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Liu H, Xie R, Wang Q, Han J, Han Y, Wang J, Fang H, Qi J, Ding M, Ji W, He B, Lü W. Enhanced OER Performance and Dynamic Transition of Surface Reconstruction in LaNiO 3 Thin Films with Nanoparticles Decoration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207128. [PMID: 36828784 PMCID: PMC10161029 DOI: 10.1002/advs.202207128] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/04/2023] [Indexed: 05/06/2023]
Abstract
In an electrocatalytic process, the cognition of the active phase in a catalyst has been regarded as one of the most vital issues, which not only boosts the fundamental understanding of the reaction procedure but also guides the engineering and design for further promising catalysts. Here, based on the oxygen evolution reaction (OER), the stepwise evolution of the dominant active phase is demonstrated in the LaNiO3 (LNO) catalyst once the single-crystal thin film is decorated by LNO nanoparticles. It is found that the OER performance can be dramatically improved by this decoration, and the catalytic current density at 1.65 V can be enhanced by ≈1000% via ≈109 cm-2 nanoparticle adhesion after extracting the contribution of surface enlargement. Most importantly, a transition of the active phase from LNO to NiOOH via surface reconstruction with the density of LNO nanoparticles is demonstrated. Several mechanisms in terms of this active phase transition are discussed involving lattice orientation-induced change of the surface energy profile, the lattice oxygen participation, and the A/B-site ions leaching during OER cycles. This study suggests that the active phases in transition metal-based OER catalysts can transform with morphology, which should be corresponding to distinct engineering strategies.
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Affiliation(s)
- Huan Liu
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Rongrong Xie
- School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Qixiang Wang
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Jiale Han
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Yue Han
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Jie Wang
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Hong Fang
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Ji Qi
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Meng Ding
- School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Weixiao Ji
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Bin He
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
| | - Weiming Lü
- Spintronics Institute, School of Physics and Technology, University of Jinan, Jinan, 250022, P. R. China
- Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150080, P. R. China
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Fajardo-Puerto E, Elmouwahidi A, Bailón-García E, Pérez-Cadenas AF, Carrasco-Marín F. From Fenton and ORR 2e−-Type Catalysts to Bifunctional Electrodes for Environmental Remediation Using the Electro-Fenton Process. Catalysts 2023. [DOI: 10.3390/catal13040674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Currently, the presence of emerging contaminants in water sources has raised concerns worldwide due to low rates of mineralization, and in some cases, zero levels of degradation through conventional treatment methods. For these reasons, researchers in the field are focused on the use of advanced oxidation processes (AOPs) as a powerful tool for the degradation of persistent pollutants. These AOPs are based mainly on the in-situ production of hydroxyl radicals (OH•) generated from an oxidizing agent (H2O2 or O2) in the presence of a catalyst. Among the most studied AOPs, the Fenton reaction stands out due to its operational simplicity and good levels of degradation for a wide range of emerging contaminants. However, it has some limitations such as the storage and handling of H2O2. Therefore, the use of the electro-Fenton (EF) process has been proposed in which H2O2 is generated in situ by the action of the oxygen reduction reaction (ORR). However, it is important to mention that the ORR is given by two routes, by two or four electrons, which results in the products of H2O2 and H2O, respectively. For this reason, current efforts seek to increase the selectivity of ORR catalysts toward the 2e− route and thus improve the performance of the EF process. This work reviews catalysts for the Fenton reaction, ORR 2e− catalysts, and presents a short review of some proposed catalysts with bifunctional activity for ORR 2e− and Fenton processes. Finally, the most important factors for electro-Fenton dual catalysts to obtain high catalytic activity in both Fenton and ORR 2e− processes are summarized.
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Tang W, Bai J, Zhou P, He Q, Xiao F, Zhao M, Yang P, Liao L, Wang Y, He P, Jia B, Bian L. Polymethylene blue nanospheres supported honeycomb-like NiCo-LDH for high-performance supercapacitors. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mustafa H, Yu Y, Zafar A, Liu Y, Karim S, Javed S, Mehboob S, Sun H, Hussain S, Shah AU, Hussain SZ, Safdar A, Nisar A, Ahmad M. MWCNT synergy for boosting the electrochemical kinetics of V2O5 cathode for lithium-ion batteries. NEW J CHEM 2022. [DOI: 10.1039/d1nj06245j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
V2O5/MWCNT hybrid system has been developed and investigated as cathode in LIBs. The developed electrode shows superior performance as compare to pristine V2O5 and V2O5/rGO hybrid structure due to the synergy between V2O5 and MWCNT.
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Affiliation(s)
- Hamna Mustafa
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
- School of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Yanlong Yu
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, P. R. China
| | - Amina Zafar
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
- Central Analytical Facility Division, PINSTECH, Islamabad 44000, Pakistan
| | - Yanguo Liu
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Shafqat Karim
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
| | - Saqib Javed
- Theoretical Physics Division, PINSTECH, Islamabad 44000, Pakistan
| | | | - Hongyu Sun
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Shafqat Hussain
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
| | - Atta Ullah Shah
- National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | | | - Amna Safdar
- School of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
| | - Amjad Nisar
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
| | - Mashkoor Ahmad
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan
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Ma X, Yang J, Xu X, Yang H, Peng C. NiSe/Ni 3Se 2 on nickel foam as an ultra-high-rate HER electrocatalyst: common anion heterostructure with built-in electric field and efficient interfacial charge transfer. RSC Adv 2021; 11:34432-34439. [PMID: 35494750 PMCID: PMC9042723 DOI: 10.1039/d1ra06183f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/18/2021] [Indexed: 12/20/2022] Open
Abstract
One grand challenge in green hydrogen production is to design efficient HER electrocatalysts for high-rate alkaline water electrolysis. Nickel chalcogenide coatings on nickel foam (NF) are promising HER electrocatalysts, but their high-rate performances are yet to be improved. The current work reports a NiSe/Ni3Se2@NF for alkaline HER, which requires an overpotential of only 336 mV to achieve an ultra-high current density of 1250 mA cm−2, outperforming commercial Pt/C. The low onset potential of NiSe/Ni3Se2@NF is attributed to its morphology, and high surface area, as well as multiple active sites and electronic structure modulation because of the heterostructure. While these features are well-known within the current knowledge framework, new understandings are proposed on its superior high-rate performance. The common-anion feature offers abundant interfacial Ni–Se bonding and low resistance for efficient interfacial charge transfer, whereas the heterovalent-Ni-cation in the heterostructure results in a built-in electric field that further enhances the high-rate performance. This work provides new insights on both the mechanistic and methodological aspects of designing high-performance electrocatalysts operating at high current densities. The NiSe/Ni3Se2 common anion heterostructure is a superior electrocatalyst for ultra-high-rate HER owing to its built-in electric field and efficient interfacial charge transfer.![]()
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Affiliation(s)
- Xin Ma
- School of Resource and Environmental Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Jingbo Yang
- School of Resource and Environmental Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Xiaoqi Xu
- School of Resource and Environmental Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Hangqi Yang
- School of Resource and Environmental Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Chuang Peng
- School of Resource and Environmental Sciences, Wuhan University Wuhan 430072 P. R. China
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