Photoelectric chemical battery electrode and preparation method and application thereof

A technology of photoelectrochemical cells and electrodes, which is applied in the field of new materials and new energy sources, can solve the problems of limiting the effective collection of photogenerated carriers, high equipment requirements, complex preparation processes, etc., and achieves short preparation process time and accelerated transfer Speed, non-toxic effect of raw materials

Inactive Publication Date: 2013-04-24
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its short-circuit current is low, 3.1mA / cm 2 , and its preparation process is complex and requires high equipment requirements (Energy & Environmental Science., 2011, 4, 1311.)
Currently, Cu 2 The highest efficiency that O-based solar cells can achieve is 2% (Applied Physics Letters., 2006, 88, 163502.), which is still relatively low, mainly due to the photogenerated electrons and holes in Cu 2 The O surface is extremely easy to recombine, which limits the effective collection of photogenerated carriers

Method used

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  • Photoelectric chemical battery electrode and preparation method and application thereof
  • Photoelectric chemical battery electrode and preparation method and application thereof
  • Photoelectric chemical battery electrode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0037] Clean the FTO conductive glass, then sonicate it in deionized water, ethanol and acetone for 30 minutes, and dry it for later use;

[0038] Prepare sodium acetate solution and copper acetate solution respectively, then mix the two and stir evenly, wherein the molar ratio of sodium acetate and copper acetate is 5:1; add acetic acid to adjust the pH value to about 5.4;

[0039] Using the above solution as the electrolyte, the cuprous oxide film containing metallic copper particles is electrochemically deposited on the FTO conductive glass: the FTO conductive glass is used as the working electrode, the platinum wire is used as the counter electrode, and the saturated calomel electrode is used as the reference electrode. Potential mode, keep the potential at -245mV, react at 60°C for 20min;

[0040] Take out the electrode sample, wash it three times with deionized water or absolute ethanol, and then dry it at 60°C until all the water or ethanol volatilizes to obtain the pho...

Embodiment 2

[0046] The only difference between this embodiment and embodiment 1 is that the electrodeposition time is replaced by 60 min from 20 min, and the rest of the content is the same as that described in embodiment 1.

[0047] The film thickness of the photoelectrochemical cell electrode prepared in this embodiment is about 15 μm.

[0048] Figure 5 It is the SEM picture of the electrode sample that the present embodiment makes, by Figure 5 It can be seen that the increase of deposition time will not only increase the thickness of the film, but also increase the number of metal particles attached to the surface of the film.

[0049] Figure 6 It is that the photoelectrochemical cell assembled in the present embodiment has an intensity of 100mV / cm 2 The current-voltage characteristic curve of the AM1.5G simulated sunlight test. During the test, use a light-shielding plate with a hole in the center to determine that the effective area of ​​the battery is 0.12cm 2 ,Depend on Figu...

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Abstract

The invention discloses a photoelectric chemical battery electrode and a preparation method and application thereof. The photoelectric chemical battery electrode comprises a conductive substrate and a semiconductor thin film, and is characterized in that the semiconductor thin film is a nano-cuprous oxide thin film which contains metal copper micro particles. The electrode is prepared by directly growing the cuprous oxide thin film with the metal copper micro particles on the conductive substrate by an electrochemical deposition method. The conductive metal Cu micro particles are introduced into the Cu2O thin film, so that the conductivity of the electrode is improved; the transmission rate of electrons to the conductive substrate is increased; composition of current carriers is reduced; a short circuit current is increased; and the energy conversion efficiency of a battery is improved. Compared with the prior art, the photoelectric chemical battery electrode has the advantages that the performance of a photoelectric chemical battery assembled by the electrode is greatly improved, and the photoelectric conversion efficiency can be up to 3.13 percent at most.

Description

technical field [0001] The invention relates to a photoelectrochemical cell electrode and its preparation method and application, belonging to the fields of new material technology and new energy technology. Background technique [0002] The depletion of traditional energy and environmental pollution have prompted people to pay more and more attention to the development and utilization of new energy. Solar energy, as a clean and renewable energy source, has attracted widespread attention and is considered to be the best substitute for traditional energy sources. Most of the existing solar cells have disadvantages such as complex manufacturing process and high cost, which limit their wide application. Therefore, it has important theoretical and practical significance to seek new solar cells with non-toxic and cheap raw materials, simple preparation process, low energy consumption and low cost. [0003] Cuprous oxide (Cu 2 O) is a p-type semiconductor with a band gap of abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M14/00H01G9/042H01G9/20
Inventor 孙静邵芳高濂
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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