刻蚀时间及HF浓度对Ti_(3)C_(2)TxMXene形貌及性能的影响  

Effect of Etching Time and Concentration of Hydrofluoric Acid on Morphology and Performance of Ti_(3)C_(2)Tx MXene

作　　者：华艳会 张武[2] 丁明理 苏德生 HUA Yan-hui;ZHANG Wu;DING Ming-li;SU De-sheng(Engineering Training Center,Shenyang Ligong University,Shenyang,110159,P,R.China;School of Materials Science and Engineering,Shenyan Ligong University,Shenyang 110159,P,R.China;Liaoning Dantan Technology Group Co.,Ltd.Dandong,674307,P,R.China)

机构地区：[1]沈阳理工大学工程实践中心,辽宁沈阳110159 [2]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [3]辽宁丹炭科技集团有限公司,辽宁丹东674307

出　　处：《南方金属》2023年第3期4-8,共5页Southern Metals

摘　　要：研究了刻蚀时间及HF浓度对Ti_(3)C_(2)TxMXene微观形貌及其电化学性能的影响。实验结果表明:当刻蚀时间为20h时,颗粒表面呈现典型的风琴状形貌。当HF的浓度由5%增加至20%时,厚度较大的Ti_(3)C_(2)TxMXene形貌明显减少,表明增加浓度有利于铝的去除。刻蚀时间为5h和20h的样品的比电容分别为4.8F/g和39F/g。当HF的浓度从10%增加至20%时,对应样品的比电容由47F/g增加至62F/g。随着刻蚀时间和HF浓度的增加,样品的赝电容行为的比例明显增加。The effects of etching time and hydrofluoric acid concentration on the micro morphology and electrochemical properties of Ti_(3)C_(2)Tx MXene were studied.The experimental results show that when the etching time is 20 h,the particle surface presents a typical organ like morphology.When the concentration of hydrofluoric acid increases from 5%to 20%,the morphology of Ti_(3)C_(2)Tx MXene with larger thickness decreases significantly,indicating that increasing the concentration is beneficial to the removal of aluminum.The specific capacitance of the samples with etching time of 5h and 20h is 4.8 F/g and 39 F/g respectively.When the concentration of hydrofluoric acid increases from 10%to 20%,the specific capacitance of the corresponding sample increases from 47 F/g to 62 F/g.With the increase of etching time and hydrofluoric acid concentration,the proportion of pseudo capacitance behavior of the samples increased significantly.

关 键 词：刻蚀时间 Ti_(3)C_(2)TxMXene 微观形貌 电化学性能 

分 类 号：TB34[一般工业技术—材料科学与工程]