Amino-functionalized and Na+ pre-intercalated three-dimensional Ti_(3)C_(2)T_(x) film aerogel with excellent electrochemical performances for supercapacitor  

作　　者：Xinhui Jin Dejie Mo Lirong Feng Dong Wang Baolian Su Xiaohui Guo 

机构地区：[1]Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education,The College of Chemistry and Materials Science,Northwest University,Xi’an 710069,China [2]Department of inorganic chemistry,University of Namur,61 rue de Bruxelles,B-5000 Namur,Belgium

出　　处：《Nano Research》2025年第2期328-336,共9页纳米研究(英文版)

基　　金：This work was supported by the Key projects of intergovernmental international cooperation in key R&D programs of the Ministry of science and technology of China(No.2021YFE0115800);the National Science Funding Committee of China(No.U20A20250);the programs of the science and technology of Yulin City(No.CXY 2023-ZX04);the funding support from Shccig-Qinling Program.

摘　　要：Precise modulation of the pore structure and modification of the surface groups(–NH_(2))of MXene aerogels by the solid foaming method in combination with Na^(+)pre intercalation can significantly increase the layer spacing and change the electronic structure of MXene,thereby significantly optimizing its electrochemical performance.The three dimensional(3D)network structure provides numerous active sites on the surface of MXene and provides more ion transfer pathways and the large layer spacing allows electrolyte ions fast transport and the surface groups provide more active sites for the pseudocapacitive reaction.As a result,the prepared Na Ti_(3)C_(2)T_(x)(where T is–O,–OH,–F,and/or–NH_(2),and x represents the number of such groups)film aerogel delivers a high mass specific capacitance of 560 F·g^(-1) and excellent cycling performance of 94.5%capacitance retention after 12,000 cycles in 0.5 M H_(2)SO_(4).In addition,the flexible all-solid state supercapacitor(ASC)composed of MXene film electrodes has excellent specific capacitance~277 F·g^(-1) and high energy density~52.8 Wh·kg^(-1) at 1600 W·kg^(-1).Therefore,this work not only proposes a feasible synthetic method that can precisely regulate the pore structure and surface features of film aerogels,but also demonstrates the broad application prospects of aerogel materials in wearable power devices.

关 键 词：MXene AEROGEL INTERCALATION SUPERCAPACITORS capacitance 

分 类 号：TM53[电气工程—电器] TQ427.2[化学工程]