PAN基碳毡碳化过程中的结构演变及电化学特性  

Structural Evolution and Electrochemical Properties of PAN Based Carbon Felt During Carbonization

作　　者：张欢[1,2,3] 谭毅 罗旭东[2] 陈娜[2] ZHANG Huan1,2,3, TAN Yi1,3, LUO Xudong2, CHEN Na2(1. College of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. School of High Temperature Materials and Magnesium Resource Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; 3. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116024, Liaoning, Chin)

机构地区：[1]大连理工大学材料科学与工程学院,辽宁大连116024 [2]辽宁科技大学高温材料与镁资源工程学院,辽宁鞍山114051 [3]大连理工大学三柬材料改性教育部重点实验室,辽宁大连116024

出　　处：《硅酸盐学报》2018年第3期369-376,共8页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(51702144)资助

摘　　要：为获得钒电池正极材料的最佳碳化温度,提出了4种经由2阶段碳化获得聚丙烯腈基（PAN基）碳毡的方案,并对样品的结构演变和电化学性能进行了分析。结果表明：800～1 000℃是第1阶段碳化中纤维石墨网晶面快速扩大的温度区间,该阶段的碳化温度越高;而后在第2阶段碳化中获得的PAN基碳毡石墨化程度更高,尤其在经由1 200～1 400℃的第1阶段碳化后最为显著;由两段碳化温度分别在1 200和1 800℃获得的PAN基碳毡的电化学活性最高,可作为钒电池的正极材料。In order to obtain the optimum carbonization temperature of anode electrode materials for all vanadium redox battery, four schemes were proposed to obtain a polyacrylonitrile based carbon felt via two-stage carbonization. The structural evolution and electrochemical properties were investigated. The rapid expansion of fiber graphite network at the first stage of carbonization occurs at 800-1 000 ℃. The results show that a greater carbonization temperature at the first stage of carbonization gives a higher graphitization degree of polyacrylonitrile based carbon felt after the second stage of carbonization, especially at the first stage of carbonization temperature range from 1200 to 1400 ℃. The electrochemical activity of the polyacrylonitrile based carbon felt obtained in the two-stage carbonization at 1 200-1 800 ℃ is the maximum, which is suitable to be used as anode electrode materials for all vanadium redox battery.

关 键 词：聚丙烯腈基碳毡 碳化 钒电池 结构 电化学 

分 类 号：O646.5[理学—物理化学]