研究目的
To synthesize low-cost, Pt-free catalysts with highly durable and catalytic activities from bio-based carbon derived from waste carton for dye-sensitized solar cells (DSSCs).
研究成果
The DSSCs with as-prepared nanohybrids achieved remarkable photovoltaic performance with PCE of 6.85% and 7.32%, which are close to those of Pt (7.51%). Hybriding WC with bio-based carbon to form a composite catalyst is an effective strategy for improving the electrocatalytic activity and stability of the catalyst.
研究不足
The poor adhesion between the conducting glass substrate and the bio-based carbon materials is unfavorable for improving photovoltaic performance of DSSCs.
1：Experimental Design and Method Selection:
Bio-based porous carbon was prepared from waste carton via microwave-assisted activation (MA) and two-step chemical activation (TA) methods. Tungsten carbide (WC) was introduced into bio-based carbon to form hybrid catalysts.
2：Sample Selection and Data Sources:
Waste cartons were collected from a local supermarket in Xi'an, China.
3：List of Experimental Equipment and Materials:
Microwave oven, H3PO4, NaOH, WC from Aladdin, ZrO2 peals, FTO conductive glass, etc.
4：Experimental Procedures and Operational Workflow:
Preparation of waste carton-derived carbon, preparation of composite catalysts, fabrication of counter electrodes, fabrication of symmetrical cells and DSSCs.
5：Data Analysis Methods:
XRD, FESEM, N2 adsorption-desorption measurements, CV, EIS, Tafel polarization tests, J-V curves.
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