scholarly journals Electronic Structure Regulation on the Ultra-thin MOF-derived NiSe2/NiS2@NC Heterojunction for Promoting the Hydrogen Evolution Reaction

2022 ◽  
Author(s):  
Kebin Lu ◽  
Jianpeng Sun ◽  
Chuanhai Jiang ◽  
Huakai Xu ◽  
Fangna Dai ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Narrow Bandgap ◽  
Structure Regulation ◽  
Metal Selenides

Transition metal selenides (TMSes) is considered a promising electrocatalyst for hydrogen evolution reaction (HER) due to narrow bandgap, unique morphology and low cost. Herein, using Ni-MOF as precursor, NiSe2/NiS2@NC electrocatalyst...

Ultra-efficient, low-cost and carbon-supported transition metal sulphide as a platinum free electrocatalyst towards hydrogen evolution reaction at alkaline medium

2021 ◽  
Author(s):  
Kumar Premnath ◽  
Jagannathan Madhavan ◽  
Saradh Prasad ◽  
Mamduh J. Aljaafreh ◽  
Mohamad S. AlSalhi ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Alkaline Medium ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Metal Sulphide

Transition Metal Selenides for Electrocatalytic Hydrogen Evolution Reaction

2019 ◽  
Vol 7 (1) ◽  
pp. 31-54 ◽  
Author(s):  
Wenshuai Feng ◽  
Wenbin Pang ◽  
Yan Xu ◽  
Aimin Guo ◽  
Xiaohui Gao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Metal Selenides

scholarly journals Influence of Transition Metal on the Hydrogen Evolution Reaction over Nano-Molybdenum-Carbide Catalyst

Catalysts ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 294 ◽  
Author(s):  
Meng Chen ◽  
Yufei Ma ◽  
Yanqiang Zhou ◽  
Changqing Liu ◽  
Yanlin Qin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photoelectron Spectroscopy ◽  
Molybdenum Carbide ◽  
Low Cost ◽  
X Ray ◽  
Energy And Environment ◽  
Molybdenum Carbides ◽  
Metal Doped

The highly efficient electrochemical hydrogen evolution reaction (HER) provides a promising way to solve energy and environment problems. In this work, various transition metals (Fe, Co, Ni, Cu, Ag, and Pt) were selected to support on molybdenum carbides by a simple organic-inorganic precursor carburization process. X-ray diffraction (XRD) analysis results indicated that the β-Mo2C phase was formed in all metal-doped samples. X-ray photoelectron spectroscopy analysis indicated that the binding energy of Mo2+ species (Mo2C) shifted to a lower value after metal was doped on the molybdenum carbide surface. Comparing with pure β-Mo2C, the electrocatalytic activity for HER was improved by transition metal doping on the surface. Remarkably, the catalytic activity improvement was more obvious when Pt was doped on molybdenum carbide (2% Pt-Mo2C). The 2% Pt-Mo2C required a η10 of 79 mV, and outperformed that of pure β-Mo2C (η10 = 410 mV) and other transition metal doped molybdenum carbides, with a small Tafel slope (55 mV/dec) and a low onset overpotential (32 mV) in 0.5 M H2SO4. Also, the 2% Pt-Mo2C catalyst demonstrated a high stability for the HER in 0.5 M H2SO4. This work highlights a feasible strategy to explore efficient electrocatalysts with low cost via engineering on the composition and nanostructure.

Rational Design of Ni3S2 Nanosheets-Ag Nanorods on Ni Foam with Improved Hydrogen Adsorption Sites for Hydrogen Evolution Reaction

2021 ◽  
Author(s):  
Haijun Liu ◽  
Wen-Li Yu ◽  
Meng-Xuan Li ◽  
Shu-Yue Dou ◽  
Fu-Li Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Bonds ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Hydrogen Adsorption ◽  
Low Cost ◽  
Metal Sulfides ◽  
Ni Foam ◽  
Adsorption Sites

Transition-metal sulfides (MxSy) have attracted keen interest as promising catalysts for hydrogen evolution reaction (HER) due to their low cost. However, the formation of sulfur-hydrogen bonds on MxSy (S-Hads) will...

The mechanism of hydrogen adsorption on transition metal dichalcogenides as hydrogen evolution reaction catalyst

2017 ◽  
Vol 19 (15) ◽  
pp. 10125-10132 ◽  
Author(s):  
Jinsong Wang ◽  
Jia Liu ◽  
Bao Zhang ◽  
Xiao Ji ◽  
Kui Xu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrogen Adsorption ◽  
Low Cost ◽  
Transition Metal Dichalcogenides ◽  
Electrochemical Stability ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Two-dimensional transition metal dichalcogenides (TMDs) have been widely considered as potential hydrogen evolution reaction (HER) catalysts because of their low cost and good electrochemical stability in acid conditions.

scholarly journals WS2–WC–WO3 nano-hollow spheres as an efficient and durable catalyst for hydrogen evolution reaction

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Tuan Van Nguyen ◽  
Ha Huu Do ◽  
Mahider Tekalgne ◽  
Quyet Van Le ◽  
Thang Phan Nguyen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Transition Metal Oxides ◽  
Photoelectron Spectroscopy ◽  
Active Sites ◽  
Low Cost ◽  
Hollow Spheres ◽  
Efficient Catalyst ◽  
X Ray

AbstractTransition metal dichalcogenides (TMDs), transition metal carbides (TMCs), and transition metal oxides (TMOs) have been widely investigated for electrocatalytic applications owing to their abundant active sites, high stability, good conductivity, and various other fascinating properties. Therefore, the synthesis of composites of TMDs, TMCs, and TMOs is a new avenue for the preparation of efficient electrocatalysts. Herein, we propose a novel low-cost and facile method to prepare TMD–TMC–TMO nano-hollow spheres (WS2–WC–WO3 NH) as an efficient catalyst for the hydrogen evolution reaction (HER). The crystallinity, morphology, chemical bonding, and composition of the composite material were comprehensively investigated using X-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy, and X-ray photoelectron spectroscopy. The results confirmed the successful synthesis of the WS2–WC–WO3 NH spheres. Interestingly, the presence of nitrogen significantly enhanced the electrical conductivity of the hybrid material, facilitating electron transfer during the catalytic process. As a result, the WS2–WC–WO3 NH hybrid exhibited better HER performance than the pure WS2 nanoflowers, which can be attributed to the synergistic effect of the W–S, W–C, and W–O bonding in the composite. Remarkably, the Tafel slope of the WS2–WC–WO3 NH spheres was 59 mV dec−1, which is significantly lower than that of the pure WS2 NFs (82 mV dec−1). The results also confirmed the unprecedented stability and superior electrocatalytic performance of the WS2–WC–WO3 NH spheres toward the HER, which opens new avenues for the preparation of low-cost and highly effective materials for energy conversion and storage applications.

scholarly journals Well‐Dispersed Nickel‐ and Zinc‐Tailored Electronic Structure of a Transition Metal Oxide for Highly Active Alkaline Hydrogen Evolution Reaction

2019 ◽  
Vol 31 (16) ◽  
pp. 1807771 ◽  
Author(s):  
Tao Ling ◽  
Tong Zhang ◽  
Binghui Ge ◽  
Lili Han ◽  
Lirong Zheng ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
Metal Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Transition Metal Oxide ◽  
Highly Active

The effect of carbon quantum dots on the electrocatalytic hydrogen evolution reaction of manganese–nickel phosphide nanosheets

2019 ◽  
Vol 7 (37) ◽  
pp. 21488-21495 ◽  
Author(s):  
Weiwu Chen ◽  
Zhaojun Qin ◽  
Brian McElhenny ◽  
Fanghao Zhang ◽  
Shuo Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Catalytic Efficiency ◽  
Carbon Quantum Dots ◽  
Nickel Phosphide ◽  
Metal Phosphides ◽  
Transition Metal Phosphides

Transition-metal phosphides (TMPs) are good electrocatalysts for the hydrogen evolution reaction (HER) due to their high catalytic efficiency and low cost.

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