Synthesis and performance optimization of ultrathin two-dimensional CoFePt alloy materials via in situ topotactic conversion for the hydrogen evolution reaction

2019 ◽  
Vol 7 (16) ◽  
pp. 9517-9522 ◽  
Author(s):  
Qian Zhang ◽  
Yun Kuang ◽  
Yaping Li ◽  
Ming Jiang ◽  
Zhao Cai ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Performance Optimization ◽  
Alkaline Solutions ◽  
Two Dimensional ◽  
Nanosheet Arrays ◽  
And Performance

Two-dimensional CoFe–Pt1% nanosheet arrays fabricated via topotactic conversion for the hydrogen evolution reaction in alkaline solutions.

Mn doped CoP nanoparticle clusters: an efficient electrocatalyst for hydrogen evolution reaction

2018 ◽  
Vol 8 (17) ◽  
pp. 4407-4412 ◽  
Author(s):  
Xiumin Li ◽  
Shasha Li ◽  
Akihiro Yoshida ◽  
Suchada Sirisomboonchai ◽  
Keyong Tang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Solutions ◽  
Nanoparticle Clusters ◽  
Mn Doped

Electrodeposited CoMn LDH was in situ converted to Mn-CoP electro-catalysts which show excellent HER activity in both acidic and alkaline solutions.

scholarly journals In Situ Wet Etching of MoS2@dWO3 Heterostructure as Ultra-Stable Highly Active Electrocatalyst for Hydrogen Evolution Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 977
Author(s):  
Xintian Liu ◽  
Congwei Wang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Vacancies ◽  
Rapid Development ◽  
Strong Stability ◽  
Wet Etching ◽  
Two Dimensional ◽  
Highly Active ◽  
Anisotropic Substrate

Electrocatalysts featuring robust structure, excellent catalytic activity and strong stability are highly desirable, but challenging. The rapid development of two-dimensional transition metal chalcogenide (such as WO3, MoS2 and WS2) nanostructures offers a hopeful strategy to increase the active edge sites and expedite the efficiency of electronic transport for hydrogen evolution reaction. Herein, we report a distinctive strategy to construct two-dimensional MoS2@dWO3 heterostructure nanosheets by in situ wet etching. Synthesized oxygen-incorporated MoS2-was loaded on the surface of defective WO3 square nanoframes with abundant oxygen vacancies. The resulting nanocomposite exhibits a low overpotential of 191 mV at 10 mA cm−2 and a very low Tafel slope of 42 mV dec−1 toward hydrogen evolution reaction. The long-term cyclic voltammetry cycling of 5000 cycles and more than 80,000 s chronoamperometry tests promises its outstanding stability. The intimate and large interfacial contact between MoS2 and WO3, favoring the charge transfer and electron–hole separation by the synergy of defective WO3 and oxygen-incorporated MoS2, is believed the decisive factor for improving the electrocatalytic efficiency of the nanocomposite. Moreover, the defective WO3 nanoframes with plentiful oxygen vacancies could serve as an anisotropic substrate to promote charge transport and oxygen incorporation into the interface of MoS2. This work provides a unique methodology for designing and constructing excellently heterostructure electrocatalysts for hydrogen evolution reaction.

Formation of porous NiCoV-LTH nanosheet arrays by in situ etching of nickel foam for the hydrogen evolution reaction at large current density

2021 ◽  
Vol 50 (1) ◽  
pp. 72-75
Author(s):  
Qianqian Liu ◽  
Jianfeng Huang ◽  
Dan Yang ◽  
Yongqiang Feng ◽  
Guodong Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Nickel Foam ◽  
Large Current ◽  
Nanosheet Arrays ◽  
Large Current Density

The in-situ growth of NiCoV–LTH on nickel foam was reported for electrocatalytic hydrogen evolution reaction at large current density.

scholarly journals Mechanisms of Hydrogen Evolution Reaction in Two-Dimensional Nitride MXenes Using In Situ X-Ray Absorption Spectroelectrochemistry

ACS Catalysis ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 3128-3136
Author(s):  
Abdoulaye Djire ◽  
Hanyu Zhang ◽  
Benjamin J. Reinhart ◽  
O. Charles Nwamba ◽  
Nathan R. Neale
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
X Ray ◽  
X Ray Absorption

In situ formed VOOH nanosheet arrays anchored on a Ti3C2Tx MXene as a highly efficient and robust synergistic electrocatalyst for boosting water oxidation and reduction

2020 ◽  
Vol 8 (44) ◽  
pp. 23637-23644
Author(s):  
Liang Yan ◽  
Xuanwei Chen ◽  
Xiaojun Liu ◽  
Liping Chen ◽  
Bing Zhang
Keyword(s):  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Highly Efficient ◽  
Electrocatalytic Performance ◽  
Nanosheet Arrays

A novel VOOH/Ti3C2Tx MXene heterostructure was synthesized; it delivered enhanced electrocatalytic performance for the hydrogen evolution reaction and the oxygen evolution reaction.

In-situ optimizing the valence configuration of vanadium sites in NiV-LDH nanosheet arrays for enhanced hydrogen evolution reaction

2020 ◽  
Vol 47 ◽  
pp. 263-271 ◽  
Author(s):  
Danyang He ◽  
Liyun Cao ◽  
Jianfeng Huang ◽  
Koji Kajiyoshi ◽  
Jianpeng Wu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanosheet Arrays ◽  
Valence Configuration

scholarly journals A flower-like CoS2/MoS2 heteronanosheet array as an active and stable electrocatalyst toward the hydrogen evolution reaction in alkaline media

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8973-8981 ◽  
Author(s):  
Mengtong Shi ◽  
Yang Zhang ◽  
Yaxing Zhu ◽  
Wei Wang ◽  
Changzheng Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Nanosheet Arrays ◽  
Vertically Aligned

CoS2/MoS2 heteronanosheet arrays with vertically aligned flower-like architecture are fabricated through in situ topotactic sulfurization of CoMoO4 nanosheet arrays.

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