scholarly journals PtNi Alloy Coated in Porous Nitrogen-Doped Carbon as Highly Efficient Catalysts for Hydrogen Evolution Reactions

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 499
Author(s):  
Xuyan Song ◽  
Yunlu He ◽  
Bo Wang ◽  
Sanwen Peng ◽  
Lin Tong ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Charge Transfer Resistance ◽  
Hydrogen Energy ◽  
Simple Method ◽  
Transfer Resistance ◽  
Characterization Methods ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Nitrogen Doped Carbon ◽  
Ptni Alloy

The development of low platinum loading hydrogen evolution reaction (HER) catalysts with high activity and stability is of great significance to the practical application of hydrogen energy. This paper reports a simple method to synthesize a highly efficient HER catalyst through coating a highly dispersed PtNi alloy on porous nitrogen-doped carbon (MNC) derived from the zeolite imidazolate skeleton. The catalyst is characterized and analyzed by physical characterization methods, such as XRD, SEM, TEM, BET, XPS, and LSV, EIS, it, v-t, etc. The optimized sample exhibits an overpotential of only 26 mV at a current density of 10 mA cm−2, outperforming commercial 20 wt% Pt/C (33 mV). The synthesized catalyst shows a relatively fast HER kinetics as evidenced by the small Tafel slope of 21.5 mV dec−1 due to the small charge transfer resistance, the alloying effect between Pt and Ni, and the interaction between PtNi alloy and carrier.

Well-dispersed molybdenum nitrides on a nitrogen-doped carbon matrix for highly efficient hydrogen evolution in alkaline media

2017 ◽  
Vol 5 (39) ◽  
pp. 20932-20937 ◽  
Author(s):  
Zhe Lv ◽  
Muhammad Tahir ◽  
Xuewei Lang ◽  
Gang Yuan ◽  
Lun Pan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Matrix ◽  
Alkaline Media ◽  
Alkaline Electrolyte ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Molybdenum Nitrides ◽  
Nitrogen Doped Carbon

A strategy is designed to fabricate well-dispersed Mo2N nanoparticles on nitrogen-doped carbon as a new and effective electrocatalyst for hydrogen evolution in alkaline electrolyte.

Low-ruthenium-content NiRu nanoalloys encapsulated in nitrogen-doped carbon as highly efficient and pH-universal electrocatalysts for the hydrogen evolution reaction

2018 ◽  
Vol 6 (4) ◽  
pp. 1376-1381 ◽  
Author(s):  
You Xu ◽  
Shuli Yin ◽  
Chunjie Li ◽  
Kai Deng ◽  
Hairong Xue ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Efficient Catalyst ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Wide Ph Range ◽  
Ph Range ◽  
Nitrogen Doped Carbon

A NiRu@N–C hybrid is fabricated and tested as an efficient catalyst for the hydrogen evolution reaction in a wide pH range.

Ultrasmall MoP encapsulated in nitrogen-doped carbon hybrid frameworks for highly efficient hydrogen evolution reaction in both acid and alkaline solutions

2019 ◽  
Vol 6 (6) ◽  
pp. 1482-1489 ◽  
Author(s):  
Xiaokang Huang ◽  
Xiang Wang ◽  
Pengbo Jiang ◽  
Kai Lan ◽  
Jiaheng Qin ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Solutions ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Nitrogen Doped Carbon

Ultrasmall MoP encapsulated in N-doped carbon shows outstanding HER activities in both acid and alkaline solutions.

scholarly journals A universal pH range and a highly efficient Mo2C-based electrocatalyst for the hydrogen evolution reaction

2020 ◽  
Vol 8 (38) ◽  
pp. 19879-19886
Author(s):  
Jiajia Huang ◽  
Jingyi Wang ◽  
Ruikuan Xie ◽  
Zhihong Tian ◽  
Guoliang Chai ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Carbon Matrix ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Molybdenum Carbides ◽  
Ph Range ◽  
Nitrogen Doped Carbon

We designed a series of transition metal-modified molybdenum carbides in nitrogen doped carbon matrix for investigating and boosting the performance of Mo2C-based electrocatalysts in all-pH media by increasing the Mo2+ content in catalysts.

NiRu nanoparticles encapsulated in a nitrogen-doped carbon matrix as a highly efficient electrocatalyst for the hydrogen evolution reaction

2020 ◽  
Vol 49 (39) ◽  
pp. 13647-13654 ◽  
Author(s):  
Shikai Xu ◽  
Zhiqiang Li ◽  
Kainian Chu ◽  
Ge Yao ◽  
Yang Xu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Carbon Matrix ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Alkaline Electrolytes ◽  
Nitrogen Doped Carbon

We synthesize ultrafine NiRu nanoparticles embedded in a nitrogen-doped carbon matrix through direct carbonization of Ru-doped Ni-based MOFs. As expected, NiRu2@NC-600 exhibits superior electrocatalytic activity for the HER in acidic and alkaline electrolytes.

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