An Integrating Photoanode of WO3/Fe2O3 Heterojunction Decorated with NiFe-LDH to Improve PEC Water Splitting Efficiency

2018 ◽  
Vol 6 (10) ◽  
pp. 12906-12913 ◽  
Author(s):  
Shouli Bai ◽  
Xiaojun Yang ◽  
Chengyao Liu ◽  
Xu Xiang ◽  
Ruixian Luo ◽  
...  
Keyword(s):  
Water Splitting ◽  
Pec Water Splitting

Hollow anisotropic semiconductor nanoprisms with highly crystalline frameworks for high-efficiency photoelectrochemical water splitting

2019 ◽  
Vol 7 (14) ◽  
pp. 8061-8072 ◽  
Author(s):  
Erhuan Zhang ◽  
Jia Liu ◽  
Muwei Ji ◽  
Hongzhi Wang ◽  
Xiaodong Wan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Special Interest ◽  
High Efficiency ◽  
Semiconductor Nanostructures ◽  
Photoelectrochemical Water Splitting ◽  
Anisotropic Semiconductor ◽  
Structure Morphology ◽  
Tunable Structure ◽  
Pec Water Splitting

Construction of hollow anisotropic semiconductor nanostructures that possess excellent crystallinity, flexibly tunable structure/morphology and aqueous dispersity is of special interest for photoelectrochemical (PEC) water splitting

scholarly journals Ni/Si-Codoped TiO2 Nanostructure Photoanode for Enhanced Photoelectrochemical Water Splitting

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4102 ◽  
Author(s):  
Ting Li ◽  
Dongyan Ding
Keyword(s):  
Water Splitting ◽  
Annealing Temperature ◽  
Photocurrent Density ◽  
Electrochemical Anodization ◽  
Codoped Tio2 ◽  
Lower Charge ◽  
Si Doped ◽  
Tio2 Nanostructures ◽  
Tio2 Photoanode ◽  
Pec Water Splitting

We synthesized Ni/Si-codoped TiO2 nanostructures for photoelectrochemical (PEC) water splitting, by electrochemical anodization of Ti-1Ni-5Si alloy foils in ethylene glycol/glycerol solutions containing a small amount of water. The effects of annealing temperature on PEC properties of Ni/Si-codoped TiO2 photoanode were investigated. We found that the Ni/Si-codoped TiO2 photoanode annealed at 700 °C had an anatase-rutile mixed phase and exhibited the highest photocurrent density of 1.15 mA/cm2 at 0 V (vs. Ag/AgCl), corresponding to a photoconversion efficiency of 0.70%, which was superior to Ni-doped and Si-doped TiO2. This improvement in PEC water splitting could be attributed to the extended light absorption, faster charge transfer, possibly lower charge recombination, and longer lifetime.

Wide-Bandgap Cuga(S,Se)2 As Top Cell Photocathodes for Tandem Water Splitting Devices

2018 ◽  
Vol MA2018-01 (31) ◽  
pp. 1929-1929
Author(s):  
Alexander D DeAngelis ◽  
Kimberly Horsley ◽  
Nicolas Gaillard
Keyword(s):  
Water Splitting ◽  
Quantum Efficiency ◽  
Tin Oxide ◽  
Optical Transmittance ◽  
Wide Bandgap ◽  
Optoelectronic Properties ◽  
Low Bandgap ◽  
Synthesis Approach ◽  
Specific Synthesis ◽  
Pec Water Splitting

Although several wide-bandgap (1.6-2.0 eV) chalcopyrites (e.g. CuGaSe2, Cu(In,Ga)S2, Cu(In,Al)Se2, (Ag,Cu)GaSe2) have been thus far studied as top cell absorbers for photoelectrochemical (PEC) water splitting tandem devices, CuGa(S,Se)2 is a wide-Eg chalcopyrite that has not yet received any attention in this regard. In this communication, we report on the performance of wide-bandgap chalcopyrite CuGa(S,Se)2 photocathodes as a top cell for PEC tandem water splitting. To be able to assess the PEC performance of CuGa(S,Se)2 as well as its optical transmittance, transparent conductive fluorinated tin oxide (FTO) substrates were used as back contacts. Through our research, we found that synthesizing CuGa(S,Se)2 films through sulfurization of a CuGaSe2 precursor would degrade the optoelectronic properties of the FTO substrate. As such, a specific synthesis approach was developed to circumvent this problem and successfully fabricate functioning CuGa(S,Se)2 PEC photocathodes on FTO. We present the PEC performance of our CuGa(S,Se)2 photocathodes (JSAT≈10 mA/cm2) as well as measurements relevant to its performance as a top cell, such as sub-bandgap transmittance. Finally, we present quantum efficiency of a low-bandgap Cu(In,Ga)Se2 shaded by the CuGa(S,Se)2 PEC photocathode, and discuss the potential of Cu(In,Ga)Se2/CuGa(S,Se)2 tandem structures for non-assisted PEC water splitting.

Two photon tandem photoanode with black phosphorous quantum dot sensitized BiVO4 for solar water splitting

2022 ◽  
Author(s):  
Bingjun Jin ◽  
Yoonjun Cho ◽  
Cheolwoo Park ◽  
Jeehun Jeong ◽  
Sungsoon Kim ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Solar Water ◽  
Two Photon ◽  
Solar Water Splitting ◽  
Pec Water Splitting

The photoelectrochemical (PEC) water splitting efficiency is profoundly restricted by the limited light harvesting, rapid charge recombination, and sluggish water oxidation kinetics, in which the construction of a photoelectrode requires...

Laser-Textured Metal Substrates as Photoanodes for Enhanced PEC Water Splitting Reactions

2018 ◽  
Vol 20 (9) ◽  
pp. 1800167 ◽  
Author(s):  
Danny Bialuschewski ◽  
Jan S. Hoppius ◽  
Robert Frohnhoven ◽  
Meenal Deo ◽  
Yakup Gönüllü ◽  
...  
Keyword(s):  
Water Splitting ◽  
Metal Substrates ◽  
Pec Water Splitting

Coupling NiCo catalysts with carbon quantum dots on hematite photoanodes for highly efficient oxygen evolution

2022 ◽  
Author(s):  
Yingpu Bi ◽  
Bin zhao ◽  
Chenchen Feng ◽  
Xiaojuan Huang ◽  
Yong Ding
Keyword(s):  
Quantum Dots ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Carbon Quantum Dots ◽  
Hole Transfer ◽  
Highly Efficient ◽  
Pec Water Splitting

Highly efficient hole transfer from photoanodes to oxygen evolution catalysts is crucial for solar photoelectrochemical (PEC) water splitting. Herein, we demonstrated the coupling of NiCo catalysts with carbon quantum dots...

Vacancy defect engineering of BiVO4 photoanodes for photoelectrochemical water splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Songcan Wang ◽  
Xin Wang ◽  
Boyan Liu ◽  
Zhaochen Guo ◽  
Kostya Ostrikov ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Vacancy Defect ◽  
Photoelectrochemical Water Splitting ◽  
Defect Engineering ◽  
Promising Technology ◽  
Pec Water Splitting

Photoelectrochemical (PEC) water splitting has been regarded as a promising technology for sustainable hydrogen production. The development of efficient photoelectrode materials is the key to improve the solar-to-hydrogen (STH) conversion...

Photoanode of LDH catalyst decorated semiconductor heterojunction of BiVO4/CdS to enhance PEC water splitting efficiency

2019 ◽  
Vol 44 (45) ◽  
pp. 24642-24652 ◽  
Author(s):  
Shouli Bai ◽  
Qiangqiang Li ◽  
Jingyi Han ◽  
Xiaojun Yang ◽  
Xin Shu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Pec Water Splitting

scholarly journals TiO2 Nanosheet Arrays with Layered SnS2 and CoOx Nanoparticles for Efficient Photoelectrochemical Water Splitting

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Zhou Cao ◽  
Yanling Yin ◽  
Peng Fu ◽  
Dong Li ◽  
Yulan Zhou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Environmental Issues ◽  
Charge Carriers ◽  
Oxidation Catalyst ◽  
Hydrogen Fuel ◽  
Nanosheet Array ◽  
Nanosheet Arrays ◽  
Global Energy Supply ◽  
Pec Water Splitting

Abstract Converting solar energy into sustainable hydrogen fuel by photoelectrochemical (PEC) water splitting is a promising technology to solve increasingly serious global energy supply and environmental issues. However, the PEC performance based on TiO2 nanomaterials is hindered by the limited sunlight-harvesting ability and its high recombination rate of photogenerated charge carriers. In this work, layered SnS2 absorbers and CoOx nanoparticles decorated two-dimensional (2D) TiO2 nanosheet array photoelectrode have been rationally designed and successfully synthesized, which remarkably enhanced the PEC performance for water splitting. As the result, photoconversion efficiency of TiO2/SnS2/CoOx and TiO2/SnS2 hybrid photoanodes increases by 3.6 and 2.0 times under simulated sunlight illumination, compared with the bare TiO2 nanosheet arrays photoanode. Furthermore, the TiO2/SnS2/CoOx photoanode also presented higher PEC stability owing to CoOx catalyst served as efficient water oxidation catalyst as well as an effective protectant for preventing absorber photocorrosion.

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