Single-atom Fe Embedded CO3S4 for Efficient Electrocatalytic Oxygen Evolution Reaction

Qi, Yuxue; Li, Tingting; Hu, Yuanman; Xiang, Jiahong; Shao, Wenqian; Chen, Wenhua; Mu, Xueqin; Liu, Suli; Chen, Changyun; Yu, Min; Mu, Shichun

doi:10.1007/s40242-022-2248-x

Cited by 15 publications

(8 citation statements)

References 35 publications

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“…The activity and selectivity of the electrocatalytic reaction are essentially determined by the binding energy of the intermediate in multiple reaction steps. [126][127][128] The binding energies of different intermediates are proportional to each other through thermodynamic scaling. 129 For pure singlecenter catalysts, the chemical structure of the catalytic center is relatively simple, and it is difficult to optimize the binding energy of an intermediate without affecting other intermediates.…”

Section: Synergistic Mechanism Of Sa/pcsmentioning

confidence: 99%

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

Cao

Luo

et al. 2023

Mater. Chem. Front.

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Section: Synergistic Mechanism Of Sa/pcsmentioning

confidence: 99%

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

Cao

Luo

et al. 2023

Mater. Chem. Front.

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“…Peak near 658 cm À1 (Peak 3) can be attributed to the vibration mode of the Co-S bond in Co 3 S 4 . [46,47] In the process of charging, the intensities of three peaks gradually increase with the potential from 0 to 0.5 V. Discharging to 0 V, the intensities of three peaks weakened, revealing that the electrochemical reaction is reversible. Especially, when the Co 3 S 4 @NiCo-LDH/NF electrode was charged, the intensity of the peak around 465 cm À1 became stronger, indicating that the layered α-Ni(OH) 2 transformed into the γ-NiOOH crystal structure because of cation insertion.…”

Section: Electrochemical Capabilities Of Samplesmentioning

confidence: 99%

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Liang

Gao

et al. 2023

Energy Tech

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Cobalt‐based sulfide is an excellent electrode material applied to supercapacitors (SCs) because of its good reversibility and abundant nanoforms. However, the feasibility of its practical application is reduced due to lack of stability and some difference with theoretical capacity. Herein, the hierarchical structures of Co3S4 hollow nanotube arrays wrapped with NiCo‐layered double hydroxide nanosheets (Co3S4@NiCo‐LDHs) are successfully fabricated on the nickel foam (NF) as the nonbinder electrode of SCs. Profiting from the synthetic effect of Co3S4 hollow nanotube arrays with effective diffusion channels, and NiCo‐LDH nanosheets with a stable interconnected network, the prepared Co3S4@NiCo‐LDH/NF composite electrode with a unique hierarchical structure attains an amazing areal capacity (7.45 C cm−2 at 2 mA cm−2) and impressive cycle stability (87.7% through 5000 charge and discharge cycles). In addition, the assembled asymmetric supercapacitor (Co3S4@NiCo‐LDH/NF//AC) shows pleasant energy density (0.661 mWh cm−2 under 1.359 mW cm−2). The capacity of the assembled device can still be retained at 92% after 5000 cycles, which verifies the feasibility of the device in practical application.

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“…Transition-metal sulfides (TMSs) catalysts, especially Co, Fe, and Ni-based sulfides, − born with a cost-effective perspective and modified potential possibility, have been extensively studied to meet the requirements of high-efficiency electrocatalysts. Among them, Co-based sulfides, such as CoS, , Co 3 S 4 , − CoS 2 , , and Co 9 S 8 , , have been employed as active and low-cost ORR/OER electrocatalysts for energy applications. For example, CoS was reported as an efficient and stable electrocatalytic active center based on carbon support, Nevertheless, the single catalytic activity, limited active site, and poor conductivity restrict CoS from being used as a bifunctional electrocatalyst in flexible ZABs. , To maximize the catalytic efficiency of TMS-based electrode materials, chemical composition tuning and nanostructure modification are common strategies .…”

Section: Introductionmentioning

confidence: 99%

Coupling MnS and CoS Nanocrystals on Self-Supported Porous N-doped Carbon Nanofibers to Enhance Oxygen Electrocatalytic Performance for Flexible Zn-Air Batteries

Shi

Jia

et al. 2023

ACS Appl. Mater. Interfaces

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Seeking highly efficient, stable, and cost-effective bifunctional electrocatalysts of rechargeable Zn–air batteries (ZABs) is the top-priority for developing new generation portable electronic devices. For this, the rational and effective structural design, interface engineering, and electron recombination on electrocatalysts should be taken into account to reduce the reaction overpotential and expedite the kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Herein, we construct a MnCo-based metal organic framework-derived heterogeneous MnS–CoS nanocrystals, which are anchored on free-standing porous N-doped carbon fibers (PNCFs) by the in situ growth method and vulcanization process. Benefiting from the abundant vacancies and active sites, strong interfacial coupling as well as favorable conductivity, the MnS–CoS/PNCFs composite electrode delivers a mentionable oxygen electrocatalytic activity and stability with a half-wave potential of 0.81 V for ORR and an overpotential of 350 mV for OER in the alkaline medium. Of note, the flexible rechargeable ZAB using MnS–CoS/PNCFs as binder-free air cathode offers high power density of 86.7 mW cm–2, large specific capacity of 563 mA h g–1, and adapts to different bending degree of operation. In addition, the density functional theory calculation clarifies that the heterogeneous MnS–CoS nanocrystals reduces the reaction barrier and enhances the conductivity of the catalyst and the adsorption capacity of the intermediates during the ORR and OER process. This study opens up a new insight to the design of the self-supported air cathode for flexible electronic devices.

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Single-atom Fe Embedded CO3S4 for Efficient Electrocatalytic Oxygen Evolution Reaction

Cited by 15 publications

References 35 publications

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Coupling MnS and CoS Nanocrystals on Self-Supported Porous N-doped Carbon Nanofibers to Enhance Oxygen Electrocatalytic Performance for Flexible Zn-Air Batteries

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Single-atom Fe Embedded CO3S4 for Efficient Electrocatalytic Oxygen Evolution Reaction

Cited by 15 publications

References 35 publications

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

The Hierarchical Structures of Co3S4 Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Coupling MnS and CoS Nanocrystals on Self-Supported Porous N-doped Carbon Nanofibers to Enhance Oxygen Electrocatalytic Performance for Flexible Zn-Air Batteries

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The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors