نتایج جستجو برای: hydrogen evolution reaction her

تعداد نتایج: 956212  

Journal: :Journal of Electroanalytical Chemistry 2021

• SECM investigation of anomalous hydrogen evolution on 99.9% Mg and AZ63 alloy. Three-stage anodization procedure for the monitoring rates reaction (HER) Separation effects noble impurities from reactivity oxy-hydroxide layer Mg. Enhanced H 2 by facilitating formation either pure Greater pre-polarized surfaces compared to non-polarized ones. With goal facilitate a new experimental anodically-p...

2015
Bing-Joe Hwang Hsiao-Chien Chen Fu-Der Mai Hui-Yen Tsai Chih-Ping Yang John Rick Yu-Chuan Liu

Splitting water for hydrogen production using light, or electrical energy, is the most developed 'green technique'. For increasing efficiency in hydrogen production, currently, the most exciting and thriving strategies are focused on efficient and inexpensive catalysts. Here, we report an innovative idea for efficient hydrogen evolution reaction (HER) utilizing plasmon-activated liquid water wi...

Journal: :Scientific reports 2015
Honglin Li Ke Yu Chao Li Zheng Tang Bangjun Guo Xiang Lei Hao Fu Ziqiang Zhu

The MoS2 and reduced graphite oxide (rGO) composite has attracted intensive attention due to its favorable performance as hydrogen evolution reaction (HER) catalyst, but still lacking is the theoretical understanding from a dynamic perspective regarding to the influence of electron transfer, as well as the connection between conductivity and the promoted HER performance. Based on the first-prin...

Journal: :Nanoscale 2015
Shuang Gao Guo-Dong Li Yipu Liu Hui Chen Liang-Liang Feng Yun Wang Min Yang Dejun Wang Shan Wang Xiaoxin Zou

One of the main barriers blocking sustainable hydrogen production is the use of expensive platinum-based catalysts to produce hydrogen from water. Herein we report the cost-effective synthesis of catalytically active, nitrogen-doped, cobalt-encased carbon nanotubes using inexpensive starting materials-urea and cobalt chloride hexahydrate (CoCl2·6H2O). Moreover, we show that the as-obtained nano...

Journal: :Catalysts 2021

Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The spread over glassy carbon (rGO/GC) used as a support for the spontaneous deposition of Pd. resulting Au/rGO PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have ...

Journal: :Electrochemistry Communications 2021

The hydrogen evolution reaction (HER) is important for the advancement of next-generation electrochemical energy devices. search an alternative inexpensive catalyst conversion to replace expensive and rare noble metals high priority. There has been a significant push investigate electrocatalysis various layered materials evolution. However, electrocatalytic activity MAX phases remains largely u...

Journal: :Advanced Energy Materials 2022

Photoelectrochemical (PEC) water splitting is considered a promising technology to produce renewable hydrogen, clean fuel or energy carrier replace conventional carbon-based fossil-fuel sources. Nevertheless, the overall solar-to-hydrogen efficiency and cost-effectiveness of this are still unsatisfactory for practical implementation. This can be primarily attributed sluggish kinetics anodic oxy...

2012
I. Herraiz - Cardona C. González - Buch E. Ortega V. Pérez - Herranz J. García - Antón

Hydrogen is considered to be the most promising candidate as a future energy carrier. One of the most used technologies for the electrolytic hydrogen production is alkaline water electrolysis. However, due to the high energy requirements, the cost of hydrogen produced in such a way is high. In continuous search to improve this process using advanced electrocatalytic materials for the hydrogen e...

Journal: :Chemistry 2016
Carlo Di Giovanni Carolina Gimbert-Suriñach Michael Nippe Jordi Benet-Buchholz Jeffrey R Long Xavier Sala Antoni Llobet

A new decadentate dinucleating ligand containing a pyridazine bridging group and pyridylic arms has been synthesized and characterized by analytical and spectroscopic techniques. Four new dinuclear cobalt complexes featuring this ligand have been prepared and thoroughly characterized both in the solid state (X-ray diffraction) and in solution (1D and 2D NMR spectroscopy, ESI-MS, and electrochem...

Journal: :Journal of the American Chemical Society 2017
Zhenxing Liang Hyun S Ahn Allen J Bard

The hydrogen evolution reaction (HER) on Ni in alkaline media was investigated by scanning electrochemical microscopy under two operating modes. First, the substrate generation/tip collection mode was employed to extract the "true" cathodic current associated with the HER from the total current in the polarization curve. Compared to metallic Ni, the electrocatalytic activity of the HER is impro...

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