In Situ Optical Quantification of Adsorbates and Surface Charges on Copper Crystals and Their Impact on the Hydrogen Evolution Reaction in Hydrochloric Electrolytes

2018 ◽  
Vol 122 (16) ◽  
pp. 8984-8997 ◽  
Author(s):  
Miao-Hsuan Chien ◽  
Saul Vazquez-Miranda ◽  
Reza Sharif ◽  
Kurt Hingerl ◽  
Christoph Cobet
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Surface Charges ◽  
Copper Crystals

In Situ Identifying the Dynamic Structure behind Activity of Atomically Dispersed Platinum Catalyst toward Hydrogen Evolution Reaction

Small ◽  
2021 ◽  
Vol 17 (16) ◽  
pp. 2005713
Author(s):  
Jiali Wang ◽  
Hui‐Ying Tan ◽  
Tsung‐Rong Kuo ◽  
Sheng‐Chih Lin ◽  
Chia‐Shuo Hsu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Platinum Catalyst ◽  
Dynamic Structure

scholarly journals Electrochemically Induced In-Situ Generated Co(OH)2 Nanoplates to Promote the Volmer Process Toward Efficient Alkaline Hydrogen Evolution Reaction

2020 ◽  
Author(s):  
Hong Liu ◽  
Jian-Jun Wang ◽  
Li-Wen Jiang ◽  
Yuan Huang ◽  
Bing Bing Chen ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Water Electrolysis ◽  
Water Dissociation ◽  
Alkaline Water Electrolysis ◽  
Additional Water ◽  
Dissociation Step ◽  
Insight Into

<p>Hydrogen production via alkaline water electrolysis is of significant interest. However, the additional water dissociation step makes the Volmer step a relatively more sluggish kinetics and consequently leads to a slower reaction rate than that in acidic solution. Herein, we demonstrate an effective strategy that Co(OH)<sub>2</sub> can promote the Volmer process by accelerating water dissociation and enhance the electrocatalytic performance of CoP toward alkaline hydrogen evolution reaction. The Co(OH)<sub>2</sub> nanoplates are electrochemically induced in-situ generated to form a nanotree-like structure with porous CoP nanowires, endowing the hybrid electrocatalyst with superior charge transportation, more exposed active sites, and enhanced reaction kinetics. This strategy may be extended to <a></a><a>other phosphides and chalcogenides </a>and provide insight into the design and fabrication of efficient alkaline HER catalysts.</p>

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