Constructing conductive titanium carbide nanosheet (MXene) network on natural rubber foam framework for flexible strain sensor

Authors：Ding, Hongda; Luo, Zirong; Kong, Na; Li, Zhifeng; Zhao, Pengfei; Zhang, Jizhen^*; Tao, Jinlong^*

Source：Journal of Materials Science: Materials in Electronics , 2022, 33(19): 15563-15573.

DOI：10.1007/s10854-022-08462-9

• TI3C2TX MXENE
• COMPOSITES
• NANOCRYSTALS

Sensors, as one of the crucial components of wearable electronics, have attracted much attention due to their extensive application in healthcare, human-machine interfaces, electronic skins (E-skins), rehabilitation, and internet of things. However, there is still a challenge to fabricate flexible strain sensors with both good sensitivity and large working strain range. Herein, a facile, scalable, and low-cost strategy is developed to prepare highly sensitive strain sensors based on natural rubber foam and Ti3C2Tx nanosheeets (MXene/NR) by dip-coating method. The fabricated MXene/NR composite exhibits excellent strain sensitivity and large strain range. The gage factor of the MXene/NR composite reaches 14 in the strain range of 0-5% with a low pressure limitation of detection (435 Pa). Additionally, the sensing range is as large as 0-80% of strain and shows good stability during the pressing and relaxing cycles. It is demonstrated that the MXene/NR composite could be used to detect motions, such as finger pressing and step monitoring, suggesting it is a promising candidate for fabricating wearable electronics.

• Institution
  中国科学院