Ultrathin cellulose nanofiber/carbon nanotube/Ti3C2Tx film for electromagnetic interference shielding and energy storage

Beibei Wang; Yanchen Li; Weiye Zhang; Jingmeng Sun; Junqi Zhao; Yuzhi Xu; Yi Liu; Hongwu Guo; Daihui Zhang

doi:10.1016/j.carbpol.2022.119302

Ultrathin cellulose nanofiber/carbon nanotube/Ti₃C₂T_x film for electromagnetic interference shielding and energy storage

Carbohydr Polym. 2022 Jun 15:286:119302. doi: 10.1016/j.carbpol.2022.119302. Epub 2022 Mar 2.

Authors

Beibei Wang¹, Yanchen Li¹, Weiye Zhang¹, Jingmeng Sun¹, Junqi Zhao¹, Yuzhi Xu², Yi Liu³, Hongwu Guo⁴, Daihui Zhang⁵

Affiliations

¹ Key Laboratory of Wood Materials Science and Application of Ministry of Education, Beijing Forestry University, Beijing 100083, China; Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
² Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, Jiangsu, China.
³ Key Laboratory of Wood Materials Science and Application of Ministry of Education, Beijing Forestry University, Beijing 100083, China; Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China. Electronic address: liuyichina@bjfu.edu.cn.
⁴ Key Laboratory of Wood Materials Science and Application of Ministry of Education, Beijing Forestry University, Beijing 100083, China; Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China. Electronic address: guohongwu_305@bjfu.edu.cn.
⁵ Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, Jiangsu, China. Electronic address: Daihui.zhang@mail.mcgill.ca.

PMID: 35337513
DOI: 10.1016/j.carbpol.2022.119302

Abstract

Controllable fabrication of lightweight, highly conductive, and flexible films is important to simultaneously achieve excellent electromagnetic interference (EMI) shielding and high-rate energy storage. Herein, ultrathin, flexible, and conductive (up to 365,000 ± 5000 S m^-1) TOCNFs/CNT/Ti₃C₂T_x hybrid films were fabricated by a facile vacuum-filtration. The obtained films with 60 wt% Ti₃C₂T_x content exhibited a high specific EMI SE of 9316.4 ± 205.32 dB cm² g^-1, which was comparable to most of the other carbon- and MXene- based materials synthesized by complex steps. Additionally, the porous structure contributed to exposing more active sites and providing efficient transport of electrolyte ions. Consequently, the hybrid films showed a high areal capacitance and high specific capacitance of 537 mF cm^-2 and 279.7 F g^-1 at 0.3 mA cm^-2, respectively, together with impressive stability of 93.1% after 8000 cycles. This work provides an effective strategy to synthesize high-performance conductive films for applications in wearable or portable electronic devices.

Keywords: Carbon nanotube; Cellulose nanofiber; Electrodes; Electromagnetic interference shielding; MXene.