Promoting water dissociation performance by borinic acid for the strong-acid/base-free hydrogen evolution reaction

2019 ◽  
Vol 55 (66) ◽  
pp. 9821-9824 ◽  
Author(s):  
Xin-Hu Lv ◽  
Xue-Yuan Wang ◽  
Yan Zhou ◽  
Hai Xu ◽  
Wen-Ming Wan
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Strong Acid ◽  
Proton Donor ◽  
Water Dissociation ◽  
Acid Base ◽  
Free Hydrogen ◽  
Borinic Acid

Borinic acid is reported as a new proton donor with promoted water dissociation performance for the strong-acid/base-free hydrogen evolution reaction.

Promoted Alkaline Hydrogen Evolution by N-doped Pt-Ru Single Atoms Alloy

2021 ◽  
Author(s):  
Mi Luo ◽  
Jinyan Cai ◽  
Jiasui Zou ◽  
Zheng Jiang ◽  
Gongming Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Surface Adsorption ◽  
Adsorption Behavior ◽  
Water Dissociation ◽  
Desorption Kinetics ◽  
Catalytic Surface ◽  
Single Atoms

Since water dissociation and H desorption kinetics essentially determine the performance of alkaline hydrogen evolution reaction (HER), rationally regulating surface adsorption behavior to achieve superior catalytic surface is always challenging...

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>

scholarly journals Boosting alkaline hydrogen evolution: the dominating role of interior modification in surface electrocatalysis

2020 ◽  
Vol 13 (9) ◽  
pp. 3110-3118 ◽  
Author(s):  
Zhao Li ◽  
Wenhan Niu ◽  
Zhenzhong Yang ◽  
Abdelkader Kara ◽  
Qi Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Water Dissociation ◽  
Alkaline Solutions ◽  
Great Promise ◽  
Hydrogen Fuel ◽  
Practical Utilization

The alkaline hydrogen evolution reaction (A-HER) holds great promise for clean hydrogen fuel generation but its practical utilization is severely hindered by the sluggish kinetics for water dissociation in alkaline solutions.

Tungsten-doped Ni–Co phosphides with multiple catalytic sites as efficient electrocatalysts for overall water splitting

2019 ◽  
Vol 7 (28) ◽  
pp. 16859-16866 ◽  
Author(s):  
Shan-Shan Lu ◽  
Li-Ming Zhang ◽  
Yi-Wen Dong ◽  
Jia-Qi Zhang ◽  
Xin-Tong Yan ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Water Dissociation ◽  
Overall Water Splitting ◽  
Catalytic Sites ◽  
Additional Water ◽  
Dissociation Step

The design of electrocatalysts including precious and nonprecious metals for the hydrogen evolution reaction (HER) in alkaline media remains challenging due to the sluggish reaction kinetics caused by the additional water dissociation step.

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>

Graphene-MoS2 vertically anchored on an MXene-derived accordion-like TiO2/C skeleton: an ultrastable HER catalyst

2020 ◽  
Vol 8 (28) ◽  
pp. 14223-14233 ◽  
Author(s):  
Jian Li ◽  
Zi Wen ◽  
Zhen Xin Hui ◽  
Zhi Wen Chen ◽  
Chun Cheng Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Strong Acid ◽  
Electrochemical Stability ◽  
Acid Electrolyte ◽  
First Time

An MXene-derived accordion-like TiO2/C substrate was fabricated for the first time and the as-fabricated rGO-MoS2/Acc-TiO2/C catalyst exhibited ultrahigh electrochemical stability in a strong acid electrolyte for the hydrogen evolution reaction.

In situ formed oxy/hydroxide antennas accelerating the water dissociation kinetics on a Co@N-doped carbon core–shell assembly for hydrogen production in alkaline solution

2019 ◽  
Vol 48 (31) ◽  
pp. 11927-11933 ◽  
Author(s):  
Tao Yang ◽  
Lang Pei ◽  
Shicheng Yan ◽  
Zhentao Yu ◽  
Tao Yu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Solution ◽  
Water Dissociation ◽  
Core Shell ◽  
Dissociation Kinetics ◽  
Alkaline Electrolytes ◽  
Carbon Core

The hydrogen evolution reaction (HER) in alkaline electrolytes is restricted severely by sluggish water dissociation in the Volmer step.

scholarly journals RuxSe@MoS2 hybrid as a highly efficient electrocatalyst toward hydrogen evolution reaction

RSC Advances ◽  
2019 ◽  
Vol 9 (24) ◽  
pp. 13486-13493 ◽  
Author(s):  
Qi Chen ◽  
Kefeng Wang ◽  
Jingjing Qin ◽  
Songzhu Wang ◽  
Wei Wei ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Hydrogen Adsorption ◽  
Water Dissociation ◽  
Highly Efficient

The bifunctionality mechanism of RuxSe@MoS2 greatly enhances the alkaline HER performance, in which Ru promotes water dissociation and the nearby Se atoms, unsaturated Mo and/or S atoms act as active sites for the intermediate hydrogen adsorption.

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