Polyethylene glycol (PEG)/silicon dioxide grafted aminopropyl group and carboxylic multi-walled carbon nanotubes (SAM) composite as phase change material for light-to-heat energy conversion and storage

Yan Dongmao; Ming Weixing; Liu Song; Yin Guoqiang; Zhang Yuang; Tang Bingtao; Zhang Shufen

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Polyethylene glycol (PEG)/silicon dioxide grafted aminopropyl group and carboxylic multi-walled carbon nanotubes (SAM) composite as phase change material for light-to-heat energy conversion and storage

机译：聚乙二醇（PEG）/二氧化硅接枝氨基丙基和羧基多壁碳纳米管（SAM）复合材料作为相变材料，用于光热能转换和储存

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The development of light-to-heat energy conversion and storage materials with high thermal conductivity and stability is very helpful to overcome limitations of using solar energy. Herein, novel light-induced phase change materials (PCMs) were synthesized by sol-gel method using polyethylene glycol (PEG) as phase change material, silicon dioxide (SiO2) network with aminopropyl group and carboxylic multi-walled carbon nanotubes (MWCNTs-COOH) as supporting material (SAM). The developed PEG/SAM have many advantages, including improved thermal conductivities (43.5-108.7% increase as compared to PEG), high energy storage densities (116-133 J/g), high light-to-heat energy conversion and storage efficiency (85.8-88.3%), and good form-stable performance. Moreover, the PEG/SAM maintained excellent chemical stability and thermal performance durability after 500-cycle thermal experiments and 200 cycles light-induced phase transitions. Thus, the developed light-to-heat energy conversion and storage PCMs have the potential for many applications and the efficient utilisation of solar energy.

机译：具有高导热率和稳定性的光热能转换和储存材料的发展非常有助于克服使用太阳能的限制。在此，通过使用聚乙二醇（PEG）作为相变材料，二氧化硅（SiO 2）网络，用氨基丙基和羧基多壁碳纳米管（MWCNTS-COOH，通过溶胶 - 凝胶法合成了新的光诱导的相变材料（PCM）。用氨基丙基和羧基多壁碳纳米管（MWCNTS-COOH ）作为支撑材料（SAM）。开发的PEG / SAM具有许多优点，包括改善的热导流率（与PEG相比增加43.5-108.7％），高储能密度（116-133×G），高光热能转换和储存效率（ 85.8-88.3％），良好的形式稳定的性能。此外，PEG / SAM在500周期热实验和200次循环光诱导的相变后保持优异的化学稳定性和热性能耐久性。因此，开发的光热能转换和存储PCM具有许多应用的潜力和太阳能的有效利用。

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来源
《Journal of Energy Storage》 |2021年第4期|102428.1-102428.9|共9页
作者
Yan Dongmao; Ming Weixing; Liu Song; Yin Guoqiang; Zhang Yuang; Tang Bingtao; Zhang Shufen;
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Dalian Univ Technol State Key Lab Fine Chem Dalian 116024 Peoples R China|Shenyang Res Inst Chem Ind Co Ltd Res Inst Chem Adv Mat Shenyang 110021 PR Peoples R China;

Shenyang Res Inst Chem Ind Co Ltd Res Inst Chem Adv Mat Shenyang 110021 PR Peoples R China;

Shenyang Res Inst Chem Ind Co Ltd Res Inst Chem Adv Mat Shenyang 110021 PR Peoples R China;

Shenyang Res Inst Chem Ind Co Ltd Res Inst Chem Adv Mat Shenyang 110021 PR Peoples R China;

Dalian Univ Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

Dalian Univ Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

Dalian Univ Technol State Key Lab Fine Chem Dalian 116024 Peoples R China;

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正文语种 eng
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Light-to-heat conversion; Carboxylic multi-walled carbon nanotubes; Phase change materials; Silicon dioxide; Solar energy storage;

机译：光到热转换;羧基多壁碳纳米管;相变材料;二氧化硅;太阳能储存;

Polyethylene glycol (PEG)/silicon dioxide grafted aminopropyl group and carboxylic multi-walled carbon nanotubes (SAM) composite as phase change material for light-to-heat energy conversion and storage

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