Single‐Step Preparation of Large Area TiO 2 Photoelectrodes for Water Splitting

2020 ◽  
Vol 10 (23) ◽  
pp. 2000652 ◽  
Author(s):  
Silvia Franz ◽  
Hamed Arab ◽  
Gian Luca Chiarello ◽  
Massimiliano Bestetti ◽  
Elena Selli
Keyword(s):  
Water Splitting ◽  
Single Step ◽  
Large Area

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.

scholarly journals Large-area printing of ferroelectric surface and super-domains for efficient solar water splitting

2020 ◽  
Author(s):  
Yu Tian ◽  
Yaqing Wei ◽  
Minghui Pei ◽  
Rongrong Cao ◽  
Zhenao Gu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Electric Fields ◽  
Electronic Structures ◽  
Active Sites ◽  
Large Area ◽  
Solar Water Splitting ◽  
High Efficient ◽  
Catalytic Sites ◽  
Order Of Magnitude ◽  
Magnitude Increase

Abstract Surface electronic structures of the photoelectrodes determine the activity and efficiency of the photoelectrochemical water splitting, but the controls of their surface structures and interfacial chemical reactions remain challenging. Here, we use ferroelectric BiFeO3 as a model system to demonstrate an efficient and controllable water splitting reaction by large-area constructing the hydroxyls-bonded surface. The up-shift of band edge positions at this surface enables and enhances the interfacial holes and electrons transfer through the hydroxyl-active-sites, leading to simultaneously enhanced oxygen and hydrogen evolutions. Furthermore, printing of ferroelectric super-domains with microscale checkboard up/down electric fields separates the distribution of reduction/oxidation catalytic sites, enhancing the charge separation and giving rise to an order of magnitude increase of the photocurrent. This large-area printable ferroelectric surface and super-domains offer an alternative platform for controllable and high-efficient photocatalysis.

Single-step, large-area, variable thickness sputtered WS2 film-based field effect transistors

2020 ◽  
Vol 46 (17) ◽  
pp. 26854-26860
Author(s):  
Merve Acar ◽  
Soheil Mobtakeri ◽  
Hasan Efeoğlu ◽  
Mehmet Ertuğrul ◽  
Emre Gür
Keyword(s):  
Variable Thickness ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Single Step ◽  
Large Area

A large-area fabrication of moth-eye patterned Au/TiO2 gap-plasmon structure and its application to plasmonic solar water splitting

2019 ◽  
Vol 201 ◽  
pp. 110033 ◽  
Author(s):  
Junho Jun ◽  
Heejun Kim ◽  
Hak-Jong Choi ◽  
Tae-Won Lee ◽  
Sucheol Ju ◽  
...  
Keyword(s):  
Water Splitting ◽  
Large Area ◽  
Solar Water ◽  
Solar Water Splitting

Large area high-performance bismuth vanadate photoanode for efficient solar water splitting

2020 ◽  
Vol 8 (7) ◽  
pp. 3845-3850 ◽  
Author(s):  
Meirong Huang ◽  
Wenhai Lei ◽  
Min Wang ◽  
Shuji Zhao ◽  
Changli Li ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
High Performance ◽  
Large Scale ◽  
Photocurrent Density ◽  
Large Area ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Harsh Conditions ◽  
Density Of Water

Large-scale BiVO4 photoanodes were prepared for solar water splitting. A photocurrent density of water oxidation of ∼2.23 mA cm−2 at 1.23 VRHE and ∼0.83% conversion efficiency at 0.65 VRHE were achieved, with <4% decay after 5 h of operation under harsh conditions.

A modular device for large area integrated photoelectrochemical water-splitting as a versatile tool to evaluate photoabsorbers and catalysts

2017 ◽  
Vol 5 (10) ◽  
pp. 4818-4826 ◽  
Author(s):  
J.-P. Becker ◽  
B. Turan ◽  
V. Smirnov ◽  
K. Welter ◽  
F. Urbain ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Active Area ◽  
Stable Operation ◽  
Large Area ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Versatile Tool

We present a stand-alone integrated solar water-splitting device with an active area of 64 cm2 and a long-term stable operation. The modular setup of the device provides a versatile tool to integrate and evaluate various combinations of photoelectrodes and catalysts.

Single-step strategy for the fabrication of GaON/ZnO nanoarchitectured photoanode their experimental and computational photoelectrochemical water splitting

Nano Energy ◽  
2018 ◽  
Vol 44 ◽  
pp. 23-33 ◽  
Author(s):  
Ibrahim Khan ◽  
Ahsanulhaq Qurashi ◽  
Golibjon Berdiyorov ◽  
Naseer Iqbal ◽  
Katsushi Fuji ◽  
...  
Keyword(s):  
Water Splitting ◽  
Single Step ◽  
Photoelectrochemical Water Splitting

Low cost sponge based piezocapacitive sensors using a single step leavening agent mediated autolysis process

2018 ◽  
Vol 6 (20) ◽  
pp. 5473-5481 ◽  
Author(s):  
Chithra Parameswaran ◽  
Dipti Gupta
Keyword(s):  
Real Time ◽  
Low Cost ◽  
Single Step ◽  
Large Area ◽  
Sensing Applications ◽  
Autolysis Process

A single step, low cost, large area and shape scalable method of obtaining elastomer sponge is achieved through leavening agent autolysis with exceptional sensitivity tunability for real time sensing applications.

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