One-step solid-phase boronation to fabricate self-supported porous FeNiB/FeNi foam for efficient electrocatalytic oxygen evolution and overall water splitting

2019 ◽  
Vol 7 (33) ◽  
pp. 19554-19564 ◽  
Author(s):  
Hefeng Yuan ◽  
Shumin Wang ◽  
Xundi Gu ◽  
Bin Tang ◽  
Jinping Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Alkaline Medium ◽  
Solid Phase ◽  
Core Shell ◽  
Environment Friendly ◽  
Long Term Stability ◽  
One Step

A 3D core–shell-type FeNi@FeNiB electrocatalyst fabricated by environment-friendly solid-phase boronation exhibits remarkable catalytic activity and long-term stability for the OER in alkaline medium.

Experimental and theoretical insights into sustained water splitting with an electrodeposited nanoporous nickel hydroxide@nickel film as an electrocatalyst

2017 ◽  
Vol 5 (17) ◽  
pp. 7744-7748 ◽  
Author(s):  
Zhicai Xing ◽  
Linfeng Gan ◽  
Jin Wang ◽  
Xiurong Yang
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Nickel Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Theoretical Calculations ◽  
Nickel Film ◽  
Long Term Stability ◽  
Electrocatalytic Effects

Electrodeposited nanoporous Ni(OH)2@Ni film acts as a Janus electrocatalyst for the hydrogen evolution and oxygen evolution reaction, and overall water splitting, exhibiting superior activities and exceptional long-term stability. Theoretical calculations show that the synergistic electrocatalytic effects of Ni(OH)2 and Ni are responsible for the high activities.

scholarly journals Origin of High Efficiency and Long-Term Stability in Ionic Liquid Perovskite Photovoltaic

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-13 ◽  
Author(s):  
Lingfeng Chao ◽  
Tingting Niu ◽  
Hao Gu ◽  
Yingguo Yang ◽  
Qi Wei ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Environment Friendly ◽  
Long Term Stability ◽  
Wide Range ◽  
One Step ◽  
Amine Groups ◽  
Perovskite Photovoltaic

Environment-friendly protic amine carboxylic acid ionic liquids (ILs) as solvents is a significant breakthrough with respect to traditional highly coordinating and toxic solvents in achieving efficient and stable perovskite solar cells (PSCs) with a simple one-step air processing and without an antisolvent treatment approach. However, it remains mysterious for the improved efficiency and stability of PSCs without any passivation strategy. Here, we unambiguously demonstrate that the three functions of solvents, additive, and passivation are present for protic amine carboxylic acid ILs. We found that the ILs have the capability to dissolve a series of perovskite precursors, induce oriented crystallization, and chemically passivate the grain boundaries. This is attributed to the unique molecular structure of ILs with carbonyl and amine groups, allowing for strong interaction with perovskite precursors by forming C=O…Pb chelate bonds and N-H…I hydrogen bonds in both solution and film. This finding is generic in nature with extension to a wide range of IL-based perovskite optoelectronics.

Bismuth iron molybdenum oxide solid solution: a novel and durable electrocatalyst for overall water splitting

2020 ◽  
Vol 56 (53) ◽  
pp. 7293-7296
Author(s):  
Sakila Khatun ◽  
Poulomi Roy
Keyword(s):  
Solid Solution ◽  
Water Splitting ◽  
Alkaline Medium ◽  
Molybdenum Oxide ◽  
Term Stability ◽  
Long Term Stability ◽  
Overall Water Splitting ◽  
Oxide Solid Solution ◽  
First Time

Bismuth iron molybdenum oxide solid solution has been identified as a potential electrocatalyst for the first time. Besides its outstanding electrocatalytic performance, the material withstands highly alkaline medium, showing long-term stability.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

scholarly journals Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dingwang Huang ◽  
Lintao Li ◽  
Kang Wang ◽  
Yan Li ◽  
Kuang Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Low Cost ◽  
Solar Hydrogen ◽  
Onset Potential ◽  
Term Stability ◽  
Long Term Stability ◽  
Solar Water Splitting ◽  
Current Densities

AbstractA highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that the Cu3BiS3 film-based photocathode meets the abovementioned requirements. The Cu3BiS3-based photocathode presents a remarkable onset potential over 0.9 VRHE with excellent photoelectrochemical current densities (~7 mA/cm2 under 0 VRHE) and appreciable 10-hour long-term stability in neutral water solutions. This high onset potential of the Cu3BiS3-based photocathode directly results in a good unbiased operating photocurrent of ~1.6 mA/cm2 assisted by the BiVO4 photoanode. A tandem device of Cu3BiS3-BiVO4 with an unbiased solar-to-hydrogen conversion efficiency of 2.04% is presented. This tandem device also presents high stability over 20 hours. Ultimately, a 5 × 5 cm2 large Cu3BiS3-BiVO4 tandem device module is fabricated for standalone overall solar water splitting with a long-term stability of 60 hours.

Hierarchical Fe-Mn binary metal oxide core-shell nano-polyhedron as bifunctional electrocatalyst for efficient water splitting

2021 ◽  
Author(s):  
Yun-Wu Li ◽  
Shi-Kun Su ◽  
Cai-Zhen Yue ◽  
Jun Shu ◽  
Pengfang Zhang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Energy Crisis ◽  
Core Shell ◽  
Bifunctional Electrocatalyst ◽  
Binary Metal ◽  
Bifunctional Electrocatalysts ◽  
Binary Metal Oxide ◽  
Electrochemical Water Splitting

Electrochemical water splitting is convinced as one of the most promising solutions to combat energy crisis. The exploitation of efficient hydrogen and oxygen evolution reactions (HER/OER) bifunctional electrocatalysts is undoubtedly...

scholarly journals One-step synthesis of carbon-supported electrocatalysts

2020 ◽  
Vol 11 ◽  
pp. 1419-1431
Author(s):  
Sebastian Tigges ◽  
Nicolas Wöhrl ◽  
Ivan Radev ◽  
Ulrich Hagemann ◽  
Markus Heidelmann ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Chemical Vapor ◽  
Narrow Particle Size Distribution ◽  
Long Term Stability ◽  
Operational Lifetime ◽  
Metal Acetylacetonate ◽  
One Step ◽  
Supported Electrocatalysts ◽  
Platinum Loading

Cost-efficiency, durability, and reliability of catalysts, as well as their operational lifetime, are the main challenges in chemical energy conversion. Here, we present a novel, one-step approach for the synthesis of Pt/C hybrid material by plasma-enhanced chemical vapor deposition (PE-CVD). The platinum loading, degree of oxidation, and the very narrow particle size distribution are precisely adjusted in the Pt/C hybrid material due to the simultaneous deposition of platinum and carbon during the process. The as-synthesized Pt/C hybrid materials are promising electrocatalysts for use in fuel cell applications as they show significantly improved electrochemical long-term stability compared to the industrial standard HiSPEC 4000. The PE-CVD process is furthermore expected to be extendable to the general deposition of metal-containing carbon materials from other commercially available metal acetylacetonate precursors.

Nickel Foam Supported Co 3 O 4 @Ni 3 Se 4 Core‐Shell Nanorod Arrays with Long‐Term and Efficient Catalytic Performance for Water Splitting

ChemNanoMat ◽  
2019 ◽  
Vol 5 (6) ◽  
pp. 814-819 ◽  
Author(s):  
Ronghui Que ◽  
Gang Ji ◽  
Daoshuang Liu ◽  
Maolin Li ◽  
Sheng Liu
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Catalytic Performance ◽  
Core Shell ◽  
Nanorod Arrays
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