scholarly journals Water Splitting: Boosting Water Dissociation Kinetics on Pt–Ni Nanowires by N‐Induced Orbital Tuning (Adv. Mater. 16/2019)

2019 ◽  
Vol 31 (16) ◽  
pp. 1970116
Author(s):  
Yufang Xie ◽  
Jinyan Cai ◽  
Yishang Wu ◽  
Yipeng Zang ◽  
Xusheng Zheng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Dissociation ◽  
Dissociation Kinetics ◽  
Orbital Tuning

Boosting Water Dissociation Kinetics on Pt–Ni Nanowires by N‐Induced Orbital Tuning

2019 ◽  
Vol 31 (16) ◽  
pp. 1807780 ◽  
Author(s):  
Yufang Xie ◽  
Jinyan Cai ◽  
Yishang Wu ◽  
Yipeng Zang ◽  
Xusheng Zheng ◽  
...  
Keyword(s):  
Water Dissociation ◽  
Dissociation Kinetics ◽  
Orbital Tuning

Accelerating water dissociation kinetics of Ni3N by tuning interfacial orbital coupling

Nano Research ◽  
2021 ◽  
Author(s):  
Yishang Wu ◽  
Yufang Xie ◽  
Shuwen Niu ◽  
Yipeng Zang ◽  
Jinyan Cai ◽  
...  
Keyword(s):  
Water Dissociation ◽  
Dissociation Kinetics ◽  
Kinetics Of

scholarly journals Electrodeposition of Pt-Decorated Ni(OH)2/CeO2 Hybrid as Superior Bifunctional Electrocatalyst for Water Splitting

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Huanhuan Liu ◽  
Zhenhua Yan ◽  
Xiang Chen ◽  
Jinhan Li ◽  
Le Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Cell Voltage ◽  
Water Electrolysis ◽  
Active Species ◽  
Water Dissociation ◽  
Electronic Interaction ◽  
Bifunctional Electrocatalyst ◽  
Highly Active ◽  
A Cell ◽  
Promising Application

The facile synthesis of highly active and stable bifunctional electrocatalysts to catalyze water splitting is attractive but challenging. Herein, we report the electrodeposition of Pt-decorated Ni(OH)2/CeO2 (PNC) hybrid as an efficient and robust bifunctional electrocatalyst. The graphite-supported PNC catalyst delivers superior hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities over the benchmark Pt/C and RuO2, respectively. For overall water electrolysis, the PNC hybrid only requires a cell voltage of 1.45 V at 10 mA cm−2 and sustains over 85 h at 1000 mA cm−2. The remarkable HER/OER performances are attributed to the superhydrophilicity and multiple effects of PNC, in which Ni(OH)2 and CeO2 accelerate HER on Pt due to promoted water dissociation and strong electronic interaction, while the electron-pulling Ce cations facilitate the generation of high-valence Ni OER-active species. These results suggest the promising application of PNC for H2 production from water electrolysis.

Manipulating the water dissociation kinetics of Ni3N nanosheets via in situ interfacial engineering

2019 ◽  
Vol 7 (18) ◽  
pp. 10924-10929 ◽  
Author(s):  
Shuwen Niu ◽  
Yanyan Fang ◽  
Jianbin Zhou ◽  
Jinyan Cai ◽  
Yipeng Zang ◽  
...  
Keyword(s):  
Water Dissociation ◽  
Dissociation Kinetics ◽  
Interfacial Engineering ◽  
Kinetics Of

The sluggish water dissociation kinetics of Ni3N is significantly accelerated by in situ interfacial engineering. Owing to the unique synergy between Ni3N and MoO2, Ni3N/MoO2 displays exceptional alkaline HER activity.

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.

Efficient alkaline hydrogen evolution on atomically dispersed Ni–Nx Species anchored porous carbon with embedded Ni nanoparticles by accelerating water dissociation kinetics

2019 ◽  
Vol 12 (1) ◽  
pp. 149-156 ◽  
Author(s):  
Chaojun Lei ◽  
Yu Wang ◽  
Yang Hou ◽  
Pan Liu ◽  
Jian Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Porous Carbon ◽  
Carbon Matrix ◽  
Water Dissociation ◽  
Ni Nanoparticles ◽  
Dissociation Kinetics ◽  
Highly Efficient ◽  
Alkaline Conditions

Atomically dispersed Ni–Nx species anchored porous carbon matrix with embedded Ni nanoparticles was synthesized for highly efficient hydrogen evolution in alkaline conditions.

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.

Manganese oxide dissociation kinetics for the Mn2O3 thermochemical water-splitting cycle. Part 2: CFD model

2010 ◽  
Vol 65 (15) ◽  
pp. 4397-4410 ◽  
Author(s):  
Todd M. Francis ◽  
Christopher Perkins ◽  
Alan W. Weimer
Keyword(s):  
Manganese Oxide ◽  
Water Splitting ◽  
Cfd Model ◽  
Dissociation Kinetics

scholarly journals Shining Light on Anion-Mixed Nanocatalysts for Efficient Water Electrolysis: Fundamentals, Progress, and Perspectives

2022 ◽  
Vol 14 (1) ◽  
Author(s):  
Yaoda Liu ◽  
Paranthaman Vijayakumar ◽  
Qianyi Liu ◽  
Thangavel Sakthivel ◽  
Fuyi Chen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Water Electrolysis ◽  
High Energy ◽  
Transition Metal Compounds ◽  
Water Dissociation ◽  
Future Perspectives ◽  
Metal Compounds ◽  
Mixed Water ◽  
Mixed Transition

Highlights This review introduces recent advances of various anion-mixed transition metal compounds (e.g., nitrides, halides, phosphides, chalcogenides, (oxy)hydroxides, and borides) for efficient water electrolysis applications in detail. The challenges and future perspectives are proposed and analyzed for the anion-mixed water dissociation catalysts, including polyanion-mixed and metal-free catalyst, progressive synthesis strategies, advanced in situ characterizations, and atomic level structure–activity relationship. Abstract Hydrogen with high energy density and zero carbon emission is widely acknowledged as the most promising candidate toward world's carbon neutrality and future sustainable eco-society. Water-splitting is a constructive technology for unpolluted and high-purity H2 production, and a series of non-precious electrocatalysts have been developed over the past decade. To further improve the catalytic activities, metal doping is always adopted to modulate the 3d-electronic configuration and electron-donating/accepting (e-DA) properties, while for anion doping, the electronegativity variations among different non-metal elements would also bring some potential in the modulations of e-DA and metal valence for tuning the performances. In this review, we summarize the recent developments of the many different anion-mixed transition metal compounds (e.g., nitrides, halides, phosphides, chalcogenides, oxyhydroxides, and borides/borates) for efficient water electrolysis applications. First, we have introduced the general information of water-splitting and the description of anion-mixed electrocatalysts and highlighted their complementary functions of mixed anions. Furthermore, some latest advances of anion-mixed compounds are also categorized for hydrogen and oxygen evolution electrocatalysis. The rationales behind their enhanced electrochemical performances are discussed. Last but not least, the challenges and future perspectives are briefly proposed for the anion-mixed water dissociation catalysts.

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