Engineering unique Fe(SexS1−x)2 nanorod bundles for boosting oxygen evolution reaction

Jing, Zhongxin; Zhao, Qingyun; Zheng, Dehua; Xu, Huizhong; Sun, Lei; Geng, Jiahui; Zhou, Qiannan; Lin, Jianjian

doi:10.1016/j.cej.2021.129426

Cited by 33 publications

(10 citation statements)

References 52 publications

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“…As well, Figure S3c displayed the spectrum of O 1s that could be arranged into three peaks. It was inferred that iron hydroxide was formed on the catalyst surface during the OER stage based on the main peak (530.2 eV), the M‐OH peak (531.8 eV), and the adsorbed H 2 O peak (532.6 eV) [30] . Previous research reported that metals in the catalyst with higher oxidation states would be more active in the OER process.…”

Section: Resultsmentioning

confidence: 99%

“…It was inferred that iron hydroxide was formed on the catalyst surface during the OER stage based on the main peak (530.2 eV), the M-OH peak (531.8 eV), and the adsorbed H 2 O peak (532.6 eV). [30] Previous research reported that metals in the catalyst with higher oxidation states would be more active in the OER process. In electro-catalysis, highly oxidized metal cations have been proposed as active sites.…”

Section: Resultsmentioning

confidence: 99%

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FeSe/FeSe₂ Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

et al. 2022

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A key consensus of implementing large-scale water splitting is developing highly efficient, durable, and earth-abundant electrocatalysts for oxygen evolution reaction (OER). In recent years, the Fe-based materials used in OER have attracted researchers' great attention around the globe, and Fe has been identified as the OER active sites. In this study, we firstly synthesized the coral-like FeSe/FeSe 2 heterostructure catalyst via a one-pot solvothermal method. We demonstrated that different components of FeSe/FeSe 2 heterostructure can facilitate the electron transfer process of the system, where a high Fe charge state promotes OER performance, rendering the coral-like FeSe/FeSe 2 heterostructure to be more promising Fe-based electrocatalyst for oxygen evolution reaction in alkaline. As expected, the asprepared FeSe/FeSe 2 heterostructure with highly charged iron and negatively charged selenium species exhibited better OER performance and needed only an overpotential of 309 mV to achieve an anodic current density of 10 mA cm À 2 . In addition, the catalyst had quick kinetics and good durability in alkaline medium. The present study would open up a potential avenue for the development of highly active non-noble-metal electrocatalysts.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

FeSe/FeSe₂ Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

et al. 2022

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“…The peaks located at 365, 491, and 783 cm −1 are assigned to NiS and NiSe coordination bonds. [ 27a,30 ] However, these peaks of Ni(S 0.51 Se 0.49 ) 2 @NC material slightly shift to a higher wavenumber due to the lattice changes of Ni(S 0.51 Se 0.49 ) 2 after simultaneously incorporating S and Se, [ 31 ] as indicated in XRD patterns. The strong 2D characteristic peak of graphitic carbon at 2693 cm −1 also proves the presence of layered graphene in Ni(S 0.51 Se 0.49 ) 2 @NC.…”

Section: Resultsmentioning

confidence: 99%

Dianion Induced Electron Delocalization of Trifunctional Electrocatalysts for Rechargeable Zn–Air Batteries and Self‐Powered Water Splitting

Ding

Jin

et al. 2022

Adv Funct Materials

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The development of low-cost multifunctional electrocatalysts with high activity for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) is critical for the advancement of sophisticated energy conversion and storage devices. Herein, a trifunctional Ni(S 0.51 Se 0.49 ) 2 @NC catalyst is designed and fabricated using a dianionic regulation strategy. Synchrotron radiation X-ray absorption spectroscopy and density functional theory calculations reveal that simultaneous sulfidation and selenization can induce the electronic delocalization of Ni(S 0.51 Se 0.49 ) 2 active sites to enhance the adsorption of *OOH/*OH intermediate for ORR/OER and H* intermediate for HER. The OER and HER mechanisms are revealed by in situ Raman spectroscopy. The Ni(S 0.51 Se 0.49 ) 2 @NC exhibits trifunctional catalytic activity for the HER (111 mV at 10 mA cm −2 ), OER (320 mV at 10 mA cm −2 ), and ORR (half-wave potential of 0.83 V). The rechargeable zinc-air batteries (ZABs) exhibit an open-circuit voltage of 1.46 V, a specific capacity of 799.1 mAh g −1 , and excellent stability for 1000 cycles. The water electrolytic cell using Ni(S 0.51 Se 0.49 ) 2 @NC electrodes delivers a current density of 10 mA cm −2 at a cell voltage of 1.59 V, and it can be powered using the constructed ZABs. These findings contribute to developing low-cost and efficient non-noble metal multifunctional catalysts.

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“…Density functional theory (DFT) calculation showed that Fe doping can cause strain compression by changing the electronic state of Ni 3 S 2 and promoting the OER process. Fe(Se x S 1– x ) 2 composite obtained by S doping into the FeS 2 showed a good catalytic performance for OER . A class of CuS/NiS 2 interfacial nanocrystal (INs) catalysts exhibited atomically coupled nanointerfaces and were rich in vacancy defects .…”

Section: Metal Sulfide Structure Regulationmentioning

confidence: 99%

“…Fe(Se x S 1−x ) 2 composite obtained by S doping into the FeS 2 showed a good catalytic performance for OER. 143 A class of CuS/NiS 2 interfacial nanocrystal (INs) catalysts exhibited atomically coupled nanointerfaces and were rich in vacancy defects. 144 The lattice distortion in CuS/NiS 2 was 14.7%, which was due to the strong Jahn−Teller effect of Cu, as confirmed by the temperature-dependent synchrotron radiation in situ X-ray absorption fine spectra and electron spin resonance spectra.…”

Section: Metal Sulfide Structure Regulationmentioning

confidence: 99%

Recent Progress in Transition-Metal Sulfide Catalyst Regulation for Improved Oxygen Evolution Reaction

Huang

Feng

2022

Energy Fuels

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Electrochemical hydrogen production is considered the most reliable approach to transfer the renewable energies to the chemical energynamely, the hydrogenfor storage, and intensive attention has been directed to the nonprecious catalyst development for water splitting reactions. Among the catalyst candidates, metal sulfides have been extensively explored as an emerging electrocatalyst material for oxygen evolution reaction (OER) in water splitting reaction, because of their abundant active centers, good electrical conductivity, and high intrinsic activity. By optimizing the structure and chemical states, some advanced catalysts have been reported recently, which was instructive and inspiring for novel catalyst development. Herein, the recent advances in electrocatalytic performance and optimization strategies of transition-metal sulfide for OER are reviewed systematically and comprehensively. The fundamental catalytic mechanism and key parameters of OER are first presented and then followed by the physicochemical properties of metal sulfides, which could be helpful in understanding the correlation between the structure and catalytic performance. Importantly, the intrinsic activity of metal sulfides boosted by the general strategies, in terms of the defect/vacancy effect, lattice mismatch, phase engineering, heterostructure, and the doping effect, is mainly discussed in this work. The challenges and opportunities related to the further development of metal sulfide materials with high activity and long-term durability are finally proposed. It can be concluded that these regulatory strategies could largely improve the electrocatalytic performance by increasing the active site exposure and reducing the energy barrier of catalytic reactions. In addition, the problems and future challenges in improving the catalytic performance of metal sulfide materials are presented, which provides beneficial enlightenment and guidance for the development of efficient and low-cost electrocatalysts in the future. Hopefully, this effort would be helpful to the design and preparation of metal sulfides catalyst for OER.

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Engineering unique Fe(SexS1−x)2 nanorod bundles for boosting oxygen evolution reaction

Cited by 33 publications

References 52 publications

FeSe/FeSe₂ Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

FeSe/FeSe₂ Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

Dianion Induced Electron Delocalization of Trifunctional Electrocatalysts for Rechargeable Zn–Air Batteries and Self‐Powered Water Splitting

Recent Progress in Transition-Metal Sulfide Catalyst Regulation for Improved Oxygen Evolution Reaction

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Engineering unique Fe(SexS1−x)2 nanorod bundles for boosting oxygen evolution reaction

Cited by 33 publications

References 52 publications

FeSe/FeSe2 Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

FeSe/FeSe2 Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

Dianion Induced Electron Delocalization of Trifunctional Electrocatalysts for Rechargeable Zn–Air Batteries and Self‐Powered Water Splitting

Recent Progress in Transition-Metal Sulfide Catalyst Regulation for Improved Oxygen Evolution Reaction

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FeSe/FeSe₂ Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction

FeSe/FeSe₂ Heterostructure as a Low‐Cost and High‐Performance Electrocatalyst for Oxygen Evolution Reaction