Holocellulose Nanofibril-Assisted Intercalation and Stabilization of Ti3C2T xMXene Inks for Multifunctional Sensing and EMI Shielding Applications

Yian Chen, Yuehu Li, Yu Liu, Pan Chen, Cunzhi Zhang, Haisong Qi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

2D transition-metal carbide/nitride (MXene)-based conductive inks have received tremendous attention due to their high electrical conductivity and other fascinating properties. However, the unstability of MXene-based inks, low fabrication yield of MXene flakes, and poor mechanical properties of printed products strongly limit the proper and large-scale printing of MXene patterns. Here, functioning as a dispersant, an intercalation agent, and reinforcement, sulfated holocellulose nanofibrils (HCNFs) with a unique "core-shell"structure are conducive to the fabrication, storage, and subsequent printing of MXene inks. The MXene/HCNF (MH) ink with high yield (97.2%), good stability, and good homogeneity exhibits excellent printing performance (high resolution and good coverage). It could print various products with adjustable thicknesses and electrical conductivity properties on different substrates. The products printed by the MH ink can be applied as multifunctional sensing materials responding to multiple external stimuli, such as stress/strain, blowing, humidity, and temperature. Furthermore, the resulting products also display a high electromagnetic interference (EMI) shielding effectiveness (SE) of 54.3 dB at a shallow thickness of 100 μm and an excellent specific EMI SE of SSE/t of 7159 dB cm2 g-1.

Original languageEnglish
Pages (from-to)36221-36231
Number of pages11
JournalACS applied materials & interfaces
Volume13
Issue number30
DOIs
Publication statusPublished - 4 Aug 2021

Keywords

  • EMI shielding
  • Holocellulose
  • MXene
  • intercalation
  • multifunctional sensor
  • printing inks

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Chen, Y., Li, Y., Liu, Y., Chen, P., Zhang, C., & Qi, H. (2021). Holocellulose Nanofibril-Assisted Intercalation and Stabilization of Ti3C2T xMXene Inks for Multifunctional Sensing and EMI Shielding Applications. ACS applied materials & interfaces, 13(30), 36221-36231. https://doi.org/10.1021/acsami.1c10583