MOF-aided topotactic transformation into nitrogen-doped porous Mo2C mesocrystals for upgrading the pH-universal hydrogen evolution reaction

2020 ◽  
Vol 8 (39) ◽  
pp. 20429-20435
Author(s):  
Tengteng Gu ◽  
Rongjian Sa ◽  
Linjie Zhang ◽  
Feng Zhou ◽  
Ruihu Wang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Excellent Performance ◽  
Nitrogen Doped ◽  
High Crystallinity ◽  
Carbon Fiber Paper ◽  
Topotactic Transformation ◽  
Transformation Strategy

A MOFs topotactic transformation strategy for synthesis of N-doped porous Mo2C mesocrystals on carbon fiber paper has been proposed. High crystallinity, porosity and no carbon residues make the hydrogen evolution reaction have excellent performance.

Hydrothermal Synthesis of NiCo2O4 Nanowires on Carbon Fiber Paper for Hydrogen Evolution Catalyst

2018 ◽  
Vol 775 ◽  
pp. 139-143 ◽  
Author(s):  
Luigi A. Dahonog ◽  
Mary Donnabelle L. Balela
Keyword(s):  
Hydrothermal Synthesis ◽  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanowire Arrays ◽  
Hydrothermal Time ◽  
Cathodic Current ◽  
Onset Potential ◽  
Nickel Cobaltite ◽  
Carbon Fiber Paper

Nickel cobaltite (NiCo2O4) nanowires were successfully grown on the surface of carbon fiber via hydrothermal treatment, followed by annealing. After 2 h, SEM revealed the formation of NiCo2O4 nanowire arrays on the surface of the carbon fiber paper. With increasing hydrothermal time from 2 to 12 h, the NiCo2O4 nanowires also self-assembled into urchin-like morphologies. When used as catalysts for hydrogen evolution reaction, the NiCo2O4 nanowires exhibit an onset potential for the cathodic current at-0.13 V vs. Ag/AgCl in 0.1 M KOH.

Composite electrocatalyst MoxW1-xS2 nanosheets on carbon fiber paper for highly efficient hydrogen evolution reaction

2018 ◽  
Vol 22 (10) ◽  
pp. 2969-2976 ◽  
Author(s):  
Qiangbin Yang ◽  
Yi He ◽  
Changjun Zou ◽  
Jizhuang Wang ◽  
Hongjie Li ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Highly Efficient ◽  
Carbon Fiber Paper

scholarly journals Biopolymer-Inspired N-Doped Nanocarbon Using Carbonized Polydopamine: A High-Performance Electrocatalyst for Hydrogen-Evolution Reaction

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 912
Author(s):  
Duong Nguyen Nguyen ◽  
Uk Sim ◽  
Jung Kyu Kim
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Nitrogen Doping ◽  
Cost Effective ◽  
Excellent Performance ◽  
Carbon Nanosheets ◽  
Nitrogen Doped ◽  
Production Of Hydrogen ◽  
Energy Conversion And Storage

Hydrogen-evolution reaction (HER) is a promising technology for renewable energy conversion and storage. Electrochemical HER can provide a cost-effective method for the clean production of hydrogen. In this study, a biomimetic eco-friendly approach to fabricate nitrogen-doped carbon nanosheets, exhibiting a high HER performance, and using a carbonized polydopamine (C-PDA), is described. As a biopolymer, polydopamine (PDA) exhibits high biocompatibility and can be easily obtained by an environmentally benign green synthesis with dopamine. Inspired by the polymerization of dopamine, we have devised the facile synthesis of nitrogen-doped nanocarbons using a carbonized polydopamine for the HER in acidic media. The N-doped nanocarbons exhibit excellent performance for H2 generation. The required overpotential at 5 mA/cm2 is 130 mV, and the Tafel slope is 45 mV/decade. Experimental characterizations confirm that the excellent performance of the N-doped nanocarbons can be attributed to the multisite nitrogen doping, while theoretical computations indicate the promotion effect of tertiary/aromatic nitrogen doping in enhancing the spin density of the doped samples and consequently in forming highly electroactive sites for HER applications.

CoSe2 necklace-like nanowires supported by carbon fiber paper: a 3D integrated electrode for the hydrogen evolution reaction

2015 ◽  
Vol 3 (18) ◽  
pp. 9415-9420 ◽  
Author(s):  
Ke Wang ◽  
Dan Xi ◽  
Chongjian Zhou ◽  
Zhongqi Shi ◽  
Hongyan Xia ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Carbon Fiber Paper

Pyrite-type CoSe2 necklace-like nanowires (NWs) were successfully grown on carbon fiber paper (CFP) and proven to be an efficient electrocatalyst towards the hydrogen evolution reaction (HER).

Hydrothermal synthesis of 3D hierarchical MoSe2/NiSe2 composite nanowires on carbon fiber paper and their enhanced electrocatalytic activity for the hydrogen evolution reaction

2017 ◽  
Vol 5 (37) ◽  
pp. 19752-19759 ◽  
Author(s):  
Long Zhang ◽  
Tao Wang ◽  
Lan Sun ◽  
Yunjin Sun ◽  
Tingwei Hu ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hierarchical Structure ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Active Sites ◽  
Carbon Fiber Paper

A 3D hierarchical structure of MoSe2/NiSe2 exhibits superior HER activity because of more active sites and faster transfer of electrons.

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