Unifying the Hydrogen Evolution and Oxidation Reactions Kinetics in Base by Identifying the Catalytic Roles of Hydroxyl-Water-Cation Adducts

2019 ◽  
Vol 141 (7) ◽  
pp. 3232-3239 ◽  
Author(s):  
Ershuai Liu ◽  
Jingkun Li ◽  
Li Jiao ◽  
Huong Thi Thanh Doan ◽  
Zeyan Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxidation Reactions

scholarly journals Nitrogen-plasma treated hafnium oxyhydroxide as an efficient acid-stable electrocatalyst for hydrogen evolution and oxidation reactions

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Xiaofang Yang ◽  
Fang Zhao ◽  
Yao-Wen Yeh ◽  
Rachel S. Selinsky ◽  
Zhu Chen ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Nitrogen Plasma ◽  
Oxidation Reactions ◽  
Acid Stable

High Performance Sn@Pt/C and Sn@Pt/NG (C= Vulcan, NG= N-doped graphene) Core-Shell Nanostructures for the Hydrogen Evolution and Oxidation Reactions in Acid Media

2020 ◽  
Vol MA2020-01 (37) ◽  
pp. 1563-1563
Author(s):  
G. Hernández-Vázquez ◽  
S. Dessources ◽  
Ivonne Liliana Alonso-Lemus ◽  
Beatriz Escobar-Morales ◽  
F.J. Rodríguez-Varela
Keyword(s):  
Hydrogen Evolution ◽  
High Performance ◽  
Core Shell ◽  
Oxidation Reactions ◽  
Acid Media ◽  
Shell Nanostructures ◽  
Doped Graphene

Oxygen reduction and hydrogen evolution–oxidation reactions on Cu(hkl) surfaces

2000 ◽  
Vol 480 (1-2) ◽  
pp. 219-224 ◽  
Author(s):  
G Brisard ◽  
N Bertrand ◽  
P.N Ross ◽  
N.M Marković
Keyword(s):  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Oxidation Reactions

Unifying the Alkaline Hydrogen Evolution/oxidation Reactions Kinetics by Identifying the Roles of Hydroxyl-Water-Cation Adducts

2018 ◽  
Author(s):  
Ershuai Liu ◽  
Jingkun Li ◽  
Li Jiao ◽  
Huong Thi Thanh Doan ◽  
Zeyan Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Alkali Metal Cation ◽  
Practical Significance ◽  
Oxidation Reactions ◽  
Acid Base ◽  
Bifunctional Mechanism ◽  
Bulk Forming ◽  
Layer Region ◽  
Soft Acid ◽  
Hsab Theory

Despite the fundamental and practical significance of the hydrogen evolution and oxidation reactions (HER/HOR), their kinetics in base remain unclear. Herein, we show that the alkaline HER/HOR kinetics can be unified by the catalytic roles of the adsorbed hydroxyl (OH<sub>ad</sub>)-water-alkali metal cation (AM<sup>+</sup>) adducts, on the basis of the observations that enriching the OH<sub>ad</sub> abundance via surface Ni benefits the HER/HOR; increasing the AM<sup>+</sup> concentration only promotes the HER while varying the identity of AM<sup>+</sup> affects both HER/HOR. The presence of OH<sub>ad</sub>-(H<sub>2</sub>O)<sub>x</sub>-AM<sup>+</sup> in the double layer region facilitates the OH<sub>ad</sub> removal into the bulk forming OH<sup>-</sup>-(H<sub>2</sub>O)<sub>x</sub>-AM<sup>+</sup> <i>as per</i> the hard-soft acid-base (HSAB) theory, thereby selectively promoting the HER. It can be detrimental to the HOR <i>as per</i> the bifunctional mechanism as the AM<sup>+</sup> destabilizes the OH<sub>ad</sub>, which is further supported by the CO oxidation results. This new notion may be important for alkaline electrochemistry.

scholarly journals Current understandings of the sluggish kinetics of the hydrogen evolution and oxidation reactions in base

2018 ◽  
Vol 12 ◽  
pp. 209-217 ◽  
Author(s):  
Qingying Jia ◽  
Ershuai Liu ◽  
Li Jiao ◽  
Jingkun Li ◽  
Sanjeev Mukerjee
Keyword(s):  
Hydrogen Evolution ◽  
Oxidation Reactions ◽  
Kinetics Of
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