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Mesogenic polymer composites for temperature-programmable thermoelectric ionogels
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-06-15 , DOI: 10.1039/d2ta03120e Sienoh Park 1 , Byeonggwan Kim 1 , Cheolhyun Cho 1 , Eunkyoung Kim 1
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-06-15 , DOI: 10.1039/d2ta03120e Sienoh Park 1 , Byeonggwan Kim 1 , Cheolhyun Cho 1 , Eunkyoung Kim 1
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Thermally programmable ionic thermoelectric (iTE) composites with optical tunability are explored as a transmittance tunable energy harvester to operate as a thermal sensor for low-grade heat sources. Liquid crystalline ionogels (LCIs) for iTE films are prepared via photopolymerization of ionic monomers (2-acrylamido-2-methyl-1-propanesulfonic acid) and hydrophobic nematic monomers (4-methoxyphenyl 4-((6-(acryloyloxy)hexyl)oxy)benzoate) in the presence of an ionic liquid. The LCI film shows reversible temperature programmability as well as fast transmittance switching at 65 °C, at which temperature the nematic-isotropic phase transition occurs. The LCI film for the iTE device shows a phase-controlled ionic Seebeck coefficient of −5.9 mV K−1 at 80% RH and produces a maximum thermoelectric power factor of 2.4 nW m−1 K−2. Taking advantage of the reversible thermoresponsiveness, the LCI iTE film is used to demonstrate a self-detectable and wireless fire alarm, which enables detection of elevated temperatures with the naked eye. Furthermore, the LCI iTE film is integrated as a thermal switch for an electrochromic window, a liquid crystal display, or a light-emitting diode to realize autonomous self-powered electronics that can be used to detect and view temperature changes in the environment.
中文翻译：
用于温度可编程热电离子凝胶的介晶聚合物复合材料
探索具有光学可调性的热可编程离子热电 (iTE) 复合材料作为透射率可调能量收集器，用作低等级热源的热传感器。用于 iTE 薄膜的液晶离子凝胶 (LCI) 是通过离子单体 (2-丙烯酰胺-2-甲基-1-丙磺酸) 和疏水向列单体 (4-甲氧基苯基 4-((6-(丙烯酰氧基)己基)氧基) 的光聚合制备的)苯甲酸盐)在离子液体的存在下。LCI 薄膜显示出可逆的温度可编程性以及在 65°C 时的快速透射率切换，在该温度下发生向列-各向同性相变。iTE 器件的 LCI 薄膜显示相控离子塞贝克系数为 -5.9 mV K -1在 80% RH 和产生 2.4 nW m -1 K -2的最大热电功率因数。利用可逆的热响应性，LCI iTE 薄膜用于演示一种可自我检测的无线火灾报警器，可以用肉眼检测升高的温度。此外，将 LCI iTE 薄膜集成为电致变色窗、液晶显示器或发光二极管的热开关，以实现可用于检测和查看环境温度变化的自主自供电电子设备。
更新日期：2022-06-15
中文翻译：
用于温度可编程热电离子凝胶的介晶聚合物复合材料
探索具有光学可调性的热可编程离子热电 (iTE) 复合材料作为透射率可调能量收集器，用作低等级热源的热传感器。用于 iTE 薄膜的液晶离子凝胶 (LCI) 是通过离子单体 (2-丙烯酰胺-2-甲基-1-丙磺酸) 和疏水向列单体 (4-甲氧基苯基 4-((6-(丙烯酰氧基)己基)氧基) 的光聚合制备的)苯甲酸盐)在离子液体的存在下。LCI 薄膜显示出可逆的温度可编程性以及在 65°C 时的快速透射率切换，在该温度下发生向列-各向同性相变。iTE 器件的 LCI 薄膜显示相控离子塞贝克系数为 -5.9 mV K -1在 80% RH 和产生 2.4 nW m -1 K -2的最大热电功率因数。利用可逆的热响应性，LCI iTE 薄膜用于演示一种可自我检测的无线火灾报警器，可以用肉眼检测升高的温度。此外，将 LCI iTE 薄膜集成为电致变色窗、液晶显示器或发光二极管的热开关，以实现可用于检测和查看环境温度变化的自主自供电电子设备。
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