摘要
本文开创性地研制出一种新型的相变材料(PCM)。通过分子极性调整、低温溶剂热自组装及智能温区调节等技术,有效解决了传统PCM存在的分相合成高耗能和温区固定等技术难题。该材料借助动态氢键网络,使无机盐复合体系在历经5 000次相变循环后彻底避免分相情况,且相变焓保持率高于98%。创新的低温合成工艺(温度≤80℃)与传统的熔融法相比,能耗降低了60%,使材料具备0688 W/(m·K)的高导热系数。这种PCM能够在-10℃至80℃的宽温域内精确设定相变温度,其导热系数随着温度自动提高,控温精度提升至±03℃。在储能场景的快充过程中,该PCM可将电池最高温度控制在45℃以下(温差<15℃),使电池循环寿命提升50%。在化学电池储能和冷链等应用场景中,该材料也显著提升了系统的能源效率与工况温度稳定性。本研究为多种场景下的热管理系统提供了高稳定性、低能耗与智能化的解决方案,具有重要的工程应用价值与广阔的市场前景。
This study pioneers the development of a novel phase change material(PCM).By employing techniques including molecular polarity modulation,low-temperature solvothermal selfassembly,and temperature-zone regulation,it comprehensively addresses technical challenges in traditional PCM such as phase fault,high energy consumption in synthesis,and fixed temperature zones.Leveraging a dynamic hydrogen-bonding network,this material allows an inorganic salt composite system to completely avoid phase separation after 5000 times cycles,while maintaining a phase change enthalpy retention rate exceeding 98%.The innovative low-temperature synthesis process(≤80℃)reduces energy consumption by 60%compared to conventional melting methods and endows the material with a high thermal conductivity of 0.688 W/(m·K).This PCM can precisely set phase change temperatures across a wide temperature range of-10 to 80℃,with its thermal conductivity automatically increasing as temperature rises,improving temperature control accuracy to±0.3℃.During fast-charging in energy storage applications,the PCM maximums battery temperature below 45℃(with a temperature differential under 1.5℃),extending cycle life by 50%.During fast charging in energy storage applications,the PCM maintains battery temperatures below 45℃(with a temperature difference<1.5℃),extending battery cycle life by 50%.In applications such as chemical battery storage and cold chain systems,the material significantly enhances system energy efficiency and operational temperature stability.This research provides a highly stable,low-energy,and intelligent solution for thermal management systems across multiple scenarios,demonstrating significant engineering value and broad market potential.
作者
陈涧涵
陈芗昱
陆凌瑞
CHEN Jianhan;CHEN Xiangyu;LU Lingrui(Suzhou Mai Dao Energy Technology Co.,Ltd.,Suzhou,Jiangsu Province,215104,China)
出处
《电池工业》
2025年第6期481-487,共7页
Chinese Battery Industry
关键词
相变材料
低温合成
热管理
相变焓
能源效率
phase change materials
low-temperature synthesis
thermal management
phase change enthalpy
energy efficiency
