天然粘土矿物材料在质子交换膜中的应用进展
Application progress of natural clays in proton exchange membrane
王贝 1凌志伟 1周依琳 1付旭东 1张荣 1胡圣飞 1李骁 2刘清亭1
作者信息
- 1. 湖北工业大学 绿色轻工材料湖北省重点实验室,武汉 430068;湖北工业大学 材料与化学工程学院,武汉 430068
- 2. 湖北工业大学 绿色轻工材料湖北省重点实验室,武汉 430068;武汉众宇动力系统科技有限公司,武汉 430079
- 折叠
摘要
质子交换膜(PEM)作为聚合物电解质燃料电池关键部件直接影响着电池性能,拓宽其运行温度和湿度范围有利于简化燃料电池水、热管理设计,从而促进电池小型化和降低成本.近些年来,开发天然粘土/聚合物复合膜已成为提升传统PEM性能和拓宽其应用温、湿度范围的重要途径之一.天然粘土矿物多为含水层状硅酸盐化合物,特殊的孔、层结构和纳米尺度赋予其较大的比表面积和表面效应,其表面和层间富含的羟基在提高复合膜机械强度的同时固定了传质介质,从而在复合膜中构建新的质子传导通道用以提高膜的性能.从纳米微观多个维度综述了不同类别粘土矿物的结构与性能,以及其在质子交换膜中的研究进展,对天然粘土矿物复合质子交换膜的研究进行了总结与展望.
Abstract
As a key component of polymer electrolyte fuel cells,the proton exchange membrane(PEM)directly im-pacts cell performance.Expanding its operational temperature and humidity range is advantageous for simplifying fuel cell water and thermal management designs,thereby promoting miniaturization and cost reduction.In recent years,the development of polymer composite membranes based on natural clay has emerged as a crucial avenue for enhancing traditional PEM performance and broadening its applicability across varying environmental condi-tions.Natural clay minerals predominantly consist of hydrated layered silicate compounds,characterized by unique pore and layer structures at the nanoscale,endowing them with substantial specific surface area and sur-face effects.The abundance of hydroxyl groups on their surfaces and interlayers not only enhances the mechanical strength of composite membranes but also immobilizes mass transport media.Consequently,these materials facili-tate the creation of novel proton-conductive pathways within the composite membrane,thereby elevating mem-brane performance.We comprehensively review,from a nanoscale perspective,various categories of clay minerals,elucidating their structural and performance attributes.Furthermore,we provide a comprehensive summary and future prospects of research advancements in natural clay mineral-composite proton exchange membranes.
关键词
天然粘土矿物/质子交换膜/复合膜/纳米尺度/燃料电池Key words
natural clays/proton exchange membrane/composite membrane/nanoscale/fuel cells引用本文复制引用
基金项目
绿色轻工材料湖北省重点实验室项目(202307B04)
出版年
2024
NETL
NSTL
万方数据