Insight into the Dopability of Photoanodes for an Efficient Water Splitting

2020 ◽  
Author(s):  
Ki-Yong Yoon ◽  
Juhyung Park ◽  
Hosik Lee ◽  
Ji Hui Seo ◽  
Myung-Jun Kwak ◽  
...  
Keyword(s):  
Water Splitting ◽  
Insight Into

scholarly journals Design and Demonstration of Large Scale Cu2O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7422
Author(s):  
Min-Kyu Son
Keyword(s):  
Water Splitting ◽  
Large Scale ◽  
Grid Structure ◽  
Large Area ◽  
Intrinsic Conductivity ◽  
Metal Grid ◽  
Splitting System ◽  
Insight Into ◽  
Better Than

Upscaling of photoelectrode for a practical photoelectrochemical (PEC) water splitting system is still challenging because the PEC performance of large-scale photoelectrode is significantly low, compared to the lab scale photoelectrode. In an effort to overcome this challenge, sputtered gold (Au) and copper (Cu) grid lines were introduced to improve the PEC performance of large-scale cuprous oxide (Cu2O) photocathode in this work. It was demonstrated that Cu grid lines are more effective than Au grid lines to improve the PEC performance of large-scale Cu2O photocathode because its intrinsic conductivity and quality of grid lines are better than ones containing Au grid lines. As a result, the PEC performance of a 25-cm2 scaled Cu2O photocathode with Cu grid lines was almost double than one without grid lines, resulting in an improved charge transport in the large area substrate by Cu grid lines. Finally, a 50-cm2 scaled Cu2O photocathode with Cu grid lines was tested in an outdoor condition under natural sun. This is the first outdoor PEC demonstration of large-scale Cu2O photocathode with Cu grid lines, which gives insight into the development of efficient upscaled PEC photoelectrode.

Vapor Phase Processing of α-Fe2O3 Photoelectrodes for Water Splitting: An Insight into the Structure/Property Interplay

2015 ◽  
Vol 7 (16) ◽  
pp. 8667-8676 ◽  
Author(s):  
Michael E. A Warwick ◽  
Kimmo Kaunisto ◽  
Davide Barreca ◽  
Giorgio Carraro ◽  
Alberto Gasparotto ◽  
...  
Keyword(s):  
Water Splitting ◽  
Vapor Phase ◽  
Structure Property ◽  
Insight Into

scholarly journals Mediator-assisted water oxidation by the ruthenium “blue dimer” cis,cis-[(bpy)2(H2O)RuORu(OH2)(bpy)2]4+

2008 ◽  
Vol 105 (46) ◽  
pp. 17632-17635 ◽  
Author(s):  
Javier J. Concepcion ◽  
Jonah W. Jurss ◽  
Joseph L. Templeton ◽  
Thomas J. Meyer
Keyword(s):  
Carbon Dioxide ◽  
Electron Transfer ◽  
Renewable Energy ◽  
Photosystem Ii ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxygenic Photosynthesis ◽  
Reduced Water ◽  
Insight Into ◽  
Recent Insight

Light-driven water oxidation occurs in oxygenic photosynthesis in photosystem II and provides redox equivalents directed to photosystem I, in which carbon dioxide is reduced. Water oxidation is also essential in artificial photosynthesis and solar fuel-forming reactions, such as water splitting into hydrogen and oxygen (2 H2O + 4 hν → O2 + 2 H2) or water reduction of CO2 to methanol (2 H2O + CO2 + 6 hν → CH3OH + 3/2 O2), or hydrocarbons, which could provide clean, renewable energy. The “blue ruthenium dimer,” cis,cis-[(bpy)2(H2O)RuIIIORuIII(OH2)(bpy)2]4+, was the first well characterized molecule to catalyze water oxidation. On the basis of recent insight into the mechanism, we have devised a strategy for enhancing catalytic rates by using kinetically facile electron-transfer mediators. Rate enhancements by factors of up to ≈30 have been obtained, and preliminary electrochemical experiments have demonstrated that mediator-assisted electrocatalytic water oxidation is also attainable.

New insight into the roles of oxygen vacancies in hematite for solar water splitting

2017 ◽  
Vol 19 (2) ◽  
pp. 1074-1082 ◽  
Author(s):  
Xin Zhao ◽  
Jianyong Feng ◽  
Shi Chen ◽  
Yizhong Huang ◽  
Tze Chien Sum ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Oxygen Vacancies ◽  
Active Surface ◽  
Transfer Efficiency ◽  
Surface Species ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Insight Into

Oxygen vacancies have different impacts on the charge transfer efficiency of pristine and Ti-doped hematite through active surface species.

Insight into the charge transport correlation in Aux clusters and graphene quantum dots deposited on TiO2 nanotubes for photoelectrochemical oxygen evolution

2018 ◽  
Vol 6 (24) ◽  
pp. 11154-11162 ◽  
Author(s):  
Zhiping Zeng ◽  
Yu-Bing Li ◽  
Shufen Chen ◽  
Peng Chen ◽  
Fang-Xing Xiao
Keyword(s):  
Quantum Dots ◽  
Charge Transport ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Tio2 Nanotubes ◽  
Graphene Quantum Dots ◽  
Gold Nanoclusters ◽  
Intrinsic Correlation ◽  
Induced Charge ◽  
Insight Into

The intrinsic correlation of gold nanoclusters with graphene quantum dots in terms of photo-induced charge transport for photoelectrochemical water splitting was revealed.

Insight into Charge Separation in WO3/BiVO4 Heterojunction for Solar Water Splitting

2017 ◽  
Vol 9 (23) ◽  
pp. 19780-19790 ◽  
Author(s):  
Sang Youn Chae ◽  
Chang Soo Lee ◽  
Hyejin Jung ◽  
Oh-Shim Joo ◽  
Byoung Koun Min ◽  
...  
Keyword(s):  
Water Splitting ◽  
Charge Separation ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Insight Into
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