

Materials Engineering in Perovskite for Optimized Oxygen Evolution Electrocatalysis in Alkaline Condition

Dong

Kong

et al. 2020

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Developing robust and highly efficient electrocatalysts for oxygen evolution reaction (OER) is critical for renewable, secure, and emission‐free energy technologies. Perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) has emerged as a promising OER electrocatalyst with desirable intrinsic activity. Inspired by the factor that substituting in transition‐metal sublattice of the perovskite can further optimize the OER activity, herein, nickel‐substituted BSCF is adopted, that is, Ba0.5Sr0.5Co0.8‐xFe0.2NixO3‐δ (x = 0.05, 0.1, 0.2, denoted as BSCFNx, x = 5, 10, 20, respectively), as efficient and stable OER catalysts in alkaline solution. The phase structure, microchemistry, oxygen vacancy, and electrochemical activity of such samples are well‐investigated. Endowed with an overpotential of only 278 mV at 10 mA cm−2 and a Tafel slope of merely 47.98 mV dec−1, BSCFN20 exhibits the optimum OER activity. When constructing a two‐electrode cell with BSCFN20 as anode and Pt/C as cathode (BSCFN20||Pt/C) for water splitting, it only requires a voltage of 1.63 V to achieve 50 mA cm−2, and the BSCFN20||Pt/C remains stable within 80 h at 10 mA cm−2, superior to the state‐of‐the‐art RuO2||Pt/C counterpart. This work provides a feasible strategy for designing stable and highly active perovskite electrocatalysts for future energy storage and conversion.

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Engineering highly active oxygen sites in perovskite oxides for stable and efficient oxygen evolution

Cited by 89 publications

References 48 publications

Bulk and Surface Properties Regulation of Single/Double Perovskites to Realize Enhanced Oxygen Evolution Reactivity

Bulk and Surface Properties Regulation of Single/Double Perovskites to Realize Enhanced Oxygen Evolution Reactivity

Recent Advances in Perovskite‐Type Oxides for Energy Conversion and Storage Applications

Materials Engineering in Perovskite for Optimized Oxygen Evolution Electrocatalysis in Alkaline Condition

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