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首页> 外文期刊>Polymers >The Effect of Lithium Iodide to the Properties of Carboxymethyl κ-Carrageenan/Carboxymethyl Cellulose Polymer Electrolyte and Dye-Sensitized Solar Cell Performance
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The Effect of Lithium Iodide to the Properties of Carboxymethyl κ-Carrageenan/Carboxymethyl Cellulose Polymer Electrolyte and Dye-Sensitized Solar Cell Performance

机译：碘化锂对羧甲基κ-角叉菜胶/羧甲基纤维素聚合物电解质性能和染料敏化太阳能电池性能的影响

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摘要

This study was undertaken to investigate the solid biopolymer electrolytes based on a carboxymethyl κ-carrageenan/carboxymethyl cellulose blend complexed with lithium iodide of various weight ratios. The complexation of the doping salt with the polymer blend was confirmed by Fourier transform infrared spectroscopy. Ionic conductivity of the film was determined by impedance spectroscopy in the frequency range of 10 Hz to 4 MHz and in the temperature range of 303–338 K. The ionic conductivity increased with the increase in lithium iodide concentration as well as temperature. The membrane comprising 30 wt % of lithium iodide was found to give the highest conductivity of 3.89 × 10 ?3 S·cm ?1 at room temperature. The increase in conductivity was associated with the increase in the number as well as the mobility of the charge carries. The conductivity increase with temperature followed the Vogel–Tamman–Fulcher model. The fabricated dye-sensitive solar cell, FTO/TiO 2 -dye/CMKC/CMCE-LiI (30 wt %) +I 2 /Pt exhibited the highest conversion efficiency of 0.11% at a light intensity of 100 mW·cm ?2 . This indicated that the biopolymer blend electrolyte system has potential for use in dye-sensitized solar cells.
机译：进行了这项研究以研究基于与各种重量比的碘化锂络合的羧甲基κ-角叉菜胶/羧甲基纤维素共混物的固体生物聚合物电解质。掺杂盐与聚合物共混物的络合通过傅里叶变换红外光谱法确认。薄膜的离子电导率是通过阻抗光谱法在10 Hz至4 MHz的频率范围内以及303–338 K的温度范围内确定的。离子电导率随碘化锂浓度和温度的升高而增加。发现包含30重量％的碘化锂的膜在室温下具有3.89×10 -3 S·cm -1的最高电导率。电导率的增加与电荷载流子的数目以及迁移率的增加有关。电导率随温度的升高遵循Vogel–Tamman–Fulcher模型。制成的染料敏化太阳能电池FTO / TiO 2-染料/ CMKC / CMCE-LiI（30 wt％）+ I 2 / Pt在光强度为100 mW·cm？2时显示出最高的转换效率，为0.11％。这表明该生物聚合物共混电解质系统具有用于染料敏化太阳能电池的潜力。

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