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首页> 外文会议>Materials Research Society Meeting >Novel Polymer Gel Electrolytes with Poly(oxyethylene)-Amidoacid Microstructures for Highly Efficient Quasi-Solid-State Dye-Sensitized Solar Cells
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Novel Polymer Gel Electrolytes with Poly(oxyethylene)-Amidoacid Microstructures for Highly Efficient Quasi-Solid-State Dye-Sensitized Solar Cells

机译：具有聚（氧乙烯）的新型聚合物凝胶电解质，用于高效准固态染料敏化太阳能电池的聚（氧乙烯）-氨基酸微观结构

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A cross-linked copolymer was designed and synthesized by the imidation of poly(oxyethylene)-diamine and 4,4'-oxydiphthalic anhydride, and followed by a late-stage curing to generate the cross-linked gels. The copolymers consisting of crosslinking sites and multiple functionalities such as poly(oxyethylene)-segments, amido-acids, imides, and amine termini, characterized by Fourier Transform Infrared Spectroscopy. After the self-curing at 80 °C, the gel-like material enabled to absorb liquid form of electrolytes in the medium of propylene carbonate (PC), dimethylformamide (DMF), and N-methyl-2-pyrrolidone (NMP). By using a field emission scanning electronic microscope, we observed a 3D interconnected nanochannel microstructure, within which, the liquid electrolytes were absorbed. When the novel polymer gel electrolyte (PGE) was fabricated into a dye-sensitized solar cell (DSSC), an extremely high photovoltaic performance was demonstrated. The PGE, absorbed 76.7 wt% of the liquid electrolyte (soaking in the PC solution) based on the polymer's weight gave rise to a power conversion efficiency of 8.31%, superior to that (7.89%) of the DSSC with liquid electrolytes. It was further demonstrated that the cell had a long-term stability during the test of 1000h at-rest at room temperature or only slightly decreasing in efficiency of 5%. This is the first time demonstration for a PGE exhibiting a higher performance than its liquid counterpart cell. The observation is ascribed to the suppression of the back electron transfer through the unique morphology of the polymer microstructures.
机译：通过聚（氧乙烯） - 二胺和4,4'-氧二硫代酸酐的酰亚胺化设计和合成了交联共聚物，然后进行了后期固化以产生交联凝胶。由交联位点和多种功能组成的共聚物，例如聚（氧乙烯） - 次级，酰胺酸，酰亚胺和胺末端，其特征在于傅里叶变换红外光谱。在80℃的自固化之后，使凝胶状材料能够吸收碳酸亚丙酯（PC），二甲基甲酰胺（DMF）和N-甲基-2-吡咯烷酮（NMP）的介质中的电解质形式。通过使用场发射扫描电子显微镜，我们观察到3D互连的纳米通道微观结构，在此内，液体电解质被吸收。当将新型聚合物凝胶电解质（PGE）制成染料敏化的太阳能电池（DSSC）时，证明了极高的光伏性能。基于聚合物的重量吸收了76.7wt％的液体电解质（在PC溶液中浸泡）的功率转化效率为8.31％，优于具有液体电解质的DSSC的（7.89％）。进一步证明，在室温下在1000H的测试期间，该电池具有长期稳定性，或在室温下静置或仅略微降低5％。这是PGE的第一次演示表现出比其液体对应细胞更高的性能。通过聚合物微结构的独特形态归因于抑制背电子传递的抑制。

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