Un dispositivo fotovoltaico-fotoelectroquímico monolítico para la producción de hidrógeno a través de la división del agua
Video Experimental Relacionado
Updated: Oct 30, 2026

10:21
Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
1National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401-3393, USA.
Resumen
Este estudio presenta un nuevo dispositivo fotoelectroquímico-fotovoltaico para la electrólisis directa del agua. El sistema integrado utiliza solo luz como entrada de energía, logrando una eficiencia de producción de hidrógeno del 12,4%.
Área de la Ciencia:
- Energía renovable Energía renovable.
- Ciencia de los materiales Ciencia de los materiales.
- La electroquímica es electroquímica.
Sus antecedentes:
- La electrólisis directa del agua ofrece una ruta sostenible para la producción de hidrógeno.
- Los métodos existentes a menudo requieren una entrada eléctrica externa, lo que aumenta la complejidad y el costo.
- Los sistemas integrados fotoelectroquímico-fotovoltaicos prometen una división de agua simplificada y impulsada por la luz.
Objetivo del estudio:
- Desarrollar y demostrar un nuevo dispositivo fotoelectroquímico-fotovoltaico monolítico, integrado y monolítico para la electrólisis directa del agua.
- Para evaluar la eficiencia de producción de hidrógeno del sistema desarrollado bajo iluminación.
Principales métodos:
- Diseñó y fabricó una célula fotoelectroquímica monolítica integrada con un dispositivo fotovoltaico.
- La luz utilizada como la única fuente de energía para la división del agua.
- Eficiencia de producción de hidrógeno medida basada en corriente de cortocircuito y menor valor de calentamiento del hidrógeno.
Principales resultados:
- Se logró con éxito la electrólisis directa del agua utilizando el diseño integrado fotoelectroquímico-fotovoltaico.
- El sistema funciona únicamente con la entrada de energía luminosa.
- Demostró una eficiencia de producción de hidrógeno del 12,4%.
Conclusiones:
- El novedoso diseño integrado fotoelectroquímico-fotovoltaico permite una eficiente electrólisis directa del agua impulsada por la luz.
- Este enfoque representa un avance significativo en la tecnología de producción de hidrógeno solar.
- Una mayor optimización podría conducir a eficiencias aún más altas para la generación sostenible de hidrógeno.
Más Videos Relacionados
Videos de Conceptos Relacionados
Photosystem II
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment molecules...
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment molecules...
The Z-Scheme of Electron Transport in Photosynthesis
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
Voltaic/Galvanic Cells
Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Oxygenic Photosynthesis
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate light...
Electrolysis
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
Photosystem I
Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...

