文献类型：期刊文献

英文题名：Design of boron nitride/nanocellulose aerogel-stabilized phase change materials for efficient thermal energy capture and storage

作者：Liu, Chao[1,2,4] Wang, Huijie[1,2] Lei, Tong[1,2] He, Yuqian[1,2] Zhu, Fan[1,2] Liu, Yuqian[1,2] Li, Renai[1,2] Wu, Ting[3] Xiao, Huining[5]

第一作者：Liu, Chao

通信作者：Liu, C[1];Liu, C[2];Wu, T[3]

机构：[1]Nanjing Forestry Univ, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China;[2]Nanjing Forestry Univ, Jiangsu Prov Key Lab Sustainable Pulp & Paper Tech, Nanjing 210037, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[4]South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China;[5]Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada

年份：2025

卷号：295

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20250217663078);Scopus(收录号：2-s2.0-85214347133);WOS:【SCI-EXPANDED(收录号:WOS:001397576200001)】；

基金：This work was grateful for the support of the National Natural Science Foundation of China (22208161 and 32202152) , the State Key Laboratory of Pulp and Paper Engineering (202213) , and NSERC Canada.

语种：英文

外文关键词：Aerogel; Boron nitride nanosheets; Cellulose nanofibril; Phase change materials; Thermal energy storage

摘要：The practical application of polyethylene glycol (PEG) phase change materials (PCMs) necessitates exceptional shape stability, rapid thermal responsiveness, and a substantial thermal storage capacity. The present study focuses on the fabrication of a highly robust cellulose nanofibril (CNF) based aerogel with an ordered structure, serving as a three-dimensional (3D) scaffold for PEG to effectively prevent any potential leakage. Additionally, hydroxyl and amino functional groups are introduced to functionalize boron nitride nanosheets (BNNS-g), which are incorporated into the aerogel to enhance its thermal conductivity. Consequently, the porous and interconnected BNNS-g/CNF aerogel effectively encapsulates PEG while exhibiting exceptional resistance to liquid leakage during the phase change process. Due to the continuous thermally conductive pathway provided by BNNS-g and reduced contact thermal resistance, the BNNS-g/CNF/PEG composite PCMs (CPCMs) show enhanced thermal conductivity compared to pure PEG and previously reported PEG CPCMs. The BNNS-g/CNF/ PEG CPCMs demonstrate a high thermal storage density of 158.0 J/g (up to 96.6 % of pure PEG), exceptional PCM loading capacity (approximately 7000 wt%), low fill content (1.4 wt%) and cycling stability. Furthermore, the BNNS-g/CNF/PEG CPCMs exhibit excellent long-term thermal stability based on simulated residual heat absorption in an environment, underscoring their significant potential for commercial applications in thermal energy conversion and storage.