微米级三维多孔高纯铝材料的制备与特性研究  

Preparation and characterization of micron-sized 3D porous high-purity aluminum

作　　者：张茂贵 王君 汤水 贾明 刘芳洋 蒋良兴 艾亮 艾燕 ZHANG Maogui;WANG Jun;TANG Shui;JIA Ming;LIU Fangyang;JIANG Liangxing;AI Liang;AI Yan(School of Metallurgy and Environment,Centre South University,Changsha 410083,China;Hunan Aihua Group Co.Ltd.,Yiyang 413000,China;Key Laboratory of All-Solid-State Energy Storage Materials and Devices of Hunan Province,Hunan City University,Yiyang 413000,China)

机构地区：[1]中南大学冶金与环境学院,湖南长沙410083 [2]湖南艾华集团股份有限公司,湖南益阳413000 [3]全固态储能材料与器件湖南省重点实验室,湖南城市学院,湖南益阳413000

出　　处：《中南大学学报（自然科学版）》2020年第11期3093-3100,共8页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51774343);国家重点研究发展计划项目(2018YFB104200)。

摘　　要：采用浆料涂敷−烧结法制备一种微米级三维多孔高纯铝材料,研究黏结剂用量对样品电化学活性表面积AECS以及机械性能的影响。研究结果表明:通过将微米级铝粉与溶剂N-甲基-2-吡咯烷酮(NMP)、黏结剂聚偏氟乙烯(PVDF)均匀混合,配制成黏度适中的浆料,将浆料双面涂敷在铝光箔上并加热固化,再经过烧结后,可获得AECS高于223.9 cm^2、折弯次数为88次、抗拉强度为1.5 kN/m的微米级三维多孔高纯铝材料;PVDF质量分数与三维多孔高纯铝材料的电化学活性表面积呈负相关,对机械性能影响较小。A micron-sized 3D porous high-purity aluminum was prepared by the paste coating-sintering method,and the influence of the content of the binder on the electrochemically active surface area(AECS)and mechanical properties of the sample were studied.The results show that by mixing micron-sized aluminum powder with N-methyl-2-pyrrolidone(NMP)and polyvinylidene fluoride(PVDF)uniformly to prepare a paste with moderate viscosity,the paste is coated on both sides of an aluminum foil.After heat curing and sintering,a micron-scale 3D porous high-purity aluminum material with AECS higher than 223.9 cm^2,bending time of 88,and tensile strength of 1.5 kN/m is obtained.The mass fraction of PVDF is negatively correlated with AECS of the 3D porous high-purity aluminum and has less impact on mechanical properties.

关 键 词：多孔铝 浆料 烧结 机械性能 

分 类 号：TB31[一般工业技术—材料科学与工程]