1
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Mahmoudi E, Asghari E, Delibaş N, Niaei A. Application of response surface methodology for optimization of the test condition of oxygen evolution reaction over La 0.8Ba 0.2CoO 3 perovskite-active carbon composite. Sci Rep 2023; 13:22878. [PMID: 38129452 PMCID: PMC10739840 DOI: 10.1038/s41598-023-49836-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
The Experimental Design was applied to optimize the electrocatalytic activity of La0.8Ba0.2CoO3 perovskite oxide/Active Carbon composite material in the alkaline solution for the Oxygen Evolution Reaction. After the preparation of La0.8Ba0.2CoO3, and structural characterizations, the experimental design was utilized to determine the optimal amount of the composite material and testing conditions. The overpotential was defined as the response variable, and the mass ratio of perovskite/active carbon, Potassium hydroxide (KOH) concentration, and Poly(vinylidene fluoride) (PVDF) amount were considered effective parameters. The significance of model terms is demonstrated by P-values less than 0.0500. The proposed prediction model determined the optimal amounts of 0.665 mg of PVDF, a KOH concentration of 0.609 M, and A perovskite/Active Carbon mass ratio of 2.81 with 308.22 mV overpotential (2.27% greater than the actual overpotential). The stability test of the optimized electrode material over 24 h suggests that it could be a good candidate electrocatalyst for OER with reusability potential.
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Affiliation(s)
- Elham Mahmoudi
- Department of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran
| | - Elnaz Asghari
- Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Nagihan Delibaş
- Department of Physics, Faculty of Art and Science, Sakarya University, Sakarya, Turkey
| | - Aligholi Niaei
- Department of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, 5166616471, Iran.
- Department of Physics, Faculty of Art and Science, Sakarya University, Sakarya, Turkey.
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2
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Liu J, Yu Z, Huang J, Yao S, Jiang R, Hou Y, Tang W, Sun P, Huang H, Wang M. Redox-active ligands enhance oxygen evolution reaction activity: Regulating the spin state of ferric ions and accelerating electron transfer. J Colloid Interface Sci 2023; 650:1182-1192. [PMID: 37478735 DOI: 10.1016/j.jcis.2023.07.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/27/2023] [Accepted: 07/13/2023] [Indexed: 07/23/2023]
Abstract
Metal-organic frameworks (MOFs) are considered as one of the most promising catalysts for oxygen evolution reaction (OER). However, only a few have introduced redox-active ligands into MOFs and explored their role in the OER process. In this work, we synthesized FeNi DHBQ/NF using the redox-active ligand 2,5-dihydroxy-1,4-benzoquinone (DHBQ), which exhibited excellent redox activity and required only 207 and 242 mV overpotentials to achieve current densities of 10 and 100 mA cm-2. Our research confirms that (i) the doping of Fe leads to the formation of Ni → O → Fe electron transfer channels in the MOFs and stronger electron transfer, attributed to the stronger d-π conjugation between the metal center and the ligand and reduced the d-orbital crystal field splitting energy of Fe3+; (ii) the rate determination step (RDS) in the OER process of the catalyst is the formation of O*, while Fe and redox-active ligands effectively regulate the adsorption energy of oxygen-containing intermediates, reducing the energy barrier of the RDS; (iii) the redox-active ligands can act as "electron reservoirs" in the electrochemical process, making Ni more readily oxidized to Ni3+ or even Ni4+ at low potentials, which is beneficial to the subsequent OER process.
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Affiliation(s)
- Jing Liu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China.
| | - Jun Huang
- School of Civil Engineering and Architecture, Guangxi Minzu University, Nanning 530004, PR China
| | - Shuangquan Yao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China
| | - Ronghua Jiang
- School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan 512005, PR China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Wenjun Tang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Pengxin Sun
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Hongcheng Huang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China
| | - Mengqi Wang
- College of Computer Science and Technology, Shandong University of Technology, Zibo 255090, PR China
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3
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Li SF, Zheng J, Yan D. Cationic Defect Engineering in Perovskite La 2CoMnO 6 for Enhanced Electrocatalytic Oxygen Evolution. Inorg Chem 2023. [PMID: 37384798 DOI: 10.1021/acs.inorgchem.3c00987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
The urgent need to promote the development of sustainable energy conversion requires exploration of highly efficient oxygen evolution reaction (OER) electrocatalysts. Defect engineering is a promising approach to address the inherent low electrical conductivity of metal oxides and limited reaction sites, for use in clean air applications and as electrochemical energy-storage electrocatalysts. In this article, oxygen defects are introduced into La2CoMnO6-δ perovskite oxides through the A-site cation defect strategy. By tuning the content of the A-site cation, oxygen defect concentration and corresponding electrochemical OER performance have been greatly improved. As a result, the defective La1.8CoMnO6-δ (L1.8CMO) catalyst exhibits exceptional OER activity with an overpotential of 350 mV at 10 mA cm-2, approximately 120 mV lower than that of the pristine perovskite. This enhancement can be attributed to the increase in surface oxygen vacancies, optimized eg occupation of transition metal at the B-site, and enlarged Brunauer-Emmett-Teller surface area. The reported strategy facilitates the development of novel defect-mediated perovskites in electrocatalysis.
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Affiliation(s)
- Shu-Fang Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| | - Jie Zheng
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
| | - Dong Yan
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
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4
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Shuai Y, Liu S, Wang Y, Zhou W, Qi X, Liu Y. The influence of MOF modification on oxygen evolution and reduction reaction of Fe-doped GdBaCo2O5+δ perovskite. CATAL COMMUN 2023. [DOI: 10.1016/j.catcom.2022.106584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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5
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Revealing the Doping Effect of Cu
2+
on SrSnO
3
Perovskite Oxides for CO
2
Electroreduction. ChemElectroChem 2022. [DOI: 10.1002/celc.202200635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Li SF, Zheng J, Hu L, Ma Y, Zhao S, Zhu CH, Yan D. Sr‐doped Double Perovskite La2CoMnO6 to Promote the Oxygen Evolution Reaction Activity. ChemElectroChem 2022. [DOI: 10.1002/celc.202200475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shu-Fang Li
- Anhui Normal University College of Chemistry and Materials Science No.189 Jiuhua South Road 241002 Wuhu CHINA
| | - Jie Zheng
- Anhui Normal University College of Chemistry and Materials Science CHINA
| | - Liang Hu
- Anhui Normal University College of Chemistry and Materials Science CHINA
| | - Yao Ma
- Anhui Normal University College of Chemistry and Materials Science CHINA
| | - Shuang Zhao
- Sun Yat-Sen University School of Chemistry CHINA
| | | | - Dong Yan
- Anhui Normal University College of Chemistry and Materials Science CHINA
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7
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Study on the Effect of A/B Site Co-Doping on the Oxygen Evolution Reaction Performance of Strontium Cobaltite. METALS 2022. [DOI: 10.3390/met12060991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The perovskite oxide SrCoO3−x is a promising oxygen electrocatalyst for renewable energy storage and conversion technologies. Here, A, B-site Co-doped perovskite Sr0.5Ba0.5Co0.95Mn0.05O3−x nanoparticles were rationally designed and synthesized by the sol-gel method with an average size of 30–40 nm. It has a remarkable intrinsical activity and stability in 1 M KOH solution. Compared with other A-site (SraA1−aCoO3−x A=Ba, Ca) and B-site doped perovskite (SrCobR1−bO3−x R=Mn, Fe, Ni, B) catalysts, Sr0.5Ba0.5Co0.95Mn0.05O3−x exhibits superior oxygen evolution reaction (OER) performance, smaller Tafel slope, and lower overpotential. The high electrochemical performance of Sr0.5Ba0.5Co0.95Mn0.05O3−x is attributed to its optimized crystal structure and the increase in the content of Co3+. This study demonstrates that highly symmetrical cubic perovskite structure catalytic displays better OER performance.
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8
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Enhanced oxygen and hydrogen evolution activities of Pt/LaCoO3 perovskite oxide via in-situ exsolution of Pt nanoparticles. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02033-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Liu X, Wang Y, Fan L, Zhang W, Cao W, Han X, Liu X, Jia H. Sm0.5Sr0.5Co1−xNixO3−δ—A Novel Bifunctional Electrocatalyst for Oxygen Reduction/Evolution Reactions. Molecules 2022; 27:molecules27041263. [PMID: 35209051 PMCID: PMC8877539 DOI: 10.3390/molecules27041263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/10/2022] [Accepted: 02/10/2022] [Indexed: 11/16/2022] Open
Abstract
The development of non-precious metal catalysts with excellent bifunctional activities is significant for air–metal batteries. ABO3-type perovskite oxides can improve their catalytic activity and electronic conductivity by doping transition metal elements at B sites. Here, we develop a novel Sm0.5Sr0.5Co1−xNixO3−δ (SSCN) nanofiber-structured electrocatalyst. In 0.1 M KOH electrolyte solution, Sm0.5Sr0.5Co0.8Ni0.2O3−δ (SSCN82) with the optimal Co: Ni molar ratio exhibits good electrocatalytic activity for OER/ORR, affording a low onset potential of 1.39 V, a slight Tafel slope of 123.8 mV dec−1, and a current density of 6.01 mA cm−2 at 1.8 V, and the ORR reaction process was four-electron reaction pathway. Combining the morphological characteristic of SSCN nanofibers with the synergistic effect of cobalt and nickel with a suitable molar ratio is beneficial to improving the catalytic activity of SSCN perovskite oxides. SSCN82 exhibits good bi-functional catalytic performance and electrochemical double-layer capacitance.
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10
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Wang X, Zhou Y, Luo J, Sun F, Zhang J. Synthesis of V-doped urchin-like NiCo2O4 with rich oxygen vacancies for electrocatalytic oxygen evolution reactions. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Yan J, Xia M, Zhu C, Chen D, Du F. Perovskite With Tunable Active-Sites Oxidation State by High-Valence W for Enhanced Oxygen Evolution Reaction. Front Chem 2022; 9:809111. [PMID: 35083197 PMCID: PMC8784603 DOI: 10.3389/fchem.2021.809111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 11/18/2021] [Indexed: 11/25/2022] Open
Abstract
Perovskite oxides have been established as a promising kind of catalyst for alkaline oxygen evolution reactions (OER), because of their regulated non-precious metal components. However, the surface lattice is amorphous during the reaction, which gradually decreases the intrinsic activity and stability of catalysts. Herein, the precisely control tungsten atoms substituted perovskite oxides (Pr0.5Ba0.5Co1-xWxO3-δ) nanowires were developed by electrostatic spinning. The activity and Tafel slope were both dependent on the W content in a volcano-like fashion, and the optimized Pr0.5Ba0.5Co0.8W0.2O3-δ exhibits both excellent activity and superior stability compared with other reported perovskite oxides. Due to the outermost vacant orbitals of W6+, the electronic structure of cobalt sites could be efficiently optimized. Meanwhile, the stronger W-O bond could also significantly improve the stability of latticed oxide atoms to impede the generation of surface amorphous layers, which shows good application value in alkaline water splitting.
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12
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Xie W, Deng W, Hu J, Gai Y, Li X, Zhang J, Long D, Qiao S, Jiang F. Construction of bimetallic FeCo–SA/DABCO nanosheets by modulating the electronic structure for improved electrocatalytic oxygen evolution. CrystEngComm 2022. [DOI: 10.1039/d2ce01055k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For energy conversion and storage, the electrochemical oxygen evolution process (OER) is the crucial half-reaction process.
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Affiliation(s)
- Wenshuo Xie
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Wei Deng
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Junbo Hu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Yuping Gai
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Xiang Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Jingjing Zhang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Dewu Long
- Key Laboratory in Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Shanlin Qiao
- College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Fei Jiang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
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13
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Liu D, Zhou P, Bai H, Ai H, Du X, Chen M, Liu D, Ip WF, Lo KH, Kwok CT, Chen S, Wang S, Xing G, Wang X, Pan H. Development of Perovskite Oxide-Based Electrocatalysts for Oxygen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2101605. [PMID: 34310054 DOI: 10.1002/smll.202101605] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/18/2021] [Indexed: 06/13/2023]
Abstract
Perovskite oxides are studied as electrocatalysts for oxygen evolution reactions (OER) because of their low cost, tunable structure, high stability, and good catalytic activity. However, there are two main challenges for most perovskite oxides to be efficient in OER, namely less active sites and low electrical conductivity, leading to limited catalytic performance. To overcome these intrinsic obstacles, various strategies are developed to enhance their catalytic activities in OER. In this review, the recent developments of these strategies is comprehensively summarized and systematically discussed, including composition engineering, crystal facet control, morphology modulation, defect engineering, and hybridization. Finally, perspectives on the design of perovskite oxide-based electrocatalysts for practical applications in OER are given.
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Affiliation(s)
- Dong Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Pengfei Zhou
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Haoyun Bai
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Haoqiang Ai
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, 999078, China
| | - Xinyu Du
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, 999078, China
| | - Mingpeng Chen
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Di Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Weng Fai Ip
- Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, 999078, China
| | - Kin Ho Lo
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, 999078, China
| | - Chi Tat Kwok
- Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, 999078, China
| | - Shi Chen
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Shuangpeng Wang
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Guichuan Xing
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
| | - Xuesen Wang
- Department of Physics, National University of Singapore, Singapore, 117542, Singapore
| | - Hui Pan
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR, 999078, China
- Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR, 999078, China
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14
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Liang Y, Ye D, Han N, Liang P, Wang J, Yang G, Zhang C, He X, Chen M, Zhang C. Nanoporous silver-modified LaCoO3-δ perovskite for oxygen reduction reaction. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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15
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Thomas J, Kunnathulli AP, Vazhayil A, Thomas N. Influence of the Amount of Carbon during the Synthesis of LaFe 0.8Co 0.2O 3/Carbon Hybrid Material in Oxygen Evolution Reaction. ACS OMEGA 2021; 6:17566-17575. [PMID: 34278142 PMCID: PMC8280668 DOI: 10.1021/acsomega.1c02074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/17/2021] [Indexed: 05/18/2023]
Abstract
The oxygen evolution reaction (OER) and the hydrogen evolution reaction occurred at the anode and cathode, which depends on the electronic structure, morphology, electrochemically active surface area, and charge-transfer resistance of the electrocatalyst. Transition metals like cobalt, nickel, and iron have better OER and oxygen reduction reaction activities. At the same time, transition-metal oxide/carbon hybrid has several applications in electrochemical energy conversion reactions. The rich catalytic site of transition metals and the excellent conductivity of carbon material make these materials as a hopeful electrocatalyst in OER. Carbon-incorporated LaFe0.8Co0.2O3 was prepared by a simple solution combustion method for the development of the best performance of the electrocatalyst. The catalyst can deliver 10 mA/cm2 current density at an overpotential of 410 mV with better catalytic stability. The introduction of carbon material improves the dispersion ability of the catalyst and the electrical conductivity. The Tafel slope and onset potential of the best catalyst are 49.1 mV/dec and 1.55 V, respectively.
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Affiliation(s)
- Jasmine Thomas
- Department
of Chemistry, Sree Narayana College, Kannur 670007, Kerala, India
| | | | - Ashalatha Vazhayil
- Department
of Chemistry, Nirmalagiri College, Kannur 670701, Kerala, India
| | - Nygil Thomas
- Department
of Chemistry, Nirmalagiri College, Kannur 670701, Kerala, India
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16
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Yi Y, Wu Q, Li J, Yao W, Cui C. Phase-Segregated SrCo 0.8Fe 0.5-xO 3-δ/Fe xO y Heterostructured Catalyst Promotes Alkaline Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:17439-17449. [PMID: 33829757 DOI: 10.1021/acsami.0c22355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Perovskite oxide is a promising alternative to noble metal electrocatalysts for the oxygen evolution reaction (OER). However, as one of the most active oxide catalysts, cubic SrCoO3 presents poor OER performance relative to the theoretically predicted activity. Appropriate introduction of a guest component in the lattice and surface could largely promote the OER activity. Herein, we present a thermal-induced phase-segregation strategy to synthesize a heterostructured SrCo0.8Fe0.5-xO3-δ/FexOy (SC8F5) catalyst for OER. This novel perovskite/Fe3O4 heterostructure allows us to enhance the electrical conductivity ability, increase the Co oxidation state, and activate the surface oxygen to active oxygen species (O22-/O-) for efficient OER. In contrast to the poor stability of SrCo0.8Fe0.2O3-δ, we found that the SC8F5 heterostructure with segregated Fe3O4 on the surface can mitigate surface reconstruction and stabilize the catalyst structure, thereby increasing catalytic stability.
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Affiliation(s)
- Yunan Yi
- Molecular Electrochemistry Laboratory, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Qianbao Wu
- Molecular Electrochemistry Laboratory, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Junshan Li
- Molecular Electrochemistry Laboratory, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Weitang Yao
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Chunhua Cui
- Molecular Electrochemistry Laboratory, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
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17
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Li W, Yin Y, Xu K, Li F, Maliutina K, Wu Q, Li C, Zhu B, Fan L. Enhancement of oxygen evolution activity of perovskite (La0.8Sr0.2)0.95MnO3-δ electrode by Co phase surface modification. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.02.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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18
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MOF-derived V-CoxP@NC nanoarchitectures for highly enhanced electrocatalytic water splitting through electronical tuning. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136850] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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19
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Li S, Li YL, Zhang ZG, Chen XY, Xiao H, Lin L, Wu WQ, Wu XY, Jiang XY. LaCoO3-modified RuO2–TiO2/Ti electrode as an efficient electrocatalyst for oxygen evolution reaction. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01424-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Zhao C, Li N, Zhang R, Zhu Z, Lin J, Zhang K, Zhao C. Surface Reconstruction of La 0.8Sr 0.2Co 0.8Fe 0.2O 3-δ for Superimposed OER Performance. ACS APPLIED MATERIALS & INTERFACES 2019; 11:47858-47867. [PMID: 31790190 DOI: 10.1021/acsami.9b13834] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Perovskites have become important OER electrocatalysts. Herein, as-prepared La0.8Sr0.2Co0.8Fe0.2O3-δ (LSCF-0) is chosen as a sample to exhibit the superimposed effect of surface reconstruction accompanied by reduction of Co3+ to Co2+ on the further improvement of its activity and stability. As-synthesized LSCF-0 perovskite is chemically treated by simply immersing in an aqueous solution of NaBH4 for 1.0 h at room temperature. The optimized LSCF (LSCF-2) owns an amorphous layer consisting of nanosized particles of ∼20 nm (vs smooth bulk crystalline surface for untreated LSCF), which exhibits superior OER performance to LSCF-0. LSCF-2 has an overpotential of 248 mV (10 mA cm-2) and a Tafel slope of 51 mV dec-1 (vs 355 mV and 76 mV dec-1 for LSCF-0 and 381 mV and 91 mV dec-1 for LCO) and an excellent cycle stability for 20 h running. This work supplies a new strategy to enhance OER performance through surface reconstruction of as-prepared perovskites.
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Affiliation(s)
- Chunhua Zhao
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Nan Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Ruizhi Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Zhaoqiang Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Jiahao Lin
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Kefu Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
| | - Chongjun Zhao
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering , East China University of Science and Technology , Shanghai 200237 , P. R. China
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21
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Peng X, Chen X, Liu T, Lu C, Sun M, Ding F, Wang Y, Zou P, Wang X, Zhao Q, Rao H. Rose-like Nanocomposite of Fe-Ni Phosphides/Iron Oxide as Efficient Catalyst for Oxygen Evolution Reaction. Chem Asian J 2019; 14:2744-2750. [PMID: 31222970 DOI: 10.1002/asia.201900489] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/15/2019] [Indexed: 11/08/2022]
Abstract
In order to accelerate the reaction rate of water splitting, it is of immense importance to develop low-cost, stable and efficient catalysts. In this study, the facile synthesis of a novel rose-like nanocomposite catalyst (Ni2 P/Fe2 P/Fe3 O4 ) is reported. The synthesis process includes a solvothermal step and a phosphatization step to combine iron oxides and iron-nickel phosphides. Ni2 P/Fe2 P/Fe3 O4 performs well in catalyzing oxygen evolution reaction, with a very low overpotential of 365 mV to reach 10 mA cm-2 current density. The Tafel slope is as low as 59 mV dec-1 . Ni2 P/Fe2 P/Fe3 O4 has a large double-layer capacitance that contributes to a high electrochemically active area. Moreover, this catalyst is very stable for long-term use. Therefore, the Ni2 P/Fe2 P/Fe3 O4 catalyst has a high potential for use in oxygen evolution reactions.
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Affiliation(s)
- Xuerong Peng
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Xuchun Chen
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Tao Liu
- College of Information Engineering, Sichuan Agricultural University, Xinkang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Changfang Lu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Mengmeng Sun
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Fang Ding
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yanying Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Ping Zou
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Xianxiang Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Qingbiao Zhao
- Key Laboratory of Polar Materials and Devices (MOE), Department of Optoelectronics, East China Normal University, Shanghai, 200241, P. R. China
| | - Hanbing Rao
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
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22
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Wang C, Zeng L, Guo W, Gong C, Yang J. Enhancing oxygen and hydrogen evolution activities of perovskite oxide LaCoO3via effective doping of platinum. RSC Adv 2019; 9:35646-35654. [PMID: 35528107 PMCID: PMC9074704 DOI: 10.1039/c9ra05491j] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/14/2019] [Indexed: 01/20/2023] Open
Abstract
In this study, a series of perovskite oxides LaCo1−xPtxO3−δ (x = 0, 0.02, 0.04, 0.06, and 0.08) were prepared by the citric acid–ethylenediaminetetraacetic acid (CA–EDTA) complexing sol–gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Then, the samples were investigated as OER and HER bifunctional electrocatalysts in alkaline media. Compared with other catalysts, LaCo0.94Pt0.06O3−δ had good stability and presented more activity at a lower overpotential of 454 mV (at 10 mA cm−2), a lower Tafel slope value of 86 mV dec−1 and a higher mass activity of 44.4 A g−1 for OER; it displayed a lower overpotential of 294 mV (at −10 mA cm−2), a lower Tafel slope value of 148 mV dec−1 and a higher mass activity of −34.5 A g−1 for HER. The improved performance might depend on a larger ECSA, faster charge transfer rate and higher ratio of the highly oxidative oxygen species (O22−/O−). Furthermore, the eg orbital filling of Co approaching 1.2 in the B site might play a leading role. Among the perovskite LaCo1−xPtxO3−δ catalysts, LaCo0.94Pt0.06O3−δ proved best for catalyzing OER/HER, with η = 454/294 mV, which might be attributed to LCP6 having the eg orbital filling of Co closest to 1.2.![]()
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Affiliation(s)
- Caiyun Wang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Lirong Zeng
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Wei Guo
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Cairong Gong
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Jing Yang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- P. R. China
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