SnO2 and TiO2 coated porous Ag@C nanosphere with hierarchical structure, and preparation method and application of nanosphere

• Main Authors: ZHAO PEILU, ZHENG DI, LIU TONG, LIU FENGMIN, LI DAN, LU GEYU
• Format: Patent
• Language: Chinese; English
• Published: 04.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention relates to a SnO2 and TiO2 coated porous Ag@C nanosphere (ACSTS) with a hierarchical structure, a preparation method thereof and application of the nanosphere serving as a photo-anode material of a dye-sensitized solar cell, belonging to the technical field of the dye-sensitized solar cell. The dye-sensitized solar cell disclosed by the invention comprises conductive glass FTO, an ACSTS photo-anode thin film, an electrolyte solvent (I<->/I<3->) and a Pt counter electrode, wherein an electrolyte solution is injected into the cell by a vacuum backfilling method. Due to the existing of Ag@C in the ACSTS, the porous ACSTS nanocrystal thin film is endowed with rapid electron conduction capability and favorable light absorption performance; the electron recombination rate is suppressed to a certain extent by a SnO2 layer, and the light current is increased; the outermost layer of the ACSTS comprises needle-like TiO2, thus, a rough and porous shell structure is formed, and the attachment of more dyes a