MOF-derived nanostructured cobalt phosphide assemblies for efficient hydrogen evolution reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90265-90271 ◽  
Author(s):  
Lili Li ◽  
Xingyue Li ◽  
Lunhong Ai ◽  
Jing Jiang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
High Performance ◽  
Cathodic Current Density ◽  
Cathodic Current ◽  
Zeolitic Imidazolate Framework ◽  
Cobalt Phosphide ◽  
Low Overpotential

Zeolitic imidazolate framework-67 derived nanostructured CoP assemblies exhibited high-performance for electrochemical HER, as manifested by a low overpotential, a large cathodic current density and an excellent durability.

Graphene oxide supported cobalt phosphide nanorods designed from a molecular complex for efficient hydrogen evolution at low overpotential

2019 ◽  
Vol 55 (15) ◽  
pp. 2186-2189 ◽  
Author(s):  
Alpesh K. Sharma ◽  
Hemant Joshi ◽  
Kasinath Ojha ◽  
Ajai K. Singh
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Evolution ◽  
Current Density ◽  
Molecular Complex ◽  
Cathodic Current Density ◽  
Cathodic Current ◽  
Cobalt Phosphide ◽  
Low Overpotential

The cathodic current density (cd) of GO-Co2P is 20/100 mA cm−2 at an overpotential of 80/154 mV. At 100 mA cm−2 cd, stability is observed for 70 h.

scholarly journals Atomic Pt-Clusters Decoration Triggers a High-Rate Performance on Ni@Pd Bimetallic Nanocatalyst for Hydrogen Evolution Reaction in Both Alkaline and Acidic Medium

2020 ◽  
Vol 10 (15) ◽  
pp. 5155 ◽  
Author(s):  
Dinesh Bhalothia ◽  
Sheng-Po Wang ◽  
Shuan Lin ◽  
Che Yan ◽  
Kuan-Wen Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Acidic Medium ◽  
Lattice Mismatch ◽  
Cathodic Current Density ◽  
Green Energy ◽  
High Rate ◽  
Pt Catalyst ◽  
Cathodic Current

The development of inexpensive and highly robust nanocatalysts (NCs) to boost electrochemical hydrogen evolution reaction (HER) strengthens the implementation of several emerging sustainable-energy technologies. Herein, we proposed a novel nano-architecture consisting of a hierarchical structured Ni@Pd nanocatalyst with Pt-clusters decoration on the surface (denoted by Ni@Pd-Pt) for HER application in acidic (0.5 M H2SO4) and alkaline (0.1 M KOH) mediums. The Ni@Pd-Pt NC is fabricated on a carbon black support via a “self-aligned” heterogeneous nucleation-crystal growth mechanism with 2 wt.% Pt-content. As-prepared Ni@Pd-Pt NC outperforms the standard Pt/C (30 wt.% Pt) catalyst in HER and delivers high-rate catalytic performance with an ultra-low overpotential (11.5 mV) at the cathodic current density of 10 mA∙cm−2 in alkaline medium, which is 161.5 mV and 14.5 mV less compared to Ni@Pd (173 mV) and standard Pt/C (26 mV) catalysts, respectively. Moreover, Ni@Pd-Pt NC achieves an exactly similar Tafel slope (42 mV∙dec−1) to standard Pt/C, which is 114 mV∙dec−1 lesser when compared to Ni@Pd NC. Besides, Ni@Pd-Pt NC exhibits an overpotential value of 37 mV at the current density of 10 mA cm−2 in acidic medium, which is competitive to standard Pt/C catalyst. By utilizing physical characterizations and electrochemical analysis, we demonstrated that such an aggressive HER activity is dominated by the increased selectivity during HER due to the reduced competition between intermediate products on the non-homogeneous NC surface. This phenomenon can be rationalized by electron localization owing to the electronegative difference (χPt > χPd > χNi) and strong lattice mismatch at the Ni@Pd heterogeneous binary interfaces. We believe that the obtained results will significantly provide a facile design strategy to develop next-generation heterogenous NCs for HER and related green-energy applications

A robust electrocatalytic activity toward the hydrogen evolution reaction from W/W2C heterostructured nanoparticles coated with a N,P dual-doped carbon layer

2019 ◽  
Vol 55 (65) ◽  
pp. 9665-9668 ◽  
Author(s):  
Quan Zhang ◽  
Fang Luo ◽  
Hao Hu ◽  
Ruizhi Xu ◽  
Konggang Qu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Electrocatalytic Activity ◽  
Carbon Layer ◽  
Cathodic Current Density ◽  
Cathodic Current ◽  
Alkaline Electrolytes

W/W2C heterostructured nanoparticles encapsulated by N,P dual-doped carbon require low overpotentials of 55 mV and 82 mV vs. RHE to achieve cathodic current density of 10 mA cm−2 in acidic and alkaline electrolytes, respectively.

Molybdenum carbide nanocrystal embedded N-doped carbon nanotubes as electrocatalysts for hydrogen generation

2015 ◽  
Vol 3 (11) ◽  
pp. 5783-5788 ◽  
Author(s):  
Kai Zhang ◽  
Yang Zhao ◽  
Diyu Fu ◽  
Yujin Chen
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Molybdenum Carbide ◽  
Hydrogen Generation ◽  
Cathodic Current Density ◽  
Exchange Current ◽  
Exchange Current Density ◽  
Cathodic Current

Highly conductive N-doped carbon nanotubes embedded with molybdenum carbide nanocrystals with a size less than 3 nm exhibit superior activity for the hydrogen evolution reaction, including small overpotential, large cathodic current density and high exchange current density.

Porous Co–P foam as an efficient bifunctional electrocatalyst for hydrogen and oxygen evolution reactions

2016 ◽  
Vol 4 (47) ◽  
pp. 18272-18277 ◽  
Author(s):  
SeKwon Oh ◽  
HyoWon Kim ◽  
YongKuen Kwon ◽  
MinJoong Kim ◽  
EunAe Cho ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
High Performance ◽  
Cathodic Current Density ◽  
Cathodic Current ◽  
Bifunctional Electrocatalyst ◽  
One Step

A high-performance bifunctional Co–P foam catalyst was successfully synthesized by facile one-step electrodeposition at a high cathodic current density.

Metal–organic framework-derived nickel phosphides as efficient electrocatalysts toward sustainable hydrogen generation from water splitting

RSC Advances ◽  
2015 ◽  
Vol 5 (14) ◽  
pp. 10290-10295 ◽  
Author(s):  
Tian Tian ◽  
Lunhong Ai ◽  
Jing Jiang
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
High Performance ◽  
Hydrogen Generation ◽  
Metal Organic Framework ◽  
Cathodic Current Density ◽  
Cathodic Current ◽  
Nickel Phosphides ◽  
Metal Organic ◽  
Organic Framework

Ni-based metal–organic framework (MOF)-derived Ni2P nanoparticles exhibited high-performance for electrochemical HER, as manifested by a low overpotential and a large cathodic current density.

Cr‐Doped CoP Nanorod Arrays as High‐Performance Hydrogen Evolution Reaction Catalysts at High Current Density

Small ◽  
2021 ◽  
pp. 2100832
Author(s):  
Lipeng Zhang ◽  
Juntao Zhang ◽  
Jinjie Fang ◽  
Xin‐Yu Wang ◽  
Likun Yin ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
High Performance ◽  
High Current Density ◽  
Nanorod Arrays ◽  
High Current

Pt-like catalytic behavior of MoNi decorated CoMoO3 cuboid arrays for the hydrogen evolution reaction

2018 ◽  
Vol 6 (32) ◽  
pp. 15558-15563 ◽  
Author(s):  
Dewen Wang ◽  
Ce Han ◽  
Zhicai Xing ◽  
Qun Li ◽  
Xiurong Yang
Keyword(s):  
Synergistic Effect ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
High Hydrogen ◽  
Catalytic Behavior ◽  
Unique Structure ◽  
Low Overpotential ◽  
A Current

Owing to the unique structure and synergistic effect between MoNi and CoMoO3, the MoNi/CoMoO3/NF exhibits high hydrogen evolution activity which requires a low overpotential of only 18 mV to deliver a current density of 10 mA cm−2.

P doped Co2Mo3Se nanosheets grown on carbon fiber cloth as an efficient hybrid catalyst for hydrogen evolution

2017 ◽  
Vol 5 (24) ◽  
pp. 12043-12047 ◽  
Author(s):  
Yaxiao Guo ◽  
Zhaoyang Yao ◽  
Changshuai Shang ◽  
Erkang Wang
Keyword(s):  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Current Density ◽  
Synergistic Effects ◽  
Cathodic Current Density ◽  
Hybrid Catalyst ◽  
Cathodic Current ◽  
Tafel Slope ◽  
Carbon Fiber Cloth ◽  
Excellent Cycling Stability

Owing to the prominent synergistic effects, P-Co2Mo3Se/CFC hybrid catalyst exhibits a superior HER activity with a small overpotential of 71 mV at cathodic current density of 10 mA cm−2, and a small Tafel slope of 43.6 mV dec−1, as well as excellent cycling stability.

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