scholarly journals Synergistic Effect of Molybdenum and Tungsten in Highly Mixed Carbide Nanoparticles as Effective Catalysts in the Hydrogen Evolution Reaction under Alkaline and Acidic Conditions

2020 ◽  
Vol 7 (4) ◽  
pp. 983-988 ◽  
Author(s):  
Qi Fu ◽  
Baoxiang Peng ◽  
Justus Masa ◽  
Yen‐Ting Chen ◽  
Wei Xia ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Acidic Conditions ◽  
And Tungsten

Boosted hydrogen evolution reaction based on synergistic effect of RuO2@MoS2 hybrid electrocatalyst

2021 ◽  
Vol 538 ◽  
pp. 148019
Author(s):  
Zhipeng Liu ◽  
Jianwu Jiang ◽  
Yuhua Liu ◽  
Guoqing Huang ◽  
Shisheng Yuan ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction

Rational design of atomically dispersed nickel active sites in β-Mo2C for the hydrogen evolution reaction at all pH values

2018 ◽  
Vol 54 (71) ◽  
pp. 9901-9904 ◽  
Author(s):  
Ting Ouyang ◽  
An-Na Chen ◽  
Zhen-Zhao He ◽  
Zhao-Qing Liu ◽  
Yexiang Tong
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Properties ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Rational Design ◽  
Efficient Catalyst ◽  
Ph Values ◽  
Ni Species

Atomically dispersed Ni in β-Mo2C (Ni/β-Mo2C) is designed as an efficient catalyst for the HER at all pH values. The remarkable electrochemical properties of Ni/β-Mo2C are mainly attributed to the synergistic effect between atomically dispersed Ni species and β-Mo2C.

Electrochemical formation of PtRu bimetallic nanoparticles for highly efficient and pH-universal hydrogen evolution reaction

2020 ◽  
Vol 8 (4) ◽  
pp. 2090-2098 ◽  
Author(s):  
Lu Li ◽  
Gengwei Zhang ◽  
Bin Wang ◽  
Tao Yang ◽  
Shengchun Yang
Keyword(s):  
Catalytic Activity ◽  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Bimetallic Nanoparticles ◽  
Highly Efficient ◽  
A Performance

The synergistic effect between Pt and Ru in PtRu/CC1500 catalyst results in a promising catalytic activity toward HER, which displays a performance dozens of times higher than that of commercial Pt/C.

Synergistic effect of cobalt boride nanoparticles on MoS2 nanoflowers for a highly efficient hydrogen evolution reaction in alkaline media

Nanoscale ◽  
2020 ◽  
Vol 12 (18) ◽  
pp. 10158-10165 ◽  
Author(s):  
Jie Lao ◽  
Dong Li ◽  
Chunli Jiang ◽  
Chunhua Luo ◽  
Ruijuan Qi ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Highly Efficient ◽  
Cobalt Boride

The CoB@MoS2 hybrid enhanced the HER activity compared to MoS2 in 1.0 M KOH solution (HER overpotential is 146 mV).

scholarly journals How Stable Are 2H-MoS2 Edges Under Hydrogen Evolution Reaction Conditions?

2021 ◽  
Author(s):  
Nawras Abidi ◽  
Audrey Bonduelle-Skrzypczak ◽  
Stephan Steinmann
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Density Functional ◽  
External Source ◽  
Operating Conditions ◽  
Adsorbed Hydrogen ◽  
Functional Theory ◽  
Acidic Conditions

MoS<sub>2</sub>, have emerged as a promising class of electrocatalysts for the production of H<sub>2</sub> via the hydrogen evolution reaction (HER) in acidic conditions.<div>The edges of MoS<sub>2</sub> are known for their HER activity, but their precise atomistic nature and stability under HER conditions is not yet known. In contrast to other typical uses of MoS<sub>2</sub> as a catalyst, under HER there is no external source of sulfur. Therefore, the sulfidation of the edges can only decrease under operating conditions and the thermodynamics of the process are somewhat ill-defined. Our results suggest that the 50%S S-edge may be active for HER via the Volmer-Tafel mechanism and is, despite a high H coverage, stable with respect to H<sub>2</sub>S release. </div><div>At the 50%S Mo-edge, the adsorbed hydrogen opens the way for H<sub>2</sub>S release, leading to the 0%S Mo-edge, which was previously investigated and found to be HER active. HER being a water-based process, we also considered the effect of the presence of H<sub>2</sub>O and the in-situ formation of OH. For the 50%S Mo-edge, H<sub>2</sub>O is only very weakly adsorbed and OH formation is unfavorable. Nevertheless, OH assists the loss of sulfur coverage, leading to OH-based HER active sites. In contrast, OH is strongly adsorbed on the 50%S S-edge. By explicitly considering the electrochemical potential using grand-canonical density functional theory, we unveil that the Volmer-Heyrovsky mechanism on sulfur sites is still accessible in the presence of surface OH at the 50%S S-edge. However, the 50%S S-edge is found to be mildly unstable with respect to H<sub>2</sub>S in the presence of water/OH. Hence, we suggest that the 50%S S-edge evolves over time towards a 0%S S-edge, covered by surface OH that will block permanently the active sites. </div>

CoP and Ni2P implanted in a hollow porous N-doped carbon polyhedron for pH universal hydrogen evolution reaction and alkaline overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (46) ◽  
pp. 23851-23858
Author(s):  
Run Zhang ◽  
Ruolin Zhu ◽  
Ye Li ◽  
Zhi Hui ◽  
Yuyan Song ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Hollow Structure ◽  
Overall Water Splitting ◽  
Electrocatalytic Performance

The formation of a hollow structure and a synergistic effect between CoP and Ni2P can obviously enhance the electrocatalytic performance of CoP/Ni2P@HPNCP.

2D Coordination Polymer-derived CoSe2-NiSe2/CN nanosheets: Dual-phase synergistic effect and ultrathin structure to enhance the hydrogen evolution reaction

2021 ◽  
Author(s):  
Weifeng Jiang ◽  
Jianpeng Sun ◽  
Kebin Lu ◽  
Chuanhai Jiang ◽  
Huakai Xu ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
Cost Effective ◽  
Clean Energy ◽  
Dual Phase ◽  
Effective Synthesis ◽  
Effective Hydrogen

The evolution of cost-effective hydrogen evolution reaction (HER) electrocatalysts is of great significance for the development of clean energy. Exploring effective synthesis strategies to optimize the performance of non-noble metal...

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