Preparation and Properties of Fe-Rich White Pine Biochar/Paraffin Composite Phase Change Materials

ZHU Ge; MEI Kuisheng; YE Hao; TAO Yubing

doi:null

您当前的位置：

首页 >

文章列表页 >

Preparation and Properties of Fe-Rich White Pine Biochar/Paraffin Composite Phase Change Materials

更新时间：2026-05-06

- Preparation and Properties of Fe-Rich White Pine Biochar/Paraffin Composite Phase Change Materials
- JOURNAL OF XI’AN JIAOTONG UNIVERSITY (2026)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院，热流科学与工程教育部重点实验室, 710049, 西安
  2.西安交通大学未来技术学院, 710049, 西安
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK02
- Received：07 February 2026，
  
  Revised：2026-04-27，
  
  Accepted：06 May 2026，
- 稿件说明：
移动端阅览
ZHU Ge, MEI Kuisheng, YE Hao, et al. Preparation and Properties of Fe-Rich White Pine Biochar/Paraffin Composite Phase Change Materials[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2026.
DOI：

ZHU Ge, MEI Kuisheng, YE Hao, et al. Preparation and Properties of Fe-Rich White Pine Biochar/Paraffin Composite Phase Change Materials[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2026. DOI：

摘要

为了解决有机固液相变材料的导热系数低及液相易泄漏难题，结合废弃生物质资源的高值化利用，提出了一种生物炭骨架结构改性与界面化学调控的双重优化策略。以废弃木材白松为碳源，采用KOH化学活化与Fe负载分步处理，制备了具有分级孔隙结构的磁性高导热生物炭载体（KFeC）。以此为基体，引入生物表面活性剂鼠李糖脂作为界面改性剂，制备了KFeC/石蜡/鼠李糖脂定型复合相变材料（KFeC/PWR）。系统研究了载体孔隙结构、界面改性等对复合材料相变行为、导热性能及热循环稳定性的影响。研究结果表明：KOH活化与Fe诱导的碳骨架局部有序化协同作用，显著优化了生物炭的孔隙结构，KFeC的比表面积提升至原始生物炭的2.03倍；原位生成的铁物种（Fe/Fe

）纳米粒子构建了高效导热网络，使复合材料的导热系数达到0.602 W·m

-1

·K

-1

，为纯石蜡的2.5倍。此外，鼠李糖脂通过在无机-有机界面处的锚定作用，显著改善了界面相容性并增强了毛细吸附力。在50次熔融凝固循环后，KFeC/PWR的潜热损失率仅为1.95%，远低于未改性组的12.25%，且无宏观泄漏现象。该研究证实了生物表面活性剂辅助封装策略的有效性，为设计长寿命、高可靠性的生物质基相变热能储存材料提供了新思路。

Abstract

To address the critical challenges of low thermal conductivity and liquid leakage in organic solid-liquid phase change materials

while promoting the high-value valorization of waste biomass resources

this study proposes a dual optimization strategy involving biochar framework modification and interfacial chemical regulation. A magnetic

highly thermally conductive biochar support (KFeC) featuring a hierarchical pore structure was prepared using waste wood (white pine) as the carbon precursor

utilizing a sequential process of KOH chemical activation and Fe impregnation. Using this biochar as the supporting matrix

a form-stable composite PCM (KFeC/PWR) was fabricated by incorporating the biosurfactant rhamnolipid as an interfacial modifier into the paraffin wax system. The effects of the support's pore structure and interfacial modification on the phase change behavior

thermal conductivity

and thermal cycling stability of the composites were systematically investigated. The results indicate that the synergistic effect of KOH activation and Fe-induced local ordering of the carbon skeleton significantly optimized the pore struct

ure of the biochar. Specifically

the specific surface area of KFeC increased to 2.03 times that of the original biochar. Furthermore

in-situ generated iron species (Fe/Fe

) nanoparticles constructed an efficient thermal conduction network

yielding a thermal conductivity of 0.602 W·m

-1

·K

-1

for the composite

which is approximately 2.5 times that of pure paraffin. Moreover

the rhamnolipid significantly improved interfacial compatibility and enhanced capillary adsorption forces through its anchoring effect at the inorganic-organic interface. After 50 melting-freezing cycles

the latent heat loss rate of KFeC/PWR was only 1.95% (significantly lower than the 12.25% observed in the unmodified group)

with no macroscopic leakage observed. This study validates the effectiveness of the biosurfactant-assisted encapsulation strategy

providing a novel approach for designing long-life

highly reliable biomass-based PCMs for thermal energy storage.

关键词

Keywords

references

孙蕾 . 基于新型电储能材料的高效储能系统设计研究 [J ] . 电气时代 , 2025 , ( 09 ): 167 - 9 .

SUN Lei . Research on efficient energy storage system design based on novel electrical energy storage materials [J ] . Electric Age , 2025 , ( 09 ): 167 - 169 .

邓涵宇 , 陈艳波 , 张宁 , et al . 面向梯级水电改造的抽水耦合压缩空气储能系统技术经济性分析 [J ] . 电工技术学报 , 2026 : 1 - 17 .

DENG Hanyu , CHEN Yanbo , ZHANG Ning , et al . Techno-economic analysis of pumped-coupled compressed air energy storage system for cascade hydropower retrofitting [J ] . Transactions of China Electrotechnical Society , 2026 : 1 - 17 .

李银飞 , 张美杰 , 顾华志 , et al . 激光选区烧结制备铝硅合金相变储热复合陶瓷及其强韧化机制 [J ] . 耐火材料 , 2026 : 1 - 10 .

LI Yinfei , ZHANG Meijie , GU Huazhi , et al . Preparation of Al-Si alloy phase-change heat-storage composite ceramics by selective laser sintering and their strengthening and toughening mechanisms [J ] . Refractories , 2026 : 1 - 10 .

尹美超 , 熊亚选 , 张艾桐露 , et al . 冶金工业矿渣废弃物在储热领域的应用 [J ] . 煤气与热力 , 2025 , 45 ( 07 ): 6 - 13+8 .

YIN Meichao , XIONG Yaxuan , ZHANG Aitonglu , FAN Yanbo . Application of metallurgical slag waste in the field of thermal energy storage [J ] . Gas & Heat , 2025 , 45 ( 07 ): 6 - 13+8 .

张杰 , 唐瑾容 , 牛晨 , et al . 潜热储热技术研究现状与发展趋势 [J ] . 能源研究与管理 , 2024 , 16 ( 01 ): 16 - 26 .

ZHANG Jie , TANG Jinrong , NIU Chen , et al . Research status and development trends of latent heat thermal energy storage technology [J ] . Energy Research and Management , 2024 , 16 ( 01 ): 16 - 26 .

叶豪 , 陶于兵 , 董镇鲛 , et al . 管壳式水合盐化学储热反应器内传热结构拓扑优化 [J ] . 西安交通大学学报 , 2024 , 58 ( 11 ): 78 - 86 .

YE Hao , TAO Yubing , DONG Zhenjiao , et al . Topology optimization of heat transfer structure in a shell-and-tube hydrated salt thermochemical heat storage reactor [J ] . Journal of Xi'an Jiaotong University , 2024 , 58 ( 11 ): 78 - 86 .

吴学红 , 栾林林 , 陈亚南 , et al . 可降解柔性相变薄膜的制备及其热性能 [J ] . 化工学报 , 2023 , 74 ( 04 ): 1818 - 26 .

WU Xuehong , LUAN Linlin , CHEN Yanan , et al . Preparation and thermal properties of biodegradable flexible phase-change films [J ] . CIESC Journal , 2023 , 74 ( 04 ): 1818 - 1826 .

YIN Q Q , ZHU G , WANG R K , et al . Enhancement of the thermal properties of the phase change composite of acid-base modified biochar/paraffin wax [J ] . Sol Energy Mater Sol Cells , 2024 , 269 : 10 .

贾凌云 , 刘文丽 , 樊荣 , et al . 制备纳米纤维素基复合相变材料的研究进展 [J ] . 中国造纸 , 2022 , 41 ( 10 ): 104 - 9 .

JIA Lingyun , LIU Wenli , FAN Rong , LIU Pengtao . Research progress in the preparation of nanocellulose-based composite phase-change materials [J ] . China Pulp & Paper , 2022 , 41 ( 10 ): 104 - 109 .

库尔班江·乌丝曼 , 史琳 , 戴晓业 . 纳米Al2O3/膨胀石墨/赤藓糖醇三元复合相变材料的综合性能评价 [J ] . 工程热物理学报 , 2025 , 46 ( 06 ): 1729 - 37 .

KUERBANJIANG Wusiman , SHI Lin , DAI Xiaoye . Comprehensive performance evaluation of nano-Al2O3/expanded graphite/erythritol ternary composite phase-change materials [J ] . Journal of Engineering Thermophysics , 2025 , 46 ( 06 ): 1729 - 1737 .

吴丽梅 , 王晔 , 罗茗遥 , et al . 二维蒙脱石纳米片对石蜡的包覆封装及其储热调温性能 [J ] . 硅酸盐学报 , 2022 , 50 ( 11 ): 2941 - 50 .

WU Limei , WANG Ye , LUO Mingyao , et al . Encapsulation of paraffin with two-dimensional montmorillonite nanosheets and its thermal energy storage and temperature regulation performance [J ] . Journal of the Chinese Ceramic Society , 2022 , 50 ( 11 ): 2941 - 2950 .

侯雪艳 , 周陇超 , 李佳慧 , et al . 基于石蜡@SiO2/聚苯胺相变微胶囊的储热/导电聚氨酯膜材料 [J ] . 延安大学学报(自然科学版) , 2025 , 44 ( 04 ): 46 - 53 .

HOU Xueyan , ZHOU Longchao , LI Jiahui , et al . Thermal energy storage/conductive polyurethane film based on paraffin@SiO2/polyaniline phase-change microcapsules [J ] . Journal of Yan'an University (Natural Science Edition) , 2025 , 44 ( 04 ): 46 - 53 .

张继宁 , 张鲜鲜 , 孙会峰 , et al . 秸秆热解炭化及还田应用过程碳足迹核算研究进展 [J ] . 应用与环境生物学报 , 2025 , 31 ( 09 ): 1499 - 512 .

ZHANG Jining , ZHANG Xianxian , SUN Huifeng , et al . Research progress in carbon footprint accounting during straw pyrolysis, carbonization and field application [J ] . Chinese Journal of Applied and Environmental Biology , 2025 , 31 ( 09 ): 1499 - 1512 .

MANDAL S , ISHAK S , ADNIN R J , et al . An approach to utilize date seeds biochar as waste material for thermal energy storage applications [J ] . J Energy Storage , 2023 , 68 : 10 .

ZHOU J H , FEI H , HE Q , et al . Structural characteristics and thermal performances of lauric-myristic- palmitic acid introduced into modified water hyacinth porous biochar for thermal energy storage [J ] . Sci Total Environ , 2023 , 882 : 12 .

THOMMES M , KANEKO K , NEIMARK A V , et al . Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report) [J ] . Pure Appl Chem , 2015 , 87 ( 9-10 ): 1051 - 69 .

LUO Y , XIONG S Y , HUANG J T , et al . Preparation, characterization and performance of paraffin/sepiolite composites as novel shape-stabilized phase change materials for thermal energy storage [J ] . Sol Energy Mater Sol Cells , 2021 , 231 : 12 .

CHUNG O , JEONG S G , KIM S . Preparation of energy efficient paraffinic PCMs/expanded vermiculite and perlite composites for energy saving in buildings [J ] . Sol Energy Mater Sol Cells , 2015 , 137 : 107 - 12 .

QIAN T T , LI J H , MA H W , et al . The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol-gel method [J ] . Sol Energy Mater Sol Cells , 2015 , 132 : 29 - 39 .

BORDOLOI U , DAS D , KASHYAP D , et al . Synthesis and comparative analysis of biochar based form-stable phase change materials for thermal management of buildings [J ] . J Energy Storage , 2022 , 55 : 14 .

LI J W , MA X J , ZHANG W , et al . Multidimensional nanofiller-enhanced paraffin-based ternary composite phase change materials: Performance characterization and experimental validation [J ] . J Alloy Compd , 2026 , 1056 : 15 .

ADNIN R J , LEE H S . Advancing Thermal Energy Storage: Synthesis and Thermal Performance of Silica-Encapsulated Paraffin PCMs [J ] . Molecules , 2025 , 30 ( 8 ): 20 .

LV L Q , WANG J K , JI M T , et al . Effect of structural characteristics and surface functional groups of biochar on thermal properties of different organic phase change materials: Dominant encapsulation mechanisms [J ] . Renew Energy , 2022 , 195 : 1238 - 52 .

WADEE A , WALKER P , MCCULLEN N , et al . The effect of thermal cycling on the thermal and chemical stability of paraffin phase change materials (PCMs) composites [J ] . Mater Struct , 2025 , 58 ( 1 ): 14 .

HU C P , FAROOQ U , LI B S , et al . Insight into the effects of rhamnolipid biosurfactant on biochar colloid-mediated transport of dinotefuran in saturated soil porous media [J ] . Colloid Surf A-Physicochem Eng Asp , 2026 , 728 : 11 .

ZHANG M , KANG Y K , RAN J , et al . Combined Effects of Biochar and Rhamnolipid on Phenanthrene Biodegradation in Agricultural Soil: Bioavailability and Microbial Community Dynamics [J ] . Agriculture-Basel , 2025 , 15 ( 11 ): 22 .

WEI Z , WANG J J , MENG Y L , et al . Potential use of biochar and rhamnolipid biosurfactant for remediation of crude oil-contaminated coastal wetland soil: Ecotoxicity assessment [J ] . Chemosphere , 2020 , 253 : 9 .

COSTA S , DE SOUZA S R , NITSCHKE M , et al . Wettability of Aqueous Rhamnolipids Solutions Produced by <i>Pseudomonas aeruginosa</i> LBI [J ] . J Surfactants Deterg , 2009 , 12 ( 2 ): 125 - 30 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

Mechanism and Optimal Control Strategy for Hysteresis in Rapid Dehumidification Response of Indirect Thermal Systems in Electric Vehicles

A Fast Calculation Method for Thermal Flow Fields in Transformer Windings Based on PI-DeepONet

Influence of Structural Parameters on the Summer Operational Characteristics of a Three-Tower-in-One Indirect Air-Cooling System

Numerical Simulation of the Energy Conversion Process in Thermoacoustic Engines with Different Stack Materials

Related Author

No data

Related Institution

No data

⁰