Recent Advancements in Photoelectrochemical Water Splitting for Hydrogen Production

Zhao, Yibo; Niu, Zhenjie; Zhao, Jiwu; Xue, L.; Fu, Xianzhi; Long, Jinlin

doi:10.1007/s41918-022-00153-7

Cited by 67 publications

(10 citation statements)

References 373 publications

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“…The most negative flat band potential of Pt/TiO 2 /GeSe presented at 50 °C validated the highest energy level of photogenerated electrons, indicating that a loss film was formed between the Pt/TiO 2 /GeSe and the electrolyte, and the hydrogen evolution reaction was facilitated . When the semiconductor electrode is in contact with the electrolyte, the two phases evolve to reach electrochemical equilibrium because of the different potential energy of the redox potential of the electrolyte and the Fermi level of the semiconductor, which is achieved by the crossing of the charges at the interface. , The electron transfer across the interface contributes to the formation of the space charge layer based on eqs and as follows W = true| 2 ε ε 0 q N true( U − k T q true) true| 1 / 2 U = E appl − E FB where W is the width of the space charge layer, E appl is the applied potential, and U is the potential drop in the space charge layer. The Boltzmann constant multiplied by the absolute temperature divided by the amount of charge is on the order of ten to minus two; thus, the width of the space charge layer depends on the value of U , and we do not have any extra bias in this system.…”

Section: Resultsmentioning

confidence: 99%

“…44 When the semiconductor electrode is in contact with the electrolyte, the two phases evolve to reach electrochemical equilibrium because of the different potential energy of the redox potential of the electrolyte and the Fermi level of the semiconductor, which is achieved by the crossing of the charges at the interface. 45,46 The electron transfer across the interface contributes to the formation of the space charge layer based on eqs 8 and 9 as follows…”

Section: K T Qmentioning

confidence: 99%

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Investigation of the Solar Hydrogen Sensitivity of GeSe Thin Film Photoelectrode with Photoelectrochemical Environment

Ni,

Fang,

et al. 2023

ACS Appl. Mater. Interfaces

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GeSe photovoltaic thin films are very promising for photoelectrochemical (PEC) hydrogen evolution. The GeSe-based PEC water splitting device is a system containing a photoelectrode, electrolyte, and other packages, and the performance of the GeSe photoelectrode inside the system is very sensitive to the PEC system environment, such as the electrolyte temperature, pH, and concentration. Here, we reveal how the electrolyte environment at the electrolyte/photoelectrode interface influences the optoelectronic/PEC properties of GeSe photoelectrodes. It was found that the photocurrent density of the GeSe photoelectrode increased with temperature between 10 and 50 °C but decreased when the temperature was over 50 °C. In addition, the pH values of the electrolyte were inversely proportional to the photocurrent density of the GeSe photoelectrode. Moreover, the PEC performance improved as the sodium ion concentration of the electrolyte increased. The results in this work should provide a new direction for further optimizing the performance of photoelectrodes.

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Section: Resultsmentioning

confidence: 99%

Section: K T Qmentioning

confidence: 99%

Investigation of the Solar Hydrogen Sensitivity of GeSe Thin Film Photoelectrode with Photoelectrochemical Environment

Ni,

Fang,

et al. 2023

ACS Appl. Mater. Interfaces

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“…In this part, we will briefly discuss the major challenges first and then we summarize the opportunities for the future developments in the field; considering that a significant number of review papers were published on water splitting and CO 2 reduction, − we will restrict ourselves with issues associated with halide perovskites applications.…”

Section: Challenges and Opportunities For Pec Applications Of Mhpsmentioning

confidence: 99%

Halide Perovskites for Photoelectrochemical Water Splitting and CO₂ Reduction: Challenges and Opportunities

Bienkowski,

Solarska,

Trinh

et al. 2024

ACS Catal.

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Photoelectrochemical water splitting and CO2 reduction provide an attractive route to produce solar fuels while reducing the level of CO2 emissions. Metal halide perovskites (MHPs) have been extensively studied for this purpose in recent years due to their suitable optoelectronic properties. In this review, we survey the recent achievements in the field. After a brief introduction to photoelectrochemical (PEC) processes, we discussed the properties, synthesis, and application of MHPs in this context. We also survey the state-of-the-art findings regarding significant achievements in performance, and developments in addressing the major challenges of toxicity and instability toward water. Efforts have been made to replace the toxic Pb with less toxic materials like Sn, Ge, Sb, and Bi. The stability toward water has been also improved by using various methods such as compositional engineering, 2D/3D perovskite structures, surface passivation, the use of protective layers, and encapsulation. In the last part, considering the experience gained in photovoltaic applications, we provided our perspective for the future challenges and opportunities. We place special emphasis on the improvement of stability as the major challenge and the potential contribution of machine learning to identify the most suitable formulation for halide perovskites with desired properties.

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“…The membrane electrode, as the core component of a PEMEC, is composed of an anode catalyst, a proton exchange membrane, and a cathode catalyst. An external voltage, when applied to the electrodes, initiates the HER and OER, and hydrogen and oxygen will be released correspondingly on the anode and cathode, 29 respectively. Water splitting can be expressed with various chemical formulas, depending on the electrolyte (i.e.…”

Section: Fundamentals Of Hydrogen Production By Water Electrolysismentioning

confidence: 99%

Nanoelectrocatalysts for Anodic Oxygen Evolution in Acid: A Review

Yang,

Zhao,

et al. 2023

ACS Appl. Nano Mater.

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Recent Advancements in Photoelectrochemical Water Splitting for Hydrogen Production

Cited by 67 publications

References 373 publications

Investigation of the Solar Hydrogen Sensitivity of GeSe Thin Film Photoelectrode with Photoelectrochemical Environment

Investigation of the Solar Hydrogen Sensitivity of GeSe Thin Film Photoelectrode with Photoelectrochemical Environment

Halide Perovskites for Photoelectrochemical Water Splitting and CO₂ Reduction: Challenges and Opportunities

Nanoelectrocatalysts for Anodic Oxygen Evolution in Acid: A Review

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Recent Advancements in Photoelectrochemical Water Splitting for Hydrogen Production

Cited by 67 publications

References 373 publications

Investigation of the Solar Hydrogen Sensitivity of GeSe Thin Film Photoelectrode with Photoelectrochemical Environment

Investigation of the Solar Hydrogen Sensitivity of GeSe Thin Film Photoelectrode with Photoelectrochemical Environment

Halide Perovskites for Photoelectrochemical Water Splitting and CO2 Reduction: Challenges and Opportunities

Nanoelectrocatalysts for Anodic Oxygen Evolution in Acid: A Review

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Product

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Halide Perovskites for Photoelectrochemical Water Splitting and CO₂ Reduction: Challenges and Opportunities