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首页> 外文期刊>RSC Advances >All-solid-state nanocomposite electrolytes composed of an ionic polymer with polar groups and surface-modified SiO2 nanoparticles for dye-sensitized solar cells
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All-solid-state nanocomposite electrolytes composed of an ionic polymer with polar groups and surface-modified SiO2 nanoparticles for dye-sensitized solar cells

机译：由具有极性基团的离子聚合物组成的全固态纳米复合电解质和用于染料敏化太阳能电池的表面改性的SiO2纳米颗粒

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摘要

Solid-state electrolytes based on ionic polymer (IP)–SiO _(2) nanocomposite are prepared for dye-sensitized solar cells (DSCs). An IP with a cationic main chain and polar ester and carbonyl groups is synthesized from 2,3-dichloropropionic acid methyl ester and N , N ′-carbonyldiimidazole. SiO _(2) nanoparticles are chemically modified by silane coupling agents KH550 and KH570. The polar groups in the IP and on the surface of the modified SiO _(2) can facilitate the ionization of iodide in the electrolyte and increase the number of charge carriers. Moreover, according to the principle of ‘like dissolves like’, SiO _(2) modified by polar groups can be compatible with the IP and yield a long-term stability for the electrolyte. Eventually, the solid-state electrolyte containing IP and modified SiO _(2) achieves a high conductivity of 3.05 mS cm ~(?1) . The all-solid-state DSCs with the composite electrolyte have favorable stability and photo-to-current conversion efficiencies of 5.03% at 30 mW cm ~(?2) and 4.86% at 100 mW cm ~(?2) .
机译：基于离子聚合物（IP）-SiO _（2）纳米复合材料的固态电解质用于染料敏化太阳能电池（DSC）。用阳离子主链和极性酯和羰基的IP由2,3-二氯共他性酸甲酯和N，N'-CarbonyImidazole合成。 SiO_（2）纳米颗粒通过硅烷偶联剂KH550和KH570化学改性。 IP中的极性基团和改性SiO_（2）的表面上可以促进电解质中碘化物的电离，并增加电荷载体的数量。此外，根据“如溶解的原理”，由极性基团改性的SiO_（2）可以与IP兼容，并产生电解质的长期稳定性。最终，含有IP和改性SiO_（2）的固态电解质达到3.05ms cm〜（α1）的高导电率。具有复合电解质的全固态DSC具有良好的稳定性，光电至电流转化效率为5.03％，在100mW cm〜（α2）下为4.86％，4.86％。

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