In situ coupling of CoP with MoO2 for enhanced hydrogen evolution

2020 ◽  
Vol 8 (31) ◽  
pp. 16018-16023
Author(s):  
Jun Wang ◽  
Hui Cheng ◽  
Shiyu Ren ◽  
Lili Zhang ◽  
Liang-Xin Ding ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Highly Active

The development of highly active and stable catalysts based on low-cost materials for the hydrogen evolution reaction (HER) is crucial to catalytic water splitting.

Alloy-Strain-Output Induced Lattice Dislocation in Ni3FeN/Ni3Fe Ultrathin Nanosheets for Highly Efficient Overall Water Splitting

2021 ◽  
Author(s):  
Zijian Li ◽  
Haeseong Jang ◽  
Danni Qin ◽  
Xiaoli Jiang ◽  
Xuqiang Ji ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Microstructure Evolution ◽  
Low Cost ◽  
Lattice Dislocation ◽  
Ultrathin Nanosheets ◽  
Highly Efficient ◽  
Partial Lattice

Designing highly efficient, stable and low-cost bifunctional electrocatalysts based on in-situ microstructure evolution, especially achieving partial lattice dislocation on highly crystalline texture, to catalyze hydrogen evolution reaction (HER) and oxygen...

Ternary PtVCo dendrites for the hydrogen evolution reaction, oxygen evolution reaction, overall water splitting and rechargeable Zn–air batteries

2018 ◽  
Vol 5 (10) ◽  
pp. 2425-2431 ◽  
Author(s):  
Zhaoqing Ding ◽  
Zhenghua Tang ◽  
Ligui Li ◽  
Kai Wang ◽  
Wen Wu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Cost Effective ◽  
Energy Sources ◽  
Overall Water Splitting ◽  
Highly Active ◽  
Air Battery

Designing a highly active, robust and cost-effective electrocatalyst with multiple functionalities toward overall water splitting and rechargeable Zn–air battery applications is crucial and urgent for the development of sustainable energy sources.

scholarly journals Revealing the effect of electrocatalytic performance boost during hydrogen evolution reaction on free-standing SWCNT film electrode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Karolina Kordek-Khalil ◽  
Dawid Janas ◽  
Piotr Rutkowski
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
High Surface ◽  
Water Electrolysis ◽  
Free Standing ◽  
Highly Active ◽  
Electrocatalytic Performance

AbstractLarge-scale sustainable hydrogen production by water electrolysis requires a highly active yet low-cost hydrogen evolution reaction (HER) electrocatalyst. Conductive carbon nanomaterials with high surface areas are promising candidates for this purpose. In this contribution, single-walled carbon nanotubes (SWCNTs) are assembled into free-standing films and directly used as HER electrodes. During the initial 20 h of electrocatalytic performance in galvanostatic conditions, the films undergo activation, which results in a gradual overpotential decrease to the value of 225 mV. Transient physicochemical properties of the films at various activation stages are characterized to reveal the material features responsible for the activity boost. Results indicate that partial oxidation of iron nanoparticles encapsulated in SWCNTs is the major contributor to the activity enhancement. Furthermore, besides high activity, the material, composed of only earth-abundant elements, possesses exceptional performance stability, with no activity loss for 200 h of galvanostatic performance at − 10 mA cm−2. In conclusion, the work presents the strategy of engineering a highly active HER electrode composed of widely available elements and provides new insights into the origins of electrocatalytic performance of SWCNT-based materials in alkaline HER.

Low‐Cost Porous Ruthenium Layer Deposited on Nickel Foam as a Highly Active Universal‐pH Electrocatalyst for the Hydrogen Evolution Reaction

ChemSusChem ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2780-2787 ◽  
Author(s):  
Jiawei Xia ◽  
Michael Volokh ◽  
Guiming Peng ◽  
Yongsheng Fu ◽  
Xin Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Foam ◽  
Low Cost ◽  
Highly Active

Two-dimensional TaC nanosheets on a reduced graphene oxide hybrid as an efficient and stable electrocatalyst for water splitting

2016 ◽  
Vol 52 (57) ◽  
pp. 8810-8813 ◽  
Author(s):  
Chunyong He ◽  
Juzhou Tao
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
Highly Active ◽  
Reduced Graphene

A novel highly active and stable HER catalyst containing two-dimensional TaC nanosheets hybridized with reduced graphene oxide (2D TaC–RGO) was prepared as an efficient and stable hydrogen evolution reaction catalyst.

In Situ Evolution of Ru4Al13 Crystals into a Highly Active Catalyst for the Hydrogen Evolution Reaction

2021 ◽  
Vol 33 (17) ◽  
pp. 7124-7131
Author(s):  
Kriti Seth ◽  
Albert J. Darling ◽  
Cameron F. Holder ◽  
Yihuang Xiong ◽  
Jeffrey R. Shallenberger ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Catalyst ◽  
Highly Active

In-situ Derived Highly Active NiS2 and MoS2 Nanosheets on NiMoO4 Microcuboids via Controlled Surface Sulfidation for High-current-density Hydrogen Evolution Reaction

2021 ◽  
pp. 138733
Author(s):  
Shu Hearn Yu ◽  
Pranjal Kumar Gogoi ◽  
Ashutosh Rath ◽  
Haiwen Dai ◽  
Zhen Quan Cavin Ng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
High Current Density ◽  
High Current ◽  
Mos2 Nanosheets ◽  
Highly Active

One-dimensional hierarchical MoO2–MoSxhybrids as highly active and durable catalysts in the hydrogen evolution reaction

2018 ◽  
Vol 47 (17) ◽  
pp. 6041-6048 ◽  
Author(s):  
Yu Qiu ◽  
Liying Chai ◽  
Yi Su ◽  
Ping Li ◽  
Wenyu Yuan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hybrid Structures ◽  
Synthetic Method ◽  
One Dimensional ◽  
Highly Active ◽  
Cyclic Durability

A kind of 1D MoO2–MoSxhybrid structures was synthesizedviaa facilein-situsynthetic method. The obtained MoO2–MoSxcatalysts delivered high electrocatalytic activity and excellent cyclic durability in HER.

scholarly journals Crystalline/amorphous CoP@CoB hierarchical core-shell nanorod array for enhanced hydrogen evolution

2021 ◽  
Author(s):  
Peidong Shi ◽  
Yu Zhang ◽  
Guanglu Zhang ◽  
Xiaojuan Zhu ◽  
Shao-Hua Wang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Cost Effective ◽  
Nanorod Array ◽  
Core Shell ◽  
Highly Active ◽  
Electrochemical Water Splitting

Highly active, durable and cost-effective catalysts toward hydrogen evolution reaction (HER) are crucial for widespread use of electrochemical water splitting in hydrogen production. Herein, a hierarchical core-shell nanorod array comprising...

scholarly journals Ni3Se4@MoSe2 Composites for Hydrogen Evolution Reaction

2019 ◽  
Vol 9 (23) ◽  
pp. 5035 ◽  
Author(s):  
Wenwu Guo ◽  
Quyet Van Le ◽  
Ha Huu Do ◽  
Amirhossein Hasani ◽  
Mahider Tekalgne ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Performance Improvement ◽  
Hydrogen Evolution Reaction ◽  
High Surface ◽  
High Surface Area ◽  
Transition Metal Dichalcogenides ◽  
Accelerate Electron ◽  
Highly Active ◽  
Metal Dichalcogenides

Transition metal dichalcogenides (TMDs) have been considered as one of the most promising electrocatalysts for the hydrogen evolution reaction (HER). Many studies have demonstrated the feasibility of significant HER performance improvement of TMDs by constructing composite materials with Ni-based compounds. In this work, we prepared Ni3Se4@MoSe2 composites as electrocatalysts for the HER by growing in situ MoSe2 on the surface of Ni3Se4 nanosheets. Electrochemical measurements revealed that Ni3Se4@MoSe2 nanohybrids are highly active and durable during the HER process, which exhibits a low onset overpotential (145 mV) and Tafel slope (65 mV/dec), resulting in enhanced HER performance compared to pristine MoSe2 nanosheets. The enhanced HER catalytic activity is ascribed to the high surface area of Ni3Se4 nanosheets, which can both efficiently prevent the agglomeration issue of MoSe2 nanosheets and create more catalytic edge sites, hence accelerate electron transfer between MoSe2 and the working electrode in the HER. This approach provides an effective pathway for catalytic enhancement of MoSe2 electrocatalysts and can be applied for other TMD electrocatalysts.

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