Porous polyvinyl alcohol/graphene oxide composite film for strain sensing and energy-storage applications
Cui X. Guo J. Araby S. Abbassi F. Zhang C. Diaby A.L. Meng Q.
8 October 2022Institute of Physics
Nanotechnology
2022#33Issue 41
In this study, a flexible porous polyvinyl alcohol (PVA)/graphene oxide (GO) composite film was developed and tested for flexible strain sensing and energy-storage applications. Morphology and mechanical properties were studied; tensile strength and Youngs modulus increased by 225% and 86.88%, respectively, at 0.5 wt% GO. The PVA/GO film possesses exceptional sensing ability to various mechanical strains, such as tension, compression, bending, and torsion. For example, the gauge factor of the PVA/GO film as a tensile-strain sensor was measured as 2.46 (246%). Under compression loads, the PVA/GO composite film showed piezoresistive and capacitive strain-sensing characteristics. Under 5 kPa of compression load, the relative resistance increased by 81% with a 100 msec response time; the relative capacitance increased by 160% with a 120 msec response time. The PVA/GO strain sensor exhibited high durability and reliability over 20 × 103 cycles of tensile strain and bending at 3.33 Hz. Moreover, the PVA/GO composite film showed good electrochemical properties due to its porous structure; the maximum capacitance was 124.7 F g-1 at 0.5 wt% GO. After 20 × 103 charging-discharging cycles, the capacitance retention rate was 94.45%, representing high stable capacitance performance. The results show that electrically conductive porous PVA nanocomposite films are promising candidates for strain sensing and energy-storage devices.
graphene oxide , polyvinyl alcohol , porous structure , specific capacitance , strain sensor
Text of the article Перейти на текст статьи
College of Civil Aviation, Shenyang Aerospace University, Shenyang, 110136, China
Department of Mechanical and Aerospace Engineering, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Department of Mechanical Engineering, Faculty of Engineering, Benha University, Benha, Egypt
College of Engineering and Technology, American University of the Middle East, Kuwait
UniSA Online (STEM), University of South Australia, 5000, SA, Australia
College of Aerospace Engineering, Shenyang Aerospace University, Shenyang, 110136, China
College of Civil Aviation
Department of Mechanical and Aerospace Engineering
Department of Mechanical Engineering
College of Engineering and Technology
UniSA Online (STEM)
College of Aerospace Engineering
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026