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.

Flower-like tungsten-doped Fe–Co phosphides as efficient electrocatalysts for hydrogen evolution reaction

CrystEngComm ◽  
2021 ◽  
Author(s):  
Qian Zhang ◽  
Shuihua Tang ◽  
Lieha Shen ◽  
Weixiang Yang ◽  
Zhen Tang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Adsorption Energy ◽  
High Performance ◽  
Hydrogen Adsorption ◽  
Cost Effective

Developing cost-effective and high-performance electrocatalysts for hydrogen evolution reaction (HER) are imperative thanks to rapid increase of fuel-cell driven vehicles. Tungsten (W) possesses advantages of optimized hydrogen adsorption energy and...

scholarly journals Ball Milling-Assisted Synthesis of Ultrasmall Ruthenium Phosphide for Efficient Hydrogen Evolution Reaction

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 240 ◽  
Author(s):  
Xiaofei Liu ◽  
Yanglong Guo ◽  
Wangcheng Zhan ◽  
Tian Jin
Keyword(s):  
Ball Milling ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Cost Effective ◽  
Treatment Method ◽  
Post Treatment ◽  
Practical Applications ◽  
Highly Efficient ◽  
Conventional Solution

The development of scalable hydrogen production technology to produce hydrogen economically and in an environmentally friendly way is particularly important. The hydrogen evolution reaction (HER) is a clean, renewable, and potentially cost-effective pathway to produce hydrogen, but it requires the use of a favorable electrocatalyst which can generate hydrogen with minimal overpotential for practical applications. Up to now, ruthenium phosphide Ru2P has been considered as a high-performance electrocatalyst for the HER. However, a tedious post-treatment method as well as large consumption of solvents in conventional solution-based synthesis still limits the scalable production of Ru2P electrocatalysts in practical applications. In this study, we report a facile and cost-effective strategy to controllably synthesize uniform ultrasmall Ru2P nanoparticles embedded in carbon for highly efficient HER. The key to our success lies in the use of a solid-state ball milling-assisted technique, which overcomes the drawbacks of the complicated post-treatment procedure and large solvent consumption compared with solution-based synthesis. The obtained electrocatalyst exhibits excellent Pt-like HER performance with a small overpotential of 36 mV at current density of 10 mA cm−2 in 1 M KOH, providing new opportunities for the fabrication of highly efficient HER electrocatalysts in real-world applications.

Nickel phosphide nanosphere: A high-performance and cost-effective catalyst for hydrogen evolution reaction

2016 ◽  
Vol 41 (45) ◽  
pp. 20515-20522 ◽  
Author(s):  
Lei Wan ◽  
Jinfeng Zhang ◽  
Yaqiong Chen ◽  
Cheng Zhong ◽  
Wenbin Hu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Cost Effective ◽  
Nickel Phosphide ◽  
Effective Catalyst

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.

scholarly journals Cobalt/nitrogen codoped carbon nanosheets derived from catkins as a high performance non-noble metal electrocatalyst for oxygen reduction reaction and hydrogen evolution reaction

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43248-43255
Author(s):  
Luting Song ◽  
Jinquan Chang ◽  
Yanhong Ma ◽  
Xinghua Tan ◽  
Yuanqing Xu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Reduction Reaction ◽  
Carbon Nanosheets ◽  
Hydrogen Evolution Reactions ◽  
Co Doped

We prepare highly efficient NPM catalysts of cobalt and nitrogen co-doped carbon nanosheets for oxygen reduction and hydrogen evolution reactions using catkin biomass.

scholarly journals 2D-Layered Non-Precious Electrocatalysts for Hydrogen Evolution Reaction: Fundamentals to Applications

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 689
Author(s):  
Prasanta Kumar Sahoo ◽  
Soubhagya Ranjan Bisoi ◽  
Yi-June Huang ◽  
Dung-Sheng Tsai ◽  
Chuan-Pei Lee
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Cost Effective ◽  
Clean Energy ◽  
Layered Materials ◽  
Scale Production ◽  
Highly Efficient ◽  
2D Layered Materials ◽  
Production Of Hydrogen

The production of hydrogen via the water splitting process is one of the most promising technologies for future clean energy requirements, and one of the best related challenges is the choice of the most highly efficient and cost effective electrocatalyst. Conventional electrocatalysts based on precious metals are rare and very-expensive for large-scale production of hydrogen, demanding the exploration for low-cost earth abundant alternatives. In this context, extensive works from both theoretical and experimental investigations have shown that two-dimensional (2D) layered materials have gained considerable attention as highly effective electrocatalytic materials for electrical-driven hydrogen production because of their unique layered structure and exciting electrical properties. This review highlights recent advancements on 2D layered materials, including graphene, transitional metal dichalcogenides (TMDs), layered double hydroxides (LDHs), MXene, and graphitic carbon nitride (g-C3N4) as cost-effective and highly efficient electrocatalysts for hydrogen production. In addition, some fundamental aspects of the hydrogen evolution reaction (HER) process and a wide ranging overview on several strategies to design and synthesize 2D layered material as HER electrocatalysts for commercial applications are introduced. Finally, the conclusion and futuristic prospects and challenges of the advancement of 2D layered materials as non-precious HER electrocatalysts are briefly discussed.

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