Journal
ACS NANO
Volume 12, Issue 4, Pages 3209-3216Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.7b06909
Keywords
MXene; rGO; synergistic effect; aerogel; piezoresistance sensor
Categories
Funding
- National Natural Science Foundations of China [11374110, 11674113, 51371085]
- Key Laboratory of Automotive Power Train and Electronics (Hubei University of Automotive Technology)
- Analysis and Testing Center of HUST
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A piezoresistive sensor based on ultralight and superelastic aerogel is reported to fabricate MXene/reduced graphene oxide (MX/rGO) hybrid 3D structures and utilize their pressure-sensitive characteristics. The MX/rGO aerogel not only combines the rGO's large specific surface area and the NIXene's (Ti3C2Tx) high conductivity but also exhibits rich porous structure, which leads to performance better than that of single-component rGO or MXene in terms of the pressure sensor. The large nanosheets of rGO can prevent the poor oxidization of MXene by wrapping MXene inside the aerogel. More importantly, the piezoresistive sensor based on the MX/rGO aerogel shows extremely high sensitivity (22.56 kPa(-1)), fast response time (<200 ms), and good stability over 10 000 cycles. The piezoresistive sensor based on the MX/rGO hybrid 3D aerogel can easily capture the signal below 10 Pa, thus clearly testing the pulse of an adult at random. Based on its superior performance, it also demonstrates potential applications in measuring pressure distribution, distinguishing subtle strain, and monitoring healthy activity.
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