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High-performance humidity sensors based on SnO2/Ti3C2Tx nanocomposites coated on porous graphene electrodes
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DOI：10.1016/j.ceramint.2024.08.224.png)
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Abstract
En 中文
This study proposes the synthesis of SnO2/Ti3C2Tx composites on porous graphene electrodes (PGEs) for high-performance humidity sensors. In the heterojunction structure of SnO2/Ti3C2Tx composites, SnO2 nanoparticles prevented the layered structure of Ti3C2Tx to collapse and restack. Moreover, the high specific surface area of the SnO2/Ti3C2Tx composites provided more adsorption sites that improved their response. Porous graphene was fabricated by a fiber laser-induced process on the polyimide film as an electrode layer for flexible humidity sensors. The characteristics of the SnO2/Ti3C2Tx composites and PGEs were examined and investigated. SnO2/Ti3C2Tx composites were drop-cast on PGEs to fabricate the humidity sensor. Furthermore, the response of humidity sensors was tested in various RHs. The performance of the proposed humidity sensor demonstrated a wide detection range of 11-97 % RH, low hysteresis of 2.8 % RH, low response/recovery times of 14/49 s, high sensitivity of 862.19 k Omega/%RH, excellent long-time stability and repeatability, and good flexibility. In the future, the proposed sensor can be widely applied in human respiration monitoring, non-contact switch, and detection of volatile organic compounds.
Keywords:
Porous graphene electrode
Flexible humidity sensor
High sensitivity
Good flexibility
SnO2/Ti(3)C(2)T(x)composites
Porous graphene electrode
Flexible humidity sensor
High sensitivity
Good flexibility
Journal
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5.6
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5.0W
Citations:
15.5W
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Cited Papers