An Interfacial Electron Transfer on Tetrahedral NiS 2 /NiSe 2 Heterocages with Dual‐Phase Synergy for Efficiently Triggering the Oxygen Evolution Reaction

Small ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 1905083 ◽  
Author(s):  
Yang Yang ◽  
Yikun Kang ◽  
Huihui Zhao ◽  
Xiaoping Dai ◽  
Meilin Cui ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Dual Phase ◽  
Interfacial Electron Transfer

Interfacial electron transfer of heterostructured MIL-88A/Ni(OH)2 enhances the oxygen evolution reaction in alkaline solutions

2020 ◽  
Vol 8 (6) ◽  
pp. 3311-3321 ◽  
Author(s):  
Zhengxin Qian ◽  
Keke Wang ◽  
Kexin Shi ◽  
Zhaoqin Fu ◽  
Zequn Mai ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Alkaline Solutions ◽  
Interfacial Electron Transfer ◽  
Interfacial Charge Transfer ◽  
Interfacial Charge

A facile strategy is developed to create a MIL-88A/Ni(OH)2 heterostructure, where the interfacial charge transfer significantly boosted the OER performance.

Revealing Effect of Interfacial Electron Transfer in Heterostructured Co9S8@NiFe LDH for Enhanced Electrocatalytic Oxygen Evolution

2021 ◽  
Author(s):  
Xueting Feng ◽  
Qingze Jiao ◽  
Zheng Dai ◽  
Yanliu Dang ◽  
Steven L Suib ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Interfacial Electron Transfer ◽  
Double Hydroxide

Heterointerface engineering is a desirable way to rationally design efficient and low-cost electrocatalysts for the oxygen evolution reaction (OER). Herein, the urchin-like Co9S8@NiFe layered double hydroxide (Co9S8@NiFe LDH) heterostructured hollow...

The electron-transfer intermediates of the oxygen evolution reaction (OER) as polarons by in situ spectroscopy

2021 ◽  
Author(s):  
Hanna Lyle ◽  
Suryansh Singh ◽  
Michael Paolino ◽  
Ilya Vinogradov ◽  
Tanja Cuk
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Catalytic Reactions ◽  
In Situ Spectroscopy ◽  
Chemical Bonds

The conversion of diffusive forms of energy (electrical and light) into short, compact chemical bonds by catalytic reactions regularly involves moving a carrier from an environment that favors delocalization to one that favors localization.

Increased activity in the oxygen evolution reaction by Fe4+-induced hole states in perovskite La1−xSrxFeO3

2020 ◽  
Vol 8 (8) ◽  
pp. 4407-4415 ◽  
Author(s):  
Zechao Shen ◽  
Yongbin Zhuang ◽  
Weiwei Li ◽  
Xiaochun Huang ◽  
Freddy E. Oropeza ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Energy Barrier ◽  
Hole State ◽  
Reaction Intermediates ◽  
Increased Activity

Hole for faster OER: The hole state induced by Fe4+ promotes the OER process. It reduces the energy barrier for electron transfer at the interface and facilitates a faster electron transfer from reaction intermediates to the catalyst.

scholarly journals Spin-Polarized Oxygen Evolution Reaction Under Magnetic Field

2021 ◽  
Author(s):  
Xiao Ren ◽  
Tianze Wu ◽  
Yuanmiao Sun ◽  
Yan Li ◽  
Guoyu Xian ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Transfer ◽  
Triplet State ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Spin Exchange ◽  
Momentum Conservation ◽  
Exclusion Principle ◽  
Fast Kinetics ◽  
Spin Polarized

<p><a></a><a>The oxygen evolution reaction (OER) is the bottleneck that limits the energy efficiency of water-splitting. The process involves four electrons’ transfer and the generation of triplet state O<sub>2</sub> from singlet state species (OH<sup>- </sup>or H<sub>2</sub>O). Recently, explicit spin selection was described as a possible way to promote OER in alkaline conditions, but the specific spin-polarized kinetics remains unclear. </a><a></a><a>Here, we report that </a><a>by using ferromagnetic ordered catalysts as the spin polarizer for spin selection under </a><a></a><a>a constant magnetic field</a>, <a>the OER can be enhanced.</a> However, it does not applicable to non-ferromagnetic catalysts. We found that the spin <a>polarization occurs at the first electron transfer step in OER</a>, where <a></a><a>coherent spin exchange happens </a>between the <a></a><a>ferromagnetic</a> catalyst and the adsorbed oxygen species <a>with fast kinetics</a>, under the principle of spin angular momentum conservation. In the next three electron transfer steps, as the adsorbed O species adopt fixed spin direction, the OER electrons need to follow the Hund rule and Pauling exclusion principle, thus to carry out spin polarization spontaneously and finally lead to the generation of triplet state O<sub>2</sub>. Here, we showcase spin-polarized kinetics of oxygen evolution reaction, which gives references in the understanding and design of spin-dependent catalysts.</p>

Nickel nitride–black phosphorus heterostructure nanosheets for boosting the electrocatalytic activity towards the oxygen evolution reaction

2019 ◽  
Vol 7 (38) ◽  
pp. 22063-22069 ◽  
Author(s):  
Tong Wu ◽  
Shaoning Zhang ◽  
Kejun Bu ◽  
Wei Zhao ◽  
Qingyuan Bi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Transfer Rate ◽  
Active Sites ◽  
Hydroxyl Groups ◽  
High Electron ◽  
Electron Transfer Rate ◽  
Alkaline Fuel Cells ◽  
Nickel Nitride

The extraordinary oxygen evolution reaction (OER) in alkaline fuel cells and water-splitting systems demands a high electron transfer rate and catalysts with numerous active sites and massive hydroxyl groups.

scholarly journals Spin-polarized oxygen evolution reaction under magnetic field

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiao Ren ◽  
Tianze Wu ◽  
Yuanmiao Sun ◽  
Yan Li ◽  
Guoyu Xian ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Transfer ◽  
Triplet State ◽  
Oxygen Evolution ◽  
Spin Polarization ◽  
Oxygen Evolution Reaction ◽  
Spin Exchange ◽  
Exclusion Principle ◽  
Fast Kinetics ◽  
Spin Polarized

AbstractThe oxygen evolution reaction (OER) is the bottleneck that limits the energy efficiency of water-splitting. The process involves four electrons’ transfer and the generation of triplet state O2 from singlet state species (OH- or H2O). Recently, explicit spin selection was described as a possible way to promote OER in alkaline conditions, but the specific spin-polarized kinetics remains unclear. Here, we report that by using ferromagnetic ordered catalysts as the spin polarizer for spin selection under a constant magnetic field, the OER can be enhanced. However, it does not applicable to non-ferromagnetic catalysts. We found that the spin polarization occurs at the first electron transfer step in OER, where coherent spin exchange happens between the ferromagnetic catalyst and the adsorbed oxygen species with fast kinetics, under the principle of spin angular momentum conservation. In the next three electron transfer steps, as the adsorbed O species adopt fixed spin direction, the OER electrons need to follow the Hund rule and Pauling exclusion principle, thus to carry out spin polarization spontaneously and finally lead to the generation of triplet state O2. Here, we showcase spin-polarized kinetics of oxygen evolution reaction, which gives references in the understanding and design of spin-dependent catalysts.

Fine regulation of electron transfer in Ag@Co3O4 nanoparticles for boosting oxygen evolution reaction

2021 ◽  
Author(s):  
Xiwen Du ◽  
Zhe Li ◽  
Yi Feng ◽  
Xiuyao Lang ◽  
Wenjing Kang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Shell Structure ◽  
Shell Thickness ◽  
Core Shell ◽  
Co3o4 Nanoparticles ◽  
Fine Regulation ◽  
Core Shell Structure

In this study, a core-shell structure (Ag@Co3O4) was constructed to modify valance state of cobalt cations precisely by continuously adjusting the shell thickness. There exists a volcano relationship between valence...

Tailoring electron transfer with Ce integration in ultrathin Co(OH)2 nanosheets by fast microwave for oxygen evolution reaction

2021 ◽  
Vol 59 ◽  
pp. 299-305
Author(s):  
Ya-Nan Zhou ◽  
Ruo-Yao Fan ◽  
Shu-Yue Dou ◽  
Bin Dong ◽  
Yu Ma ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction

An Fe stabilized metallic phase of NiS2 for the highly efficient oxygen evolution reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (48) ◽  
pp. 23217-23225 ◽  
Author(s):  
Xingyu Ding ◽  
Weiwei Li ◽  
Haipeng Kuang ◽  
Mei Qu ◽  
Meiyan Cui ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Thin Layer ◽  
Oxygen Evolution ◽  
Fast Electron ◽  
Oxygen Evolution Reaction ◽  
Metallic Phase ◽  
Highly Efficient ◽  
Conductive Channel

The Fe0.1Ni0.9S2 catalyst can maintain its own metallic phase as a conductive channel for fast electron transfer and a thin layer of Fe0.1Ni0.9OOH serves as an active catalytic phase for the OER.

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