Low-cost and Multi-level Structured NiFeMn Alloy@NiFeMn Oxyhydroxide Electrocatalysts for Highly-efficient Overall Water Splitting

2021 ◽  
Author(s):  
Zeyu Ge ◽  
Fei Wang ◽  
Junji Guo ◽  
Jungang Ma ◽  
Chunyan Yu ◽  
...  
Keyword(s):  
Energy Saving ◽  
High Activity ◽  
Water Splitting ◽  
Electrochemical Deposition ◽  
Large Scale ◽  
Low Cost ◽  
Industrial Applications ◽  
Significant Challenge ◽  
Overall Water Splitting ◽  
Multi Level

Fabricating energy-saving, inexpensive and high activity electrocatalysts for overall water splitting has always been a significant challenge. Electrochemical deposition is considered as a promising method for large-scale industrial applications, but...

Al-doped nickel sulfide nanosheet arrays as highly efficient bifunctional electrocatalysts for overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (47) ◽  
pp. 24244-24250
Author(s):  
Wenjun He ◽  
Fangqing Wang ◽  
Dongbo Jia ◽  
Ying Li ◽  
Limin Liang ◽  
...  
Keyword(s):  
High Activity ◽  
Water Splitting ◽  
Precious Metal ◽  
Nickel Sulfide ◽  
Low Cost ◽  
Water Electrolysis ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Nanosheet Arrays ◽  
Production Of Hydrogen

The development of low-cost, high-activity, durable non-precious metal bifunctional electrocatalysts is of great importance in the production of hydrogen by water electrolysis.

Interfacial engineering of Mo2C–Mo3C2 heteronanowires for high performance hydrogen evolution reactions

Nanoscale ◽  
2019 ◽  
Vol 11 (48) ◽  
pp. 23318-23329 ◽  
Author(s):  
Lina Jia ◽  
Chen Li ◽  
Yaru Zhao ◽  
Bitao Liu ◽  
Shixiu Cao ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Precious Metal ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Critical Importance ◽  
Interfacial Engineering ◽  
Hydrogen Evolution Reactions

Non-precious metal-based electrocatalysts with high activity and stability for efficient hydrogen evolution reactions are of critical importance for low-cost and large-scale water splitting.

scholarly journals Photocatalytic Overall Water Splitting by SrTiO3 with Surface Oxygen Vacancies

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2572
Author(s):  
Yanfei Fan ◽  
Yan Liu ◽  
Hongyu Cui ◽  
Wen Wang ◽  
Qiaoyan Shang ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Oxygen Vacancies ◽  
Low Cost ◽  
Energy Levels ◽  
Light Response ◽  
Hydrogen Energy ◽  
Surface Oxygen ◽  
Carbon Reduction ◽  
Overall Water Splitting

Strontium Titanate has a typical perovskite structure with advantages of low cost and photochemical stability. However, the wide bandgap and rapid recombination of electrons and holes limited its application in photocatalysis. In this work, a SrTiO3 material with surface oxygen vacancies was synthesized via carbon reduction under a high temperature. It was successfully applied for photocatalytic overall water splitting to produce clean hydrogen energy under visible light irradiation without any sacrificial reagent for the first time. The photocatalytic overall water splitting ability of the as-prepared SrTiO3-C950 is attributed to the surface oxygen vacancies that can make suitable energy levels for visible light response, improving the separation and transfer efficiency of photogenerated carriers.

Co/Cu-modified NiO film grown on nickel foam as a highly active and stable electrocatalyst for overall water splitting

2020 ◽  
Vol 49 (6) ◽  
pp. 1776-1784 ◽  
Author(s):  
Zhengang Guo ◽  
Xiaofeng Wang ◽  
Yangqin Gao ◽  
Zhifeng Liu
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Low Cost ◽  
Overall Water Splitting ◽  
Highly Active ◽  
Development And Utilization

The development and utilization of low-cost and efficient electrocatalysts for overall water splitting is of great significance for future energy supplies.

Low friction bio-inspired polydopamine/polytetrafluoroethylene coating performance in hydrodynamic bearings

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Marius Rutkevičius ◽  
Jimmy Dong ◽  
Darren Tremelling ◽  
Julia Viertel ◽  
Samuel Beckford
Keyword(s):  
Large Scale ◽  
Journal Bearing ◽  
Low Cost ◽  
Optical Microscope ◽  
Polymer Coatings ◽  
Industrial Applications ◽  
Low Friction ◽  
Coating Performance ◽  
Content Type ◽  
Coating Delamination

Purpose Low friction polymer coatings able to withstand high loadings and many years of continuous operation are difficult to formulate at low cost, but could find many applications in industry. This study aims to analyze and compare friction and wear performance of novel polydopamine/polytetrafluoroethylene (PDA/PTFE) and traditional tin Babbitt coatings applied to an industrial journal bearing. Design/methodology/approach This paper tested PTFE based coating, co-deposited with PDA, a biopolymer allowing sea mussels to adhere to ocean rocks. This coating was deposited on flat steel substrates and on a curved cast iron hydrodynamic journal bearing surface. The flat substrates were analyzed with a tribometer and an optical microscope, while the coated bearing liners were tested in an industrial laboratory setting at different speeds and different radial loads. Findings PDA/PTFE coating showed 2-3 times lower friction compared to traditional tin Babbitt for flat substrates, but higher friction in the bearing liners. PDA/PTFE also showed considerable wear through coating delamination and abrasion in the bearing liners. Research limitations/implications Five future modifications to mitigate coating flaws are provided, which include modifications to coating thickness and its surface finish. Originality/value While the novel coating showed excellent results on flat substrates, coating performance in a large scale bearing was found to be poor. This study shows that coating preparation needs to be improved to avoid frictional losses and unwanted damage to bearings. We provide several routes that could improve coating performance in industrial applications.

3D Hierarchical Network Derived from 2D Fe-doped NiSe Nanosheets/Carbon Nanotubes with Enhanced OER Performance for Overall Water Splitting

2022 ◽  
Author(s):  
Kai Chang ◽  
Duy Thanh Tran ◽  
Jingqiang Wang ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Carbon Nanotubes ◽  
High Activity ◽  
Water Splitting ◽  
Electrode Material ◽  
Hydrogen Energy ◽  
Hierarchical Network ◽  
Overall Water Splitting ◽  
Earth Abundant

Designing an earth-abundant electrode material with high activity and durability is a major challenge for water splitting to produce clean and green hydrogen energy. In this study, we reported a...

scholarly journals Nickel foam and stainless steel mesh as electrocatalysts for hydrogen evolution reaction, oxygen evolution reaction and overall water splitting in alkaline media

RSC Advances ◽  
2019 ◽  
Vol 9 (54) ◽  
pp. 31563-31571 ◽  
Author(s):  
Xiaoyan Hu ◽  
Xuemei Tian ◽  
Ying-Wu Lin ◽  
Zhonghua Wang
Keyword(s):  
Stainless Steel ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
Low Cost ◽  
Alkaline Media ◽  
Stainless Steel Mesh ◽  
Steel Mesh ◽  
Overall Water Splitting

Efficient electrocatalytic overall water splitting is achieved with commercially-available and low-cost nickel foam and stainless steel mesh as cathode and anode electrodes.

Fabrication of practical catalytic electrodes using insulating and eco-friendly substrates for overall water splitting

2020 ◽  
Vol 13 (1) ◽  
pp. 102-110 ◽  
Author(s):  
Weiju Hao ◽  
Renbing Wu ◽  
Hao Huang ◽  
Xin Ou ◽  
Lincai Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
Low Cost ◽  
Light Weight ◽  
Overall Water Splitting ◽  
Insulating Substrates

A family of catalytic electrodes fabricated by insulating substrates of paper, cloth and sponge which bring dramatic advantages of high performance, low cost, light weight, eco-friendliness, flexibility, and simple fabrication, were developed.

scholarly journals Non-Precious Electrodes for Practical Alkaline Water Electrolysis

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1336 ◽  
Author(s):  
Alejandro N. Colli ◽  
Hubert H. Girault ◽  
Alberto Battistel
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Water Electrolysis ◽  
Industrial Applications ◽  
Alkaline Water Electrolysis ◽  
Stainless Steel 316L ◽  
Experimental Conditions ◽  
Alkaline Water ◽  
Cell Components

Water electrolysis is a promising approach to hydrogen production from renewable energy sources. Alkaline water electrolyzers allow using non-noble and low-cost materials. An analysis of common assumptions and experimental conditions (low concentrations, low temperature, low current densities, and short-term experiments) found in the literature is reported. The steps to estimate the reaction overpotentials for hydrogen and oxygen reactions are reported and discussed. The results of some of the most investigated electrocatalysts, namely from the iron group elements (iron, nickel, and cobalt) and chromium are reported. Past findings and recent progress in the development of efficient anode and cathode materials appropriate for large-scale water electrolysis are presented. The experimental work is done involving the direct-current electrolysis of highly concentrated potassium hydroxide solutions at temperatures between 30 and 100 °C, which are closer to industrial applications than what is usually found in literature. Stable cell components and a good performance was achieved using Raney nickel as a cathode and stainless steel 316L as an anode by means of a monopolar cell at 75 °C, which ran for one month at 300 mA cm−2. Finally, the proposed catalysts showed a total kinetic overpotential of about 550 mV at 75 °C and 1 A cm−2.

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