Photoelectrochemical Cells for Hydrogen Generation

Chouhan, Neelu; Chen, Chihkai; Chang, Wen‐Sheng; Cheng, Kong‐Wei; Liu, Ru‐Shi

doi:10.1002/9783527639496.ch12

Cited by 3 publications

(2 citation statements)

References 138 publications

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“…Photoelectrochemical (PEC) cells are useful devices designed for the chemical process of generating hydrogen via electrolysis of water, namely water splitting, under irradiation of a broad spectrum of sunlight 1 2 3 4 . In general, PEC devices are composed of photoelectrodes, where oxidation/reduction of water occurs with response to sunlight, and appropriate aqueous electrolytes containing a redox couple 5 6 7 .…”

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confidence: 99%

Towards Visible Light Hydrogen Generation: Quantum Dot-Sensitization via Efficient Light Harvesting of Hybrid-TiO2

Kim

et al. 2013

Sci Rep

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We report pronounced enhancement of photoelectrochemical hydrogen generation of a quantum dot-sensitized hybrid-TiO2 (QD/H-TiO2) electrode that is composed of a mesoporous TiO2 layer sandwiched by a double sided energy harvesting layer consisting of a surface-textured TiO2 inverse opals layer on the bottom and a patterned mesoporous TiO2 layer on the top. CdSe/H-TiO2 exhibits a maximum photocurrent density of ~16.2 mA/cm2, which is 35% higher than that of the optimized control sample (CdSe/P25), achieved by matching of the bandgap of quantum dot-sensitization with the wavelength where light harvesting of H-TiO2 is observed. Furthermore, CdSe/H-TiO2 under filtered exposure conditions recorded current density of ~14.2 mA/cm2, the greatest value in the visible range. The excellent performance of the quantum dot-sensitized H-TiO2 suggests that alteration of the photoelectrodes to suitable nanostructures with excellent light absorption may offer optimal strategies for attaining maximum efficiency in a variety of photoconversion systems.

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confidence: 99%

Towards Visible Light Hydrogen Generation: Quantum Dot-Sensitization via Efficient Light Harvesting of Hybrid-TiO2

Kim

et al. 2013

Sci Rep

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“…State-of-the-art performances of PC, PEC, and EC systems have shown great improvements in the past few decades. Most low-cost, unassisted solar water-splitting photosystems only reach STH conversion efficiencies <1%. ,, The targeted STH of 10% for commercialization remains a great challenge for PC or PEC systems. , Although III–V-based tandem PEC devices have been demonstrated to achieve an STH >10%, their poor stability limits their large-scale commercial applications . As the STH conversion efficiency has a critical impact on commercial prospects, rational design and construction of high-efficiency multicomponent systems remain the primary research goals .…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Noble-Metal-Free Multicomponent Nanointegration for Sustainable Energy Conversion

et al. 2021

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Global energy and environmental crises are among the most pressing challenges facing humankind. To overcome these challenges, recent years have seen an upsurge of interest in the development and production of renewable chemical fuels as alternatives to the nonrenewable and high-polluting fossil fuels. Photocatalysis, photoelectrocatalysis, and electrocatalysis provide promising avenues for sustainable energy conversion. Single-and dual-component catalytic systems based on nanomaterials have been intensively studied for decades, but their intrinsic weaknesses hamper their practical applications. Multicomponent nanomaterial-based systems, consisting of three or more components with at least one component in the nanoscale, have recently emerged. The multiple components are integrated together to create synergistic effects and hence overcome the limitation for outperformance. Such higher-efficiency systems based on nanomaterials will potentially bring an additional benefit in balance-of-system costs if they exclude the use of noble metals, considering the expense and sustainability. It is therefore timely to review the research in this field, providing guidance in the development of noble-metal-free multicomponent nanointegration for sustainable energy conversion. In this work, we first recall the fundamentals of catalysis by nanomaterials, multicomponent nanointegration, and reactor configuration for water splitting, CO 2 reduction, and N 2 reduction. We then systematically review and discuss recent advances in multicomponent-based photocatalytic, photoelectrochemical, and electrochemical systems based on nanomaterials. On the basis of these systems, we further laterally evaluate different multicomponent integration strategies and highlight their impacts on catalytic activity, performance stability, and product selectivity. Finally, we provide conclusions and future prospects for multicomponent nanointegration. This work offers comprehensive insights into the development of cost-competitive multicomponent nanomaterial-based systems for sustainable energy-conversion technologies and assists researchers working toward addressing the global challenges in energy and the environment.

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Nanoscale Engineering in the Development of Photoelectrocatalytic Cells for Producing Solar Fuels

et al. 2016

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Photoelectrochemical Cells for Hydrogen Generation

Cited by 3 publications

References 138 publications

Towards Visible Light Hydrogen Generation: Quantum Dot-Sensitization via Efficient Light Harvesting of Hybrid-TiO2

Towards Visible Light Hydrogen Generation: Quantum Dot-Sensitization via Efficient Light Harvesting of Hybrid-TiO2

Noble-Metal-Free Multicomponent Nanointegration for Sustainable Energy Conversion

Nanoscale Engineering in the Development of Photoelectrocatalytic Cells for Producing Solar Fuels

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