scholarly journals Design and development of defect rich titania nanostructure for efficient electrocatalyst for hydrogen evolution reaction in an acidic electrolyte

2021 ◽  
Author(s):  
Murugesan Praveen Kumar ◽  
Govindhasamy Murugadoss ◽  
Ramalinga Viswanathan Mangalaraja ◽  
Prabhakarn Arunachalam ◽  
Manavalan Rajesh Kumar ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Design And Development ◽  
Acidic Electrolyte

MOF-derived hierarchical 3D bi-doped CoP nanoflower eletrocatalyst for hydrogen evolution reaction in both acidic and alkaline media

2020 ◽  
Vol 56 (56) ◽  
pp. 7702-7705 ◽  
Author(s):  
Lei Guo ◽  
Xue Bai ◽  
Hui Xue ◽  
Jing Sun ◽  
Tianshan Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Alkaline Media ◽  
Alkaline Electrolyte ◽  
Acidic Electrolyte ◽  
Acidic And Alkaline Media ◽  
A Current

A 3D hierarchical Bi-doped CoP nanoflowers electrocatalyst is developed based on a MOF self-sacrifice strategy. The 3% Bi/CoP catalyst delivers a current density of 10 mA cm−2 at low overpotentials of 122 mV in alkaline electrolyte and 150 mV in acidic electrolyte.

scholarly journals Silicon Nanowires with MoSxand Pt as Electrocatalysts for Hydrogen Evolution Reaction

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
S. H. Hsieh ◽  
S. T. Ho ◽  
W. J. Chen
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Silicon Nanowires ◽  
Electrochemical Impedance ◽  
Silicon Nanowire ◽  
Electrochemical Characterizations ◽  
Pt Nanoparticle ◽  
Transmission Electron ◽  
Acidic Electrolyte ◽  
Nanocomposite Catalysts

A convenient method was used for synthesizing Pt-nanoparticle/MoSx/silicon nanowires nanocomposites. Obtained Pt-MoSx/silicon nanowires electrocatalysts were characterized by transmission electron microscopy (TEM). The hydrogen evolution reaction efficiency of the Pt-MoSx/silicon nanowire nanocomposite catalysts was assessed by examining polarization and electrolysis measurements under solar light irradiations. The electrochemical characterizations demonstrate that Pt-MoSx/silicon nanowire electrodes exhibited an excellent catalytic activity for hydrogen evolution reaction in an acidic electrolyte. The hydrogen production capability of Pt-MoSx/silicon nanowires is also comparable toMoSx/silicon nanowires and Pt/silicon nanowires. Electrochemical impedance spectroscopy experiments suggest that the enhanced performance of Pt-MoSx/silicon nanowires can be attributed to the fast electron transfer between Pt-MoSx/silicon nanowire electrodes and electrolyte interfaces.

Oxidative chemical vapour deposition of a graphene oxide carbocatalyst on 3D nickel foam as a collaborative electrocatalyst towards the hydrogen evolution reaction in acidic electrolyte

2018 ◽  
Vol 2 (6) ◽  
pp. 1305-1311 ◽  
Author(s):  
Sangchai Sarawutanukul ◽  
Nutthaphon Phattharasupakun ◽  
Juthaporn Wutthiprom ◽  
Montree Sawangphruk
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Hydrogen Evolution ◽  
Chemical Vapour Deposition ◽  
Hydrogen Evolution Reaction ◽  
Vapour Deposition ◽  
Nickel Foam ◽  
Chemical Vapour ◽  
Ni Foam ◽  
Acidic Electrolyte

In this study, a graphene oxide (GO) carbocatalyst was synthesized as a thin film on a 3D Ni foam substrate (GO@Ni) by oxidative chemical vapour deposition (CVD) using methanol and water as precursors.

NiCoPt/graphene-dot nanosponge as a highly stable electrocatalyst for efficient hydrogen evolution reaction in acidic electrolyte

2020 ◽  
Vol 849 ◽  
pp. 156651 ◽  
Author(s):  
Ngoc-Anh Nguyen ◽  
Yousuf Ali ◽  
Van-Toan Nguyen ◽  
Oleksii Omelianovych ◽  
Liudmila L. Larina ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Acidic Electrolyte

scholarly journals N,P-Codoped Carbon Layer Coupled with MoP Nanoparticles as an Efficient Electrocatalyst for Hydrogen Evolution Reaction

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1316 ◽  
Author(s):  
Shuai Wang ◽  
Jia Wang ◽  
Ping Li ◽  
Zexing Wu ◽  
Xien Liu
Keyword(s):  
High Temperature ◽  
Hydrogen Evolution ◽  
Significant Role ◽  
Hydrogen Evolution Reaction ◽  
Carbon Layer ◽  
Hydrogen Energy ◽  
Pt Catalysts ◽  
Onset Potential ◽  
Design And Synthesis ◽  
Acidic Electrolyte

Efficient electrocatalyst plays a significant role on the development of hydrogen energy. In this work, an N,P-codoped carbon layer coupled with MoP nanoparticles (MoP/NPCs) was prepared through a facile high-temperature pyrolysis treatment. The obtained MoP/NPCs presented efficient activity for hydrogen evolution reaction (HER), with low onset potential of 90 mV, and a small Tafel slope (71 mV dec−1), as well as extraordinary stability in acidic electrolyte. This work provides a new facile strategy for the design and synthesis of sustainable and effective molybdenum-based electrocatalysts as alternatives to non-Pt catalysts for HER.

scholarly journals Room-Temperature Preparation of Cobalt-Based Electrocatalysts through Simple Solution Treatment for Selectively High-Efficiency Hydrogen Evolution Reaction in Alkaline or Acidic Medium

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Zheng Chen ◽  
Wenjun Luo ◽  
Feng Du ◽  
Ruyi Wang ◽  
Liang Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Room Temperature ◽  
High Efficiency ◽  
Solution Treatment ◽  
Temperature Treatment ◽  
Alkaline Electrolyte ◽  
Oxide Nanorods ◽  
Acidic Electrolyte ◽  
Electrolyte Ph

The versatile cobalt-phosphorus (Co-P) precursor was synthesized on Ni foam (NF) with an electrodeposition method. Simple room-temperature treatment of the precursor with 1 M NaOH and 0.5 M H2SO4 allows for the production of cobalt oxide nanorods (CoxOy/NF) and cobalt phosphate/phosphide (Co-Pi/CoP/NF), respectively. The resulting CoxOy/NF shows a low overpotential (η10) of 80 mV at −10 mA/cm2 in an alkaline electrolyte (pH = 14) for a hydrogen evolution reaction (HER) toward electrocatalytic water splitting. The Co-Pi/CoP/NF exhibits a low η10 of 112 mV in an acidic electrolyte (pH = 0), in which the synergy between Co (+2) and Co (+3) may play an important role in the reaction.

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