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How does a photoelectric chemical cell work? 

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A photoelectrochemical cell is a device that converts solar energy into useful fuels or electricity. It consists of a photoactive electrode, an electrolyte, and an auxiliary electrode. The photoactive electrode receives light through a light window and initiates a redox reaction. The electrolyte facilitates the movement of ions between the electrodes, while the auxiliary electrode completes the circuit. The cell operates in three main modes: regenerative PECs, where no Gibbs function change occurs in the cell; photoelectrolytic cells, where two separate redox reactions are driven at the electrodes; and cells for photoelectrocatalysis, which have potential applications in environmental purification. Advances in cell design and materials have led to increased efficiency, corrosion control, and long-term stability. Nanostructured materials and dye sensitization have also been developed to enhance performance.

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Book ChapterDOI
F. Decker, S. Cattarin 
01 Jan 2009
5 Citations
The paper does not provide a direct explanation of how a photoelectrochemical cell works.
The paper does not provide a detailed explanation of how a photoelectrochemical cell works.
The paper does not provide information on how a photoelectric chemical cell works. The paper is about a specific photovoltaic cell for supplying power to a chemical machine in chemical production.
The paper does not provide a direct explanation of how a photoelectrochemical cell works.
The paper does not provide information on how a photoelectrochemical cell works.

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What is photoelectric colorimetry?4 answersPhotoelectric colorimetry is a technique used to determine the concentration of a substance in a solution by analyzing the intensity of light transmitted through the solution. It involves passing a light beam of a specific wavelength through the solution, and measuring the amount of light absorbed by the solution. The absorption of light follows Beer-Lambert's law, which states that the amount of transmitted light decreases exponentially with an increase in the concentration of the absorbing medium. In photoelectric colorimetry, a colorimeter is used to detect the intensity of light transmitted through the solution. The light passes through the sample and is captured by a photodiode sensor, which converts the light into an output voltage. This voltage is then amplified and displayed on a device such as an Arduino with an LCD screen.
Can photoelectrochemical wayproduces hydrogen?4 answersYes, the photoelectrochemical process can produce hydrogen. Researchers have been exploring the use of photoelectrochemical cells for hydrogen generation, utilizing efficient and low-cost photoelectrode materials under practical operating conditions. These cells have shown potential for converting sunlight into hydrogen energy. In addition, the production of hydrogen from solar energy and abundant reagents offers a promising pathway to a sustainable fuel economy and chemical industry. The photoelectrochemical process involves the splitting of water molecules to produce hydrogen, and various approaches have been developed to improve the efficiency of this process. By substituting the oxygen evolution reaction with more favorable oxidation reactions, the photoelectrochemical process can also produce value-added chemicals in addition to hydrogen. Overall, the photoelectrochemical process holds promise for the production of hydrogen and other valuable products using renewable resources.
How does photvoltaic cells work?4 answersPhotovoltaic cells, also known as solar cells, convert sunlight directly into electric current by using semiconductor materials such as crystalline silicon. When photons from sunlight strike the semiconductor material, they raise electrons from the valence band to the conduction band, creating a flow of electric current. The equilibrium carrier concentration, which is the number of carriers per volume in the conduction and valence bands without any external electric field or illumination, plays a crucial role in the function of solar cells. The generation and recombination processes of carriers are important principles in understanding how solar cells work. The current densities in solar cells are determined by minority carrier concentration gradients, which depend on factors such as donors, acceptors, minority carrier diffusion length, and material.
What are the main problems related making uses of photoelectrochemical cells?5 answersPhotoelectrochemical cells have several problems including corrosion and film formation.These cells are often not suitable for ecological or biological work as they are not easily insulated and lack standardization for specific purposes.In terms of photovoltaic operation, photoelectrochemical cells have potential advantages over solid state cells in terms of lower cost and the ability to generate more desirable products.However, the technical construction of regenerative photoelectrochemical cells for photovoltaic use is still a challenge and the reported efficiencies are not yet achieved in practical devices.
What is an electrochemical cell?5 answersAn electrochemical cell is a device that converts chemical energy into electrical energy or vice versa. It consists of two electrodes, called the anode and the cathode, which are immersed in an electrolyte solution. There are two types of electrochemical cells: galvanic or voltaic cells, which generate electrical energy from a spontaneous chemical reaction, and electrolytic cells, which use an external electrical source to drive a non-spontaneous chemical reaction. The flow of current in an electrochemical cell is caused by the transfer of electrons between the electrodes through the electrolyte. The potential energy of electrons in the working electrode is observed/controlled with respect to the reference electrode.
What is an electrochemical cell?3 answersAn electrochemical cell is a device that converts chemical energy into electrical energy or vice versa. It consists of two electrodes, an anode and a cathode, which are immersed in an electrolyte solution. There are two types of electrochemical cells: galvanic cells, also known as voltaic cells, and electrolytic cells. Galvanic cells generate electrical energy from spontaneous chemical reactions, while electrolytic cells use electrical energy to drive non-spontaneous chemical reactions. The flow of current in an electrochemical cell is caused by the transfer of electrons between the electrodes through the electrolyte. The potential energy of electrons in the working electrode is observed or controlled with respect to a reference electrode.

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