scholarly journals Topochemical Transformation of Two-Dimensional VSe2 into Metallic Nonlayered VO2 for Water Splitting Reactions in Acidic and Alkaline Media

ACS Nano ◽  
2021 ◽  
Author(s):  
Leyla Najafi ◽  
Reinier Oropesa-Nuñez ◽  
Sebastiano Bellani ◽  
Beatriz Martín-García ◽  
Lea Pasquale ◽  
...  
Keyword(s):  
Water Splitting ◽  
Alkaline Media ◽  
Two Dimensional ◽  
Acidic And Alkaline Media

scholarly journals Fe(III) Ions-Assisted Aniline Polymerization Strategy to Nitrogen-Doped Carbon-Supported Bimetallic CoFeP Nanospheres as Efficient Bifunctional Electrocatalysts toward Overall Water Splitting

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1473
Author(s):  
Changhao Zhao ◽  
Fen Wei ◽  
Haolin Lv ◽  
Dengke Zhao ◽  
Nan Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Alkaline Media ◽  
Alkaline Electrolyte ◽  
Nitrogen Doped ◽  
Overall Water Splitting ◽  
Electrochemical Water Splitting ◽  
Acidic And Alkaline Media ◽  
Aniline Polymerization

It remains an urgent demand and challenging task to design and fabricate efficient, stable, and inexpensive catalysts toward sustainable electrochemical water splitting for hydrogen production. Herein, we explored the use of Fe(III) ion-assisted aniline polymerization strategy to embed bimetallic CoFeP nanospheres into the nitrogen-doped porous carbon framework (referred CoFeP-NC). The as-prepared CoFeP-NC possesses excellent hydrogen evolution reaction (HER) performance with the small overpotential (η10) of 81 mV and 173 mV generated at a current density of 10 mA cm−2 in acidic and alkaline media, respectively. Additionally, it can also efficiently catalyze water oxidation (OER), which shows an ideal overpotential (η10) of 283 mV in alkaline electrolyte (pH = 14). The remarkable catalytic property of CoFeP-NC mainly stems from the strong synergetic effects of CoFeP nanospheres and carbon network. On the one hand, the interaction between the two can make better contact between the electrolyte and the catalyst, thereby providing a large number of available active sites. On the other hand, it can also form a network to offer better durability and electrical conductivity (8.64 × 10−1 S cm−1). This work demonstrates an efficient method to fabricate non-noble electrocatalyst towards overall water splitting, with great application prospect.

Well-aligned metal–organic framework array-derived CoS2 nanosheets toward robust electrochemical water splitting

2018 ◽  
Vol 2 (9) ◽  
pp. 1732-1738 ◽  
Author(s):  
Na Yao ◽  
Tan Tan ◽  
Fulin Yang ◽  
Gongzhen Cheng ◽  
Wei Luo
Keyword(s):  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Alkaline Media ◽  
Carbon Cloth ◽  
Two Dimensional ◽  
Metal Organic ◽  
Hierarchical Architectures ◽  
Electrochemical Water Splitting

Highly open three-dimensional (3D) hierarchical architectures composed of two-dimensional (2D) CoS2 nanosheets grown on carbon cloth (CoS2 NS/CC) have been synthesized by vulcanizing well-aligned MOF-array precursors and further used as superior bifunctional electrocatalysts toward the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and overall water splitting under alkaline media.

Hierarchical superhydrophilic/superaerophobic CoMnP/Ni2P nanosheets-based microplates arrays for enhanced overall water splitting

2021 ◽  
Author(s):  
Mengzhao Liu ◽  
Zhe Sun ◽  
Shiyan Li ◽  
Xiaowa Nie ◽  
Yuefeng Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
Water Electrolysis ◽  
Alkaline Media ◽  
Industrial Water ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Acidic And Alkaline Media

The development of efficient and stable non-noble metal bifunctional electrocatalysts for overall water splitting in acidic and alkaline media is highly desirable for industrial water electrolysis, but remains a profound...

Homologous metal-free electrocatalysts grown on three-dimensional carbon networks for overall water splitting in acidic and alkaline media

2016 ◽  
Vol 4 (33) ◽  
pp. 12878-12883 ◽  
Author(s):  
Zheng Peng ◽  
Siwei Yang ◽  
Dingsi Jia ◽  
Peimei Da ◽  
Peng He ◽  
...  
Keyword(s):  
Water Splitting ◽  
Three Dimensional ◽  
Alkaline Media ◽  
Metal Free ◽  
Overall Water Splitting ◽  
Carbon Networks ◽  
Acidic And Alkaline Media

Homologous metal-free electrocatalysts grown on three-dimensional carbon networks are integrated for overall water splitting in acidic and alkaline media.

Applications of two dimensional material-MXene for proton exchange membrane fuel cells (PEMFCs) and water electrolysis

2020 ◽  
Vol 16 ◽  
Author(s):  
Chanchan Fan ◽  
Peng Zhang ◽  
Ranran Wang ◽  
Yezhu Xu ◽  
Xingrui Sun ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Splitting ◽  
Proton Exchange Membrane ◽  
Layer Structure ◽  
Metal Layer ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Two Dimensional ◽  
Max Phases ◽  
Early Transition Metal

: A new kind of two-dimensional (2D) materials MXene (early transition metal carbides, nitrides and carbonitrides) is obtained by selective etching the A element from the MAX phases. MXene exhibits both the metallic conductivity and the hydrophilic nature due to its metal layer structure and hydroxyl or oxygen terminated surfaces. This review provides an overview of the MXene used in the electrolytes and electrodes for the fuel cells and water splitting. MXene with functional groups termination could construct ion channels that significantly benefits to the ion conductivity through the electrolyte. The metal supported by MXene interaction offers electronic, compositional, and geometric effects that could enhance the catalytic activity and stability. MXene have already shown promising performance for fuel cells and water electrolysis. Herein, the etching and intercalation methods of MXene in recent years are summarized. The applications of MXene for fuel cells electrolyte, catalyst and water splitting catalyst are revealed to provide more brief idea for MXene used as new energy materials.

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