Ultra-low cobalt loading on N-doped carbon nanosheets by polymer pyrolysis strategy for efficient electrocatalytic hydrogen evolution

2020 ◽  
Vol 518 ◽  
pp. 146239 ◽  
Author(s):  
Shuyi Li ◽  
Qiulan Zhou ◽  
Gang Yu ◽  
Zhiyou Lei ◽  
Zhen Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nanosheets ◽  
Polymer Pyrolysis ◽  
Cobalt Loading

3D self-assembly of ultrafine molybdenum carbide confined in N-doped carbon nanosheets for efficient hydrogen production

Nanoscale ◽  
2017 ◽  
Vol 9 (41) ◽  
pp. 15895-15900 ◽  
Author(s):  
Haiqing Wang ◽  
Xiaobin Xu ◽  
Bing Ni ◽  
Haoyi Li ◽  
Wei Bian ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Self Assembly ◽  
Molybdenum Carbide ◽  
Carbon Nanosheets ◽  
Electrocatalytic Performance ◽  
Hierarchical Architectures

3D hierarchical architectures assembled from ultrafine MoC nanoparticles (0D) confined in N-doped conductive carbon nanosheets (2D) exhibit remarkable electrocatalytic performance and stability for the hydrogen evolution reaction (HER).

Pt atoms on doped carbon nanosheets with ultrahigh N content as a superior bifunctional catalyst for hydrogen evolution/oxidation

2021 ◽  
Author(s):  
Zhen Zhang ◽  
Cheng Jiang ◽  
Ping Li ◽  
Qi Feng ◽  
Zhi liang Zhao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxidation Reaction ◽  
Bifunctional Catalyst ◽  
Catalytic Performance ◽  
N Content ◽  
Carbon Nanosheets

Isolated Pt atoms on N-doped carbon nanosheets exhibit excellent bifunctional catalytic performance towards the hydrogen evolution/oxidation reaction (HER/HOR).

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.

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