{"title":"Synthesis and optimization of GO/TiO2@n-octadecane microcapsules for thermal management of smartphone charging","authors":"","doi":"10.1016/j.applthermaleng.2024.124409","DOIUrl":null,"url":null,"abstract":"<div><p>To reduce the charging temperature of smartphones effectively, the GO/TiO<sub>2</sub>@n-octadecane microcapsules were prepared in this study. Various testing methods were used to analyze the thermal performance of microcapsules. To achieve maximum enthalpy of phase change, various preparation conditions for the preparation process were optimized. The GO was doped into the optimized microencapsulated phase change materials for further analysis. Moreover, the GO/TiO<sub>2</sub>@n-octadecane microcapsules were used for the thermal management of smartphone charging. GO was attached to the surface of microcapsules, enhancing the thermal conductivity. Microcapsules were physically encapsulated without any chemical reactions. The enthalpies of microcapsules decreased with the proportion of GO, while the thermal conductivity increased. The prepared GO/TiO<sub>2</sub>@n-octadecane microcapsules had excellent thermal cycling stability and fire resistance. The GO could reduce the mass loss of microcapsules in high temperatures. Microencapsulated phase change materials containing 0 wt%, 1 wt%, 2 wt%, and 3 wt% GO had an excellent ability to reduce the charging temperature of smartphones, which could reduce the peak charging temperature of smartphones by 2.9, 3.1, 2.7, and 2.5 ℃, respectively. Microcapsules containing 1 wt% GO had a large enthalpy of phase transition and high thermal conductivity, which could most effectively reduce the peak charging temperature of the smartphone. Therefore, microcapsules with 1 wt% GO were the optimal microcapsules for the thermal management of smartphone charging.</p></div>","PeriodicalId":8201,"journal":{"name":"Applied Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":6.1000,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Thermal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359431124020775","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
To reduce the charging temperature of smartphones effectively, the GO/TiO2@n-octadecane microcapsules were prepared in this study. Various testing methods were used to analyze the thermal performance of microcapsules. To achieve maximum enthalpy of phase change, various preparation conditions for the preparation process were optimized. The GO was doped into the optimized microencapsulated phase change materials for further analysis. Moreover, the GO/TiO2@n-octadecane microcapsules were used for the thermal management of smartphone charging. GO was attached to the surface of microcapsules, enhancing the thermal conductivity. Microcapsules were physically encapsulated without any chemical reactions. The enthalpies of microcapsules decreased with the proportion of GO, while the thermal conductivity increased. The prepared GO/TiO2@n-octadecane microcapsules had excellent thermal cycling stability and fire resistance. The GO could reduce the mass loss of microcapsules in high temperatures. Microencapsulated phase change materials containing 0 wt%, 1 wt%, 2 wt%, and 3 wt% GO had an excellent ability to reduce the charging temperature of smartphones, which could reduce the peak charging temperature of smartphones by 2.9, 3.1, 2.7, and 2.5 ℃, respectively. Microcapsules containing 1 wt% GO had a large enthalpy of phase transition and high thermal conductivity, which could most effectively reduce the peak charging temperature of the smartphone. Therefore, microcapsules with 1 wt% GO were the optimal microcapsules for the thermal management of smartphone charging.
期刊介绍:
Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application.
The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.