Ternary Nanohybrids Comprising N-Doped Graphene and WSe2–WO3 Nanosheets Enable High-Mass-Loading Electrodes with Long-Term Stability for Hydrogen Evolution

2021 ◽  
Author(s):  
Seonmyeong Noh ◽  
Thanh-Hai Le ◽  
Hyemi Jo ◽  
Semin Kim ◽  
Hyeonseok Yoon
Keyword(s):  
Hydrogen Evolution ◽  
High Mass ◽  
Mass Loading ◽  
Term Stability ◽  
Long Term Stability ◽  
Doped Graphene

Nanostructured SnS-N-doped graphene as an advanced electrocatalyst for the hydrogen evolution reaction

2015 ◽  
Vol 51 (86) ◽  
pp. 15716-15719 ◽  
Author(s):  
S. S. Shinde ◽  
Abdul Sami ◽  
Dong-Hyung Kim ◽  
Jung-Ho Lee
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Term Stability ◽  
Long Term Stability ◽  
Highly Active ◽  
Doped Graphene ◽  
First Time

The scalable hydrothermal synthesis of the SnS/N-rGr hybrid is presented for the first time, which is used as a highly-active electrocatalyst with long-term stability in different media.

scholarly journals Electrodeposition of palladium-dotted nickel nanowire networks as a robust self-supported methanol electrooxidation catalyst

2021 ◽  
Author(s):  
Tim Boettcher ◽  
Sasho Stojkovikj ◽  
Prashant Khadke ◽  
Ulrike Kunz ◽  
Matthew T. Mayer ◽  
...  
Keyword(s):  
Supported Catalysts ◽  
High Mass ◽  
Potential Cycling ◽  
Free Standing ◽  
Term Stability ◽  
Long Term Stability ◽  
Mass Activity ◽  
Nickel Nanowire ◽  
Nanowire Networks

Abstract Mass activity and long-term stability are two major issues in current fuel cell catalyst designs. While supported catalysts normally suffer from poor long-term stability but show high mass activity, unsupported catalysts tend to perform better in the first point while showing deficits in the latter one. In this study, a facile synthesis route towards self-supported metallic electrocatalyst nanoarchitectures with both aspects in mind is outlined. This procedure consists of a palladium seeding step of ion track-etched polymer templates followed by a nickel electrodeposition and template dissolution. With this strategy, free-standing nickel nanowire networks which contain palladium nanoparticles only in their outer surface are obtained. These networks are tested in anodic half-cell measurements for demonstrating their capability of oxidising methanol in alkaline electrolytes. The results from the electrochemical experiments show that this new catalyst is more tolerant towards high methanol concentrations (up to $${5}\,\hbox{mol}\,\hbox{L}^{-1}$$ 5 mol L - 1 ) than a commercial carbon supported palladium nanoparticle catalyst and provides a much better long-term stability during potential cycling. Graphical Abstract

scholarly journals Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dingwang Huang ◽  
Lintao Li ◽  
Kang Wang ◽  
Yan Li ◽  
Kuang Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Low Cost ◽  
Solar Hydrogen ◽  
Onset Potential ◽  
Term Stability ◽  
Long Term Stability ◽  
Solar Water Splitting ◽  
Current Densities

AbstractA highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that the Cu3BiS3 film-based photocathode meets the abovementioned requirements. The Cu3BiS3-based photocathode presents a remarkable onset potential over 0.9 VRHE with excellent photoelectrochemical current densities (~7 mA/cm2 under 0 VRHE) and appreciable 10-hour long-term stability in neutral water solutions. This high onset potential of the Cu3BiS3-based photocathode directly results in a good unbiased operating photocurrent of ~1.6 mA/cm2 assisted by the BiVO4 photoanode. A tandem device of Cu3BiS3-BiVO4 with an unbiased solar-to-hydrogen conversion efficiency of 2.04% is presented. This tandem device also presents high stability over 20 hours. Ultimately, a 5 × 5 cm2 large Cu3BiS3-BiVO4 tandem device module is fabricated for standalone overall solar water splitting with a long-term stability of 60 hours.

Nanostructured molybdenum phosphide/N,P dual-doped carbon nanotube composite as electrocatalysts for hydrogen evolution

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7370-7377 ◽  
Author(s):  
Yang Zhao ◽  
Shuo Wang ◽  
Chunyan Li ◽  
Xianbo Yu ◽  
Chunling Zhu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Hydrogen Evolution ◽  
Alkaline Media ◽  
Term Stability ◽  
Long Term Stability ◽  
Excellent Activity ◽  
Molybdenum Phosphide ◽  
Carbon Nanotube Composite ◽  
Acidic And Alkaline Media

MoP/N,P dual-doped carbon nanotube composite exhibited excellent activity and long-term stability toward HER both in acidic and alkaline media, superior to most of catalysts reported previously.

Ni nanoparticles oriented on MoO2@BC nanosheets with an outstanding long-term stability for hydrogen evolution reaction

2021 ◽  
pp. 116868
Author(s):  
Bashir Adegbemiga Yusuf ◽  
Meng Xie ◽  
Waleed Yaseen ◽  
Chidinma Judith Oluigbo ◽  
Jimin Xie ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Ni Nanoparticles ◽  
Term Stability ◽  
Long Term Stability

Investigations of the Stability of GaAs for Photoelectrochemical H2 Evolution in Acidic or Alkaline Aqueous Electrolytes

2021 ◽  
Author(s):  
Weilai Yu ◽  
Matthias H Richter ◽  
Ethan D Simonoff ◽  
Bruce S Brunschwig ◽  
Nathan S. Lewis
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Aqueous Electrolytes ◽  
H2 Evolution ◽  
Term Stability ◽  
Long Term Stability ◽  
The Stability

The long-term stability of p-GaAs photocathodes has been investigated for the hydrogen-evolution reaction (HER) in contact with either 1.0 M H2SO4(aq) or 1.0 M KOH(aq). Stability for the HER was...

Self-assembled nanodendritic PdPtCu nanosheets/ Ti2CTx-CNTs electrocatalysts for low overpotential and long-term stable hydrogen evolution reaction

2021 ◽  
Author(s):  
Yong Tan ◽  
Linghan Deng ◽  
Kai Qi ◽  
Chuanxiang Qin ◽  
Si Cheng
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
Term Stability ◽  
Long Term Stability ◽  
Low Overpotential ◽  
Self Assembled

Reducing the overpotential and achieving long-term stability of electrocatalysts are vital for facilitating the catalytic activity of hydrogen evolution reaction (HER). Herein, two-dimensional dendritic PdPtCu nanosheets were prepared and further...

scholarly journals Construction of hierarchical CoP@Ni2P core–shell nanoarrays for efficient electrocatalytic hydrogen evolution in alkaline solution

RSC Advances ◽  
2021 ◽  
Vol 11 (36) ◽  
pp. 22467-22472
Author(s):  
Hao Jin ◽  
Shuo Liu ◽  
Lang Pei ◽  
Gao Li ◽  
Zhanfeng Ma ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Alkaline Solution ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Term Stability ◽  
Long Term Stability

Benefiting from their structural and compositional merits, the as-synthesized CoP@Ni2P core–shell nanoarrays exhibit excellent electrocatalytic activity and long-term stability for HER in 1 M KOH.

Enhanced oxygen and hydrogen evolution performance by carbon-coated CoS2–FeS2 nanosheets

2020 ◽  
Vol 49 (38) ◽  
pp. 13352-13358 ◽  
Author(s):  
Wenpin Wang ◽  
Yue Xu ◽  
Jiali Yao ◽  
Xien Liu ◽  
Zhengmao Yin ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Carbon Layer ◽  
Term Stability ◽  
Long Term Stability ◽  
Overall Water Splitting ◽  
Carbon Coated

A facile one-spot strategy to prepare carbon-layer-coated CoS2–FeS2 heterojunction nanosheets was developed; it exhibited excellent overall water splitting activity with 1.66 V at 10 mA cm−2 and maintained the long-term stability over 26 h.

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