文献类型：期刊文献

英文题名：High Specific Surface Mxene (Ti3c2tx)/Carbon Nanotube/Cellulose Nanofiber Aerogel Film as a Free-Standingelectrode for Flexible Supercapacitors

作者：Lyu, Shaoyi[1] Chang, Huanjun[1] Zhang, Longfei[1] Wang, Siqun[2] Li, Shanming[1] Li, Shujun[3]

第一作者：Lyu, Shaoyi

机构：[1] Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China; [2] Center for Renewable Carbon, University of Tennessee, Knoxville, TN, 37996, United States; [3] Key Laboratory of Bio-based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin, 150040, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220111805)

语种：英文

外文关键词：Aerogels - Carbon nanofibers - Electrolytes - Nanocellulose - Porosity - Single-walled carbon nanotubes (SWCN) - Specific surface area - Supercapacitor - Suspensions (fluids) - Thermoelectric equipment - Transition metals

摘要：The transition metal carbonitrides (Mxenes) of two-dimensional layered structures are recent research topics in the field of supercapacitors. However, because Mxene is easy to self-stack, it affects its capacitance performance, and the lower strength limits its application in flexible electronic devices. To this end, one-dimensional cellulose nanofibers (CNF) and carboxylic single-walled carbon nanotubes (SWCNT) are used to intercalate and disperse Mxenes to obtain well-dispersed MXene/SWCNT/CNF aqueous suspension and its hybrid hydrogel, and further to obtain hybrid aerogel through supercritical drying. CNF with a high aspect ratio gives hybrid aerogel excellent porosity, high specific surface area (301.03 m2 g -1 ), good electrolyte infiltration, and gradely mechanical flexibility, while SWCNT confers high conductivity to hybrid aerogel film. We assemble the symmetrical all-solid-state flexible supercapacitor and interdigitated micro-supercapacitors using the aerogel film as a flexible electrode. Both have excellent electrochemical properties. The area specific capacity of the aerogel film electrode reaches 746.68 mF cm -2 and 244.50 mF cm -2 , respectively, and the electrochemical performance is unaffected when bending occurs. This work provides a preparation method of MXene with excellent porosity, high specific surface area, and eximious flexibility. It gives a new idea for applying flexible electronic devices based on MXene. ? 2022, The Authors. All rights reserved.