In situ electro-oxidation modulation of Ru(OH)x/Ag supported on nickel foam for efficient hydrogen evolution reaction in alkaline media

2019 ◽  
Vol 44 (39) ◽  
pp. 21683-21691 ◽  
Author(s):  
Xin-Yu Zhang ◽  
Bao-Yu Guo ◽  
Feng-Ting Li ◽  
Bin Dong ◽  
Jia-Qi Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Foam ◽  
Alkaline Media ◽  
Electro Oxidation

In situ synthesis of hierarchical MoSe2–CoSe2 nanotubes as an efficient electrocatalyst for the hydrogen evolution reaction in both acidic and alkaline media

2018 ◽  
Vol 6 (17) ◽  
pp. 7842-7850 ◽  
Author(s):  
Xinqiang Wang ◽  
Binjie Zheng ◽  
Bo Yu ◽  
Bo Wang ◽  
Wenqiang Hou ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
In Situ Synthesis ◽  
Alkaline Media ◽  
Acidic And Alkaline Media

Hierarchical MoSe2–CoSe2 nanotubes (MS–CS NTs) are in situ converted from the CoMoO4 nanowires (NWs) via a facile hydrothermal selenization method.

In-situ synthesis of Co-N supported on nickel foam for efficient hydrogen evolution reaction

2019 ◽  
Author(s):  
Xinyu Zhang ◽  
Baoyu Guo ◽  
Bin Dong ◽  
Yongming Chai ◽  
Chenguang Liu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Foam ◽  
In Situ Synthesis

A Mn-doped Ni2P nanosheet array: an efficient and durable hydrogen evolution reaction electrocatalyst in alkaline media

2017 ◽  
Vol 53 (80) ◽  
pp. 11048-11051 ◽  
Author(s):  
Ya Zhang ◽  
Yiwei Liu ◽  
Min Ma ◽  
Xiang Ren ◽  
Zhiang Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Efficiency ◽  
Nickel Foam ◽  
Alkaline Media ◽  
Nanosheet Array ◽  
Mn Doped

A Mn-doped Ni2P nanosheet array on nickel foam (Mn-Ni2P/NF) acts as a high-efficiency and durable electrocatalyst for the hydrogen evolution reaction in 1.0 M KOH, driving 20 mA cm−2 at an overpotential of 103 mV, which is 82 mV less than that for Ni2P/NF.

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.

An in-plane Co9S8@MoS2 heterostructure for the hydrogen evolution reaction in alkaline media

Nanoscale ◽  
2019 ◽  
Vol 11 (44) ◽  
pp. 21479-21486 ◽  
Author(s):  
Lechen Diao ◽  
Biao Zhang ◽  
Qiaozhi Sun ◽  
Ning Wang ◽  
Naiqin Zhao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Three Dimensional ◽  
Alkaline Media ◽  
Hierarchical Pores ◽  
Carbon Network

MoS2/Co9S8 heterostructures were in situ grown on three-dimensional carbon network substrates with interconnected hierarchical pores, exhibit excellent alkaline HER activity.

In situ anchoring of a Co3O4 nanowire on nickel foam: an outstanding bifunctional catalyst for energy-saving simultaneous reactions

2019 ◽  
Vol 21 (24) ◽  
pp. 6699-6706 ◽  
Author(s):  
Zhenqiang Zhou ◽  
Chunlin Chen ◽  
Minrui Gao ◽  
Bowen Xia ◽  
Jian Zhang
Keyword(s):  
Energy Saving ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Foam ◽  
Bifunctional Catalyst

Bifunctional CoNW/NF as an efficient and monolithic electrocatalyst for simultaneous electrooxidation of 5-hydroxymethylfurfural and the hydrogen evolution reaction.

scholarly journals Enhancement of hydrogen evolution reaction kinetics in alkaline media by fast galvanic displacement of nickel with rhodium – from smooth surfaces to electrodeposited nickel foams

2021 ◽  
Author(s):  
Aleksandar Jovanović ◽  
Lazar Bijelić ◽  
Ana Dobrota ◽  
Natalia Skorodumova ◽  
Slavko Mentus ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Foam ◽  
Water Electrolysis ◽  
Alkaline Media ◽  
Nickel Surface ◽  
Hydrogen Binding ◽  
Galvanic Displacement ◽  
Alkaline Water Electrolysis ◽  
Spontaneous Deposition

Energy-efficient hydrogen production is one of the key factors for advancing the hydrogen-based economy. Alkaline water electrolysis is the main route for the production of high-purity hydrogen, but further improvements of hydrogen evolution reaction (HER) catalysts are still needed. Industrial alkaline electrolysis relies on Ni-based catalysts, and here we describe a drastic improvement of HER activity of Ni in alkaline media using several model catalysts for HER obtained upon nickel surface modification in aqueous solution of rhodium salts, when a spontaneous deposition of rhodium takes place based on the chemical displacement reaction 3Ni + 2Rh3+ = 3Ni2+ + 2Rh. In the case of smooth Ni-poly electrodes, HER activity surpasses the activity of Pt-poly already after 30 s of exchange with Rh. SEM analysis showed that Rh is uniformly distributed, while surface roughness changes within 10%, agreeing with electrochemical measurements. Furthermore, XPS analysis has shown effective incorporation of Rh in the surface, while DFT calculations suggest that hydrogen binding is significantly weakened on the Rh-modified Ni surfaces. Such tuning of the hydrogen binding energy is seen as the main factor governing HER activity improvements. The same galvanic displacement protocols were employed for nickel foam electrodes and electrodeposited Ni on Ti mesh. In both cases, somewhat longer Rh exchange times are needed to obtain superior activities than for the smooth Ni surface, but up to 10 min. HER overpotential corresponding to −10 mA cm−2 for nickel foam and electrodeposited Ni electrodes, after modification with Rh, amounted to only −0.07 and −0.09 V, respectively. Thus, it is suggested that a fast spontaneous displacement of Ni with Rh could effectively boost HER in alkaline media with minor cost penalties compared to energy saving in the electrolysis process.

In-situ growth of carbon nanotubes on Ni/NiO nanofibers as efficient hydrogen evolution reaction catalysts in alkaline media

2019 ◽  
Vol 491 ◽  
pp. 294-300 ◽  
Author(s):  
Lijun Yang ◽  
Xiaochong Zhao ◽  
Ruizhu Yang ◽  
Pengxiang Zhao ◽  
Yintao Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
In Situ Growth
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