In situ coupled MoO3 with CoP/rGO to construct three-dimensional self-supported catalyst for highly efficient alkaline hydrogen evolution reaction

2022 ◽  
Vol 104 ◽  
pp. 194-201
Author(s):  
Zhuoran Hou ◽  
Di Yang ◽  
Yuntao Xin ◽  
Haoyu Huang ◽  
Xin Hu ◽  
...  
Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 929 ◽  
Author(s):  
Sajjad Hussain ◽  
Kamran Akbar ◽  
Dhanasekaran Vikraman ◽  
Rana Afzal ◽  
Wooseok Song ◽  
...  

To find an effective alternative to scarce, high-cost noble platinum (Pt) electrocatalyst for hydrogen evolution reaction (HER), researchers are pursuing inexpensive and highly efficient materials as an electrocatalyst for large scale practical application. Layered transition metal dichalcogenides (TMDCs) are promising candidates for durable HER catalysts due to their cost-effective, highly active edges and Earth-abundant elements to replace Pt electrocatalysts. Herein, we design an active, stable earth-abundant TMDCs based catalyst, WS(1−x)Sex nanoparticles-decorated onto a 3D porous graphene/Ni foam. The WS(1−x)Sex/graphene/NF catalyst exhibits fast hydrogen evolution kinetics with a moderate overpotential of ~−93 mV to drive a current density of 10 mA cm−2, a small Tafel slope of ~51 mV dec−1, and a long cycling lifespan more than 20 h in 0.5 M sulfuric acid, which is much better than WS2/NF and WS2/graphene/NF catalysts. Our outcomes enabled a way to utilize the TMDCs decorated graphene and precious-metal-free electrocatalyst as mechanically robust and electrically conductive catalyst materials.


Author(s):  
Zijian Li ◽  
Haeseong Jang ◽  
Danni Qin ◽  
Xiaoli Jiang ◽  
Xuqiang Ji ◽  
...  

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...


2017 ◽  
Vol 41 (9) ◽  
pp. 3344-3351 ◽  
Author(s):  
Ali Reza Madram ◽  
Samane Asadi

In situ activated 3D-Ni by Mo ions in alkaline solution studied by various electrochemical methods for the hydrogen evolution reaction (HER).


2018 ◽  
Vol 54 (49) ◽  
pp. 6388-6391 ◽  
Author(s):  
Lin Ye ◽  
Zhenhai Wen

Cu/Cu2O–CuO/rGO nanowire arrays was fabricated as a highly efficient HER catalyst with a small onset potential and low overpotential.


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