Multifunctional Graphene-Based Composite Sponge
1
College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, China
2
College of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China
*
Authors to whom correspondence should be addressed.
Sensors 2020, 20(2), 329; https://doi.org/10.3390/s20020329
Received: 14 October 2019
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Revised: 26 December 2019
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Accepted: 2 January 2020
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Published: 7 January 2020
(This article belongs to the Special Issue Applications of Graphene-Based Materials in Sensors)
Although graphene has been widely used as a nano-filler to enhance the conductivity of porous materials, it is still an unsatisfactory requirement to prepare graphene-based sponge porous materials by simple and low-cost methods to enhance their mechanical properties and make them have good sensing and capacitive properties. Graphene platelets (GnPs) were prepared by the thermal expansion method. Graphene-based sponge porous materials were prepared by a simple method. A flexible sensor was formed and supercapacitors were assembled. Compared with other graphene-based composites, the graphene-based composite sponge has good electrical response under bending and torsion loading. Under 180° bending and torsion loading, the maximum resistance change rate can reach 13.9% and 52.5%, respectively. The linearity under tension is 0.01. The mechanical properties and capacitance properties of the sponge nanocomposites were optimized when the filler fraction was 1.43 wt.%. The tensile strength was 0.236 MPa and capacitance was 21.4 F/g. In cycles, the capacitance retention rate is 94.45%. The experimental results show that the graphene-based sponge porous material can be used as a multifunctional flexible sensor and supercapacitor, and it is a promising and multifunctional porous nanocomposite material.
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MDPI and ACS Style
Cui, X.; Tian, J.; Yu, Y.; Chand, A.; Zhang, S.; Meng, Q.; Li, X.; Wang, S. Multifunctional Graphene-Based Composite Sponge. Sensors 2020, 20, 329. https://doi.org/10.3390/s20020329
AMA Style
Cui X, Tian J, Yu Y, Chand A, Zhang S, Meng Q, Li X, Wang S. Multifunctional Graphene-Based Composite Sponge. Sensors. 2020; 20(2):329. https://doi.org/10.3390/s20020329
Chicago/Turabian StyleCui, Xu, Jiayu Tian, Yin Yu, Aron Chand, Shuocheng Zhang, Qingshi Meng, Xiaodong Li, and Shuo Wang. 2020. "Multifunctional Graphene-Based Composite Sponge" Sensors 20, no. 2: 329. https://doi.org/10.3390/s20020329
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