Morphologically controlled rapid fabrication of rhodium sulfide (Rh2S3) thin films for superior and robust hydrogen evolution reaction

2021 ◽  
Author(s):  
Muhammad Ali Ehsan ◽  
Alaaldin Adam ◽  
Abdul Rehman ◽  
Abbas Saeed Hakeem ◽  
Anvarhusein A. Isab ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Acidic Media ◽  
Rapid Fabrication ◽  
Thin Film Electrodes

Rh2S3 thin film electrodes prepared by a facile and rapid fabrication route exhibit superior HER catalysis performance in acidic media.

scholarly journals Electrodeposition of Iridium-Nickel Thin Films on Copper Foam: Effects of Loading and Solution Temperature on HER Performance of Electrocatalyst in Alkaline Water

2020 ◽  
Author(s):  
Jianwen Liu ◽  
Wangping Wu ◽  
Xiang Wang
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Hydrogen Evolution ◽  
Electrocatalytic Activity ◽  
Electrochemical Impedance ◽  
Low Cost ◽  
Solution Temperature ◽  
High Deposition Rate ◽  
Hydrogen Energy ◽  
Copper Foam

Developing novel hydrogen evolution reaction (HER) catalysts with high activity, high stability and low cost is of great importance for the applications of hydrogen energy. In this work, iridium-nickel (Ir-Ni) thin films were electrodeposited on a copper foam as electrocatalyst for HER, and electrodeposition mechanism of Ir-Ni film was studied. The morphology and chemical composition of thin films were determined by scanning electron microscopy and energy-dispersive spectroscopy, respectively. The electrocatalytic performances of the films were estimated by linear sweep voltammograms, electrochemical impedance spectroscopy and cyclic voltammetry. The results show that Ir-Ni thin films were attached to the substrate of porous structure and hollow topography. The deposition of Ni was preferable in the electrolyte without the addition of additives, and Ir-Ni thin film was alloyed, resulting in high deposition rate for Ir42Ni58 thin film, and subsequently an increase of Ir content in the thin films of Ir80Ni20 and Ir88Ni12. Ir-Ni thin films with Tafel slopes of 40-49 mV·dec-1 exhibited highly efficient electrocatalytic activity for HER. The electrocatalytic activity of Ir-Ni thin films showed a loading dependence. As the solution temperature raised from 20 oC to 60 oC, the hydrogen evolution performance of Ir-Ni thin films improved. The apparent activation energy value of Ir88Ni12 film was 7.1 kJ·mol-1. Long-term hydrogen evolution tests exhibited excellent electrocatalystic stability in alkaline solution.

Aged Co-Mo alloy thin film catalyst for hydrogen evolution reaction in acidic solution

2021 ◽  
pp. 2151018
Author(s):  
Cihan Kuru
Keyword(s):  
Thin Film ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Acidic Solution ◽  
Alloy Film ◽  
Surface Oxide Layer ◽  
Alloy Thin Film ◽  
Acidic Solutions ◽  
Thin Film Catalyst

In this study, aged Co–Mo (3:10) alloy film has been demonstrated as an efficient and durable catalyst for hydrogen evolution reaction (HER) in acidic solution. The Co–Mo alloy films with varying Co/Mo atomic ratios have been deposited by magnetron sputtering. The catalytic activity of Mo film is outperformed by the Co–Mo alloys, among which the Co–Mo (3:10) alloy exhibits the highest HER activity with an overpotential of 310 mV at 10 mA cm[Formula: see text] current density, exchange current density of 1.74 × 10[Formula: see text] A cm[Formula: see text] and a Tafel slope of 61 mV dec[Formula: see text]. Combined with the good stability provided by the surface oxide layer, the aged Co–Mo (3:10) alloy is a promising catalyst for HER in acidic solutions.

Few-layer FePS3 decorated with thin MoS2 nanosheets for efficient hydrogen evolution reaction in alkaline and acidic media

2020 ◽  
Vol 525 ◽  
pp. 146623 ◽  
Author(s):  
Hongjiao Huang ◽  
Junnan Song ◽  
Deshuang Yu ◽  
Yanan Hao ◽  
Yonghan Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Mos2 Nanosheets ◽  
Acidic Media

scholarly journals Micro-supercapacitors based on oriented coordination polymer thin films for AC line-filtering

RSC Advances ◽  
2018 ◽  
Vol 8 (53) ◽  
pp. 30624-30628 ◽  
Author(s):  
Weiwei Hua ◽  
Jingwei Xiu ◽  
Fei Xiu ◽  
Zepu Zhang ◽  
Juqing Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Coordination Polymer ◽  
Polymer Thin Films ◽  
Polymer Thin Film ◽  
Electrode Fabrication ◽  
Thin Film Electrodes ◽  
Substrate Independent

Micro-supercapacitors exhibiting excellent AC line-filtering with oriented coordination polymer thin-film electrodes are fabricated based on a substrate-independent electrode fabrication strategy.

Galvanostatically Deposited Ptni Thin-Films As Electrocatalytists for the Hydrogen Evolution Reaction

2020 ◽  
Vol MA2020-01 (37) ◽  
pp. 1535-1535
Author(s):  
Marcelo Videa ◽  
D. Alfonso Crespo-Yapur ◽  
Alejandra Medrano
Keyword(s):  
Thin Films ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction

Enhancing metal–support interaction by in situ ion-exchanging strategy for high performance Pt catalysts in hydrogen evolution reaction

2020 ◽  
Vol 8 (32) ◽  
pp. 16582-16589 ◽  
Author(s):  
Xulei Sui ◽  
Lei Zhang ◽  
Junjie Li ◽  
Kieran Doyle-Davis ◽  
Ruying Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Pt Catalysts ◽  
Acidic Media ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Metal Support Interactions

A facile in situ ion-exchanging strategy directly enhances metal–support interactions between Pt and support and promotes HER electrocatalytic performance in acidic media.

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