scholarly journals Electronic structure modulation of MoS2 by substitutional Se incorporation and interfacial MoO3 hybridization: Implications of Fermi engineering for electrocatalytic hydrogen evolution and oxygen evolution

2021 ◽  
Vol 2 (1) ◽  
pp. 011401
Author(s):  
Abhishek Parija ◽  
Wasif Zaheer ◽  
Junsang Cho ◽  
Theodore E. G. Alivio ◽  
Sirine C. Fakra ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Structure Modulation

Interfacial Electronic Structure Modulation of NiTe Nanoarrays with NiS Nanodots Facilitates Electrocatalytic Oxygen Evolution

2019 ◽  
Vol 31 (21) ◽  
pp. 1900430 ◽  
Author(s):  
Ziqian Xue ◽  
Xia Li ◽  
Qinglin Liu ◽  
Mengke Cai ◽  
Kang Liu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Interfacial Electronic Structure ◽  
Structure Modulation

Enhancing hydrogen evolution reaction through modulating electronic structure of self-supported NiFe LDH

2020 ◽  
Vol 10 (13) ◽  
pp. 4184-4190 ◽  
Author(s):  
Xiao-Peng Li ◽  
Wen-Kai Han ◽  
Kang Xiao ◽  
Ting Ouyang ◽  
Nan Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Alkaline Electrolyte ◽  
Overall Water Splitting ◽  
Double Hydroxide

NiFe-layered double hydroxide (NiFe LDH), as an efficient oxygen evolution reaction (OER) electrocatalyst, has emerged as a promising electrocatalyst for catalyzing overall water splitting in alkaline electrolyte.

Electronic structure modulation of CoSe2 nanowire arrays by tin doping toward efficient hydrogen evolution

2021 ◽  
Vol 46 (33) ◽  
pp. 17133-17142
Author(s):  
Caichi Liu ◽  
Yongchuan Hu ◽  
Fang Liu ◽  
Hui Liu ◽  
Xuewen Xu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Nanowire Arrays ◽  
Structure Modulation

Electronic structure modulation of metal-free graphdiyne for acidic oxygen evolution reaction

2D Materials ◽  
2021 ◽  
Author(s):  
Zhiqiang Zheng ◽  
Yurui Xue ◽  
Yaqi Gao ◽  
Zhongqiang Wang ◽  
Shuya Zhao ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Carbon Materials ◽  
Metal Free ◽  
Catalytic Activities ◽  
Structure Modulation ◽  
Flexible Metal ◽  
Kinetics Of

Abstract Developing high-performance metal-free electrocatalysts for acidic oxygen evolution reaction (AOER) is highly desirable but remains great challenge. Here we report a rationally substituting sp-C strategy for the synthesis of methyl- and hydrogen-substituted graphdiyne (MGDY, HGDY) nanowires arrays as 3D porous flexible metal-free electrodes for AOER. Methyl group in MGDY with stronger electron-pushing effect makes electrons around the acetylenic carbon atoms more delocalized, resulting in more uneven distributed surface charge, and higher intrinsic catalytic activities for AOER than HGDY, with the smaller overpotential of 406 mV at 10 mA cm−2 than HGDY and previously reported metal-free electrocatalysts. Our results reveal that the modulation of the electronic structure of GDY by selectively substituting sp-C allows for facilitating charge transfer kinetics, improving adsorption of reaction intermediate, and thereby accelerating the sluggish kinetics of AOER. This work provides us an ideal opportunity for studying the exact HER/OER mechanisms of metal-free carbon materials.

Improving the oxygen evolution reaction using electronic structure modulation of sulfur-retaining nickel-based electrocatalysts

2021 ◽  
Author(s):  
Man Ho Han ◽  
Min-wook Pin ◽  
Jai Hyun Koh ◽  
Jong Hyeok Park ◽  
Jihyun Kim ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Transition Metals ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Experimental Studies ◽  
Promising Method ◽  
Catalytic Activities ◽  
Structure Modulation

The sulfurization of transition metals is a promising method for improving their catalytic activities in the oxygen evolution reaction (OER). However, experimental studies regarding the effects of undissolved, remaining S...

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