摘要
电能和热能作为生活生产中最大的供应端和消耗端,二者间的转换、存储与利用在能源体系里占据了重要的一环。因此,研发高效率的电热转换-存储功能材料,在能源、环境和气候危机频现的今天,具有重要的意义。相变材料的储热密度高、相变时吸放热而温度不变,在热能存储中具备独特的优势。然而大多数相变材料的本征低电导率与当下储能系统的功率要求不匹配,通过与导电材料结合得到电热转化的相变复合材料可以有效地改变这种情况。本文对电热转换相变材料最新研究进展进行了综述,从电热转换相变材料的功能机制、影响因素和应用三个方面,对添加导电填料、负载导电骨架或导电高分子聚合的复合相变材料进行了综述与比较。最终对此领域未来的研究方向和重点进行了展望。
As the largest supply end and demand end in daily production respectively,the conversion,storage and utilization of electric energy and thermal energy play an important role in energy systems.Therefore,it is of great significance to develop high-efficiency materials for electro-thermal conversion and storage,especially facing today's energy crises,environmental pollution and extreme climates.Among heat storage materials,phase change materials(PCMs)own unique advantages because of their high latent heat storage density and constant temperature during heat absorption and release.However,the low intrinsic conductivity of most PCMs does not match the large power requirements of current energy storage systems.This issue can be effectively improved by combining PCMs with conductive materials to obtain electrically heatable PCM composites.In this article,the latest research progress of electro-thermal conversion PCMs from three aspects of the functional mechanism,affecting factors and applications are systematically reviewed.Moreover,PCMs composited with conductive fillers,conductive framework and serving as conductive polymers are summarized and compared critically.Finally,this article points out the potential direction of future research and emphasizes the key points of this field.
作者
蒋昊洋
熊丰
覃木林
高嵩
何刘如懿
邹如强
Haoyang Jiang;Feng Xiong;Mulin Qin;Song Gao;Liuruyi He;Ruqiang Zou(School of Materials Science and Engineering,Peking University,Beijing 100871,China;Army Logistics Academy of PLA,Chongqing 401331,China)
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2023年第3期360-374,共15页
Progress in Chemistry
基金
陆军勤务学院青年科研资助项目(No.LQ-QN-202117)
国家重点研发计划(No.2020YFA0210701)资助。
关键词
相变材料
导电材料
封装
定向结构
电热转换效率
phase change materials
conductive material
package
oriented structure
electrothermal conversion efficiency
