Phase Change Microcapsules Shelled with Silica Functionalized with CNTs for Enhanced Thermal Conductivity and Solar Thermal Conversion

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Nano Research Pub Date : 2025-06-09 DOI:10.4028/p-yih64l

Jia Lei Li, Zhongyu Hou, Hao Cheng, Ya Ping, Ai Hua He, Huarong Nie

{"title":"Phase Change Microcapsules Shelled with Silica Functionalized with CNTs for Enhanced Thermal Conductivity and Solar Thermal Conversion","authors":"Jia Lei Li, Zhongyu Hou, Hao Cheng, Ya Ping, Ai Hua He, Huarong Nie","doi":"10.4028/p-yih64l","DOIUrl":null,"url":null,"abstract":"Advanced phase-change materials (PCMs), as novel energy-storage technologies, offer a practical solution to addressing the global energy crisis by improving both energy efficiency and sustainability. In this study, silica (SiO₂)-shelled phase-change microcapsules functionalized with carboxylated carbon nanotubes (CNTs) were designed and prepared to enhance thermal conductivity, photothermal conversion, and operational durability. The silica shell, featuring a Janus structure with exterior amine groups, facilitates covalent bonding with CNTs, effectively increasing thermal transfer and maintaining structural integrity. The as-prepared PCMs are characterized by an encapsulation efficiency exceeding 66% and a phase-change enthalpy over 120 J/g, besides the enhanced thermal conductivity, solar thermal conversion, and profound resistance to leakage. Long-term stability tests reveal that the SiO₂-shelled phase-change microcapsules coated with CNTs ( S 0/CNTs ) maintain thermal performance after 100 heating-cooling cycles, showing sustained reliability. These advantages highlight the potential of S0/CNTs in sustainable thermal energy storage applications, offering a versatile solution for enhancing the efficiency and durability of energy storage systems.","PeriodicalId":16525,"journal":{"name":"Journal of Nano Research","volume":"88 1","pages":"75-87"},"PeriodicalIF":1.0000,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nano Research","FirstCategoryId":"0","ListUrlMain":"https://doi.org/10.4028/p-yih64l","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Advanced phase-change materials (PCMs), as novel energy-storage technologies, offer a practical solution to addressing the global energy crisis by improving both energy efficiency and sustainability. In this study, silica (SiO₂)-shelled phase-change microcapsules functionalized with carboxylated carbon nanotubes (CNTs) were designed and prepared to enhance thermal conductivity, photothermal conversion, and operational durability. The silica shell, featuring a Janus structure with exterior amine groups, facilitates covalent bonding with CNTs, effectively increasing thermal transfer and maintaining structural integrity. The as-prepared PCMs are characterized by an encapsulation efficiency exceeding 66% and a phase-change enthalpy over 120 J/g, besides the enhanced thermal conductivity, solar thermal conversion, and profound resistance to leakage. Long-term stability tests reveal that the SiO₂-shelled phase-change microcapsules coated with CNTs ( S 0/CNTs ) maintain thermal performance after 100 heating-cooling cycles, showing sustained reliability. These advantages highlight the potential of S0/CNTs in sustainable thermal energy storage applications, offering a versatile solution for enhancing the efficiency and durability of energy storage systems.

查看原文本刊更多论文

以碳纳米管功能化二氧化硅为外壳的相变微胶囊增强导热性和太阳能热转换

先进相变材料（PCMs）作为一种新型的储能技术，通过提高能源效率和可持续性，为解决全球能源危机提供了一种实用的解决方案。在本研究中，设计并制备了羧化碳纳米管（CNTs）功能化的二氧化硅（SiO₂）壳相变微胶囊，以提高热导率、光热转换和使用耐久性。二氧化硅外壳具有Janus结构，具有外部胺基，有助于与CNTs形成共价键，有效地增加热传递并保持结构完整性。所制备的pcm具有包封效率超过66%、相变焓超过120 J/g、导热性、太阳热转换能力增强、抗泄漏能力强等特点。长期稳定性测试表明，包覆CNTs （s0 /CNTs）的SiO₂壳相变微胶囊在100次加热-冷却循环后仍能保持热性能，表现出持续的可靠性。这些优势突出了S0/CNTs在可持续热能储存应用中的潜力，为提高储能系统的效率和耐久性提供了一个通用的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Nano Research 工程技术-材料科学：综合

CiteScore

2.40

自引率

5.90%

发文量

审稿时长

4 months

期刊介绍： "Journal of Nano Research" (JNanoR) is a multidisciplinary journal, which publishes high quality scientific and engineering papers on all aspects of research in the area of nanoscience and nanotechnologies and wide practical application of achieved results. "Journal of Nano Research" is one of the largest periodicals in the field of nanoscience and nanotechnologies. All papers are peer-reviewed and edited. Authors retain the right to publish an extended and significantly updated version in another periodical.