Robust bacterial cellulose/BNNS hybrid aerogel-based composite phase change materials with enhanced thermal performance for efficient thermal management

IF 4.8 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-06-27 DOI:10.1007/s10570-025-06643-3

Xiangqing Li, Qianqian Luo, Zhitao Wang, Na Sun

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引用次数: 0

Abstract

Phase change materials (PCMs) have great potential as thermal management materials for high power density devices due to their impressive heat storage capacity and temperature regulation capabilities. However, the shape-stable PCMs with high thermal conductivity while effectively preventing latent heat loss pose significant challenges for their application in energy storage and temperature control systems. Herein, a green, lightweight and robust three-dimensional interconnected bacterial cellulose/boron nitride nanosheet (BC/BNNS) aerogel skeleton was developed to encapsulate the PCMs of paraffin via a facile freeze-drying and vacuum impregnation route. Benefiting from the interconnected arrangement of BNNS in hybrid aerogels skeleton, the resultant BC/BNNS based composite PCMs not only exhibits a high latent heat of 203.58 J/g, but also achieves an enhancement of thermal conductivity from 0.21 to 1.16 W/m·K compared to pure paraffin. Furthermore, the obtained composite PCMs with desirable thermophysical properties have great potential for extraordinary thermal management in electronic devices.

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坚固的细菌纤维素/BNNS混合气凝胶基复合相变材料，具有增强的热性能，有效的热管理

相变材料（PCMs）由于其令人印象深刻的蓄热能力和温度调节能力，作为高功率密度器件的热管理材料具有巨大的潜力。然而，在有效防止潜热损失的同时，具有高导热系数的形状稳定的pcm对其在储能和温度控制系统中的应用提出了重大挑战。本研究开发了一种绿色、轻质、坚固的三维互联细菌纤维素/氮化硼纳米片（BC/BNNS）气凝胶骨架，通过快速冷冻干燥和真空浸渍的方式包裹石蜡的PCMs。由于BNNS在杂化气凝胶骨架中的互连排列，所得的BC/BNNS基复合PCMs不仅具有203.58 J/g的高潜热，而且与纯石蜡相比，导热系数从0.21提高到1.16 W/m·K。此外，所获得的复合pcm具有理想的热物理性能，在电子器件的特殊热管理方面具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.