文献类型：期刊文献

英文题名：Impact of cellulose nanofibril modification on the electrochemical performance of Ti3C2Tx-based supercapacitors

作者：Yang, Zhengbang[1] Lu, Yi[2,3] He, Ming[1,2,4] Qi, Yue[5] Yang, Guihua[1] Chen, Jiachuan[1] Wang, Ying[1] Rojas, Orlando J.[2,4,6,7]

第一作者：Yang, Zhengbang

通信作者：He, M[1];Yang, GH[1];Wang, Y[1]

机构：[1]Qilu Univ Technol, Shandong Acad Sci, State Key Lab Green Papermaking & Resource Recycli, Jinan 250353, Peoples R China;[2]Univ British Columbia, Bioprod Inst, 2385 East Mall, Vancouver, BC V6T 1Z4, Canada;[3]Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China;[4]Univ British Columbia, Dept Chem & Biol Engn, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada;[5]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[6]Univ British Columbia, Dept Wood Sci, 2424 Main Mall 2900, Vancouver, BC V6T 1Z1, Canada;[7]Univ British Columbia, Dept Chem, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada

年份：2025

卷号：32

期号：12

起止页码：7131-7143

外文期刊名：CELLULOSE

收录：;EI(收录号：20252918796696);Scopus(收录号：2-s2.0-105010638278);WOS:【SCI-EXPANDED(收录号:WOS:001539464200001)】；

基金：This work was supported by the Shandong Provincial Natural Science Foundation (No. ZR2024MC189, No. ZR2022QE109), the Jinan Science and Technology Bureau project (No.20233046), the Program of China Scholarship Council (Grant No. 202408370137) and Shandong Province Education System Government Sponsored Study Abroad Program, Shandong Province Higher Education Youth Innovation and Technology Support Program (2024KJH047), Science, Education and Industry Innovation Pilot Project (2024ZDZX01) and the "Hundred Talents Program" of the Chinese Academy of Sciences.

语种：英文

外文关键词：Cellulose nanofibrils; Ti3C2Tx; Interfacial modulation; Electrodes; Supercapacitor

摘要：Two-dimensional MXenes (Ti3C2Tx) exhibit metallic conductivity and high capacitance, making them a promising electrode material for flexible supercapacitors. However, the self-stacking of Ti3C2Tx nanosheets hinders ion transport and diffusion, adversely affecting electrochemical performance. Here, we study the incorporation of one-dimensional (1D) cellulose nanofibrils (CNFs) with Ti3C2Tx via interfacial interactions to show the possibility of preventing the close packing of conductive nanosheets, improving electrolyte ion transport and enhancing the mechanical strength and robustness of the dried material, enabling the fabrication of flexible, self-supporting hybrid films. For this purpose, we consider the impact of surface-modified CNFs on the structure and performance of Ti3C2Tx composite electrodes. Sulfated CNFs (SCNFs) are evaluated as scaffolding materials and compared with unmodified CNFs and carboxymethylated CNFs (CMCNFs). The Ti3C2Tx/SCNF hybrid electrode is demonstrated to achieve a specific capacitance of 218.3 F g-1 at 1 A g-1 and stable charge/discharge cycling. A symmetric solid-state supercapacitor is assembled with Ti3C2Tx/SCNF hybrid electrodes and shown to deliver an excellent specific capacitance of 241.2 mF cm-2, an energy density of 12.3 mu Wh cm-2 at a power density of 148.4 mu W cm-2. Notably, the device maintains nearly constant capacitance under 180 degrees bending. Overall, this work highlights an effective approach for developing high-performance flexible electrodes, advancing the development of next-generation energy storage devices.