Stretchable supercapacitors have emerged as critical components in next-generation wearable electronics due to their high power density, long cycle life, and excellent electrochemical reversibility. Among various energy storage systems, supercapacitors based on carbon materials—particularly graphene and carbon nanotubes (CNTs)—have attracted significant attention owing to their large specific surface area, superior electrical conductivity, and mechanical flexibility. These properties enable the fabrication of electrodes that maintain structural integrity under repeated stretching, making them ideal candidates for integration into stretchable devices. The development of such supercapacitors typically involves constructing a sandwiched structure with a gel electrolyte encapsulated between two stretchable electrodes. In this configuration, the carbon-based electrode serves as both the conductive scaffold and the primary charge storage medium.
One prominent approach is the use of elastomer-composite electrodes, where carbon materials are embedded within flexible polymer matrices such as polydimethylsiloxane (PDMS) or acrylate rubber (ACM). For instance, a stretchable supercapacitor was fabricated using ACM/MWCNT composite electrodes prepared via chemical cross-linking, which exhibited a high conductivity of 9.6 S cm⁻¹ and a stretchability exceeding 150%. The resulting device delivered an energy density of 2.14 mWh cm⁻³ and maintained over 95% of its initial capacitance after 500 stretching cycles at 50% strain. Similarly, another system employed CNT/PDMS composite films directly transferred onto elastic substrates, enabling stable performance even after 100 cycles of 30% stretching without capacity loss. While these composites offer ease of fabrication and good electrochemical stability, their strain tolerance remains limited, typically below 100%, due to the constrained deformation of the rigid carbon fillers within the elastomer matrix.Chlorambucil (Standard) Epigenetic Reader Domain
To overcome these limitations, geometrically structured designs have been introduced to significantly enhance stretchability. Wavy structures, created by pre-stretching a freestanding CNT or graphene film before bonding it to an elastomer substrate, allow for large-area deformation through controlled buckling. When released, the film forms a sinusoidal pattern capable of accommodating strains up to 1000% without breaking the conductive network. This design was successfully applied in a supercapacitor using Laponite/graphene oxide hydrogel as the electrolyte, demonstrating nearly unchanged cyclic voltammograms across a 0–1000% strain range. Serpentine structures, inspired by photolithography techniques, utilize interwoven metallic wires arranged in repeating loops. These configurations deform elastically during stretching, preserving electrical continuity and allowing the device to withstand up to 30% strain with minimal degradation in performance. Kirigami-patterned electrodes, derived from paper-cutting principles, introduce periodic slits in the carbon layer to form bridge-like segments that elongate under tension. A kirigami-CNT/MnO₂ supercapacitor achieved a maximum strain of 400% with no noticeable decline in capacitance after 10,000 cycles.RSAD2 Antibody In stock
Fiber-based architectures represent another promising avenue, particularly for textile-integrated applications.PMID:35217964 By coaxially wrapping CNT sheets around an elastic fiber core and sandwiching a PVA/H₃PO₄ gel electrolyte, researchers developed a stretchable fiber supercapacitor capable of enduring 100% strain over 100 cycles while retaining 95% of its capacitance. Further improvements were made by incorporating conductive polymers like polyaniline (PANI), leading to a specific capacitance of 79.4 F g⁻¹ after 5000 cycles at 300% strain. These advancements illustrate how structural engineering enables exceptional mechanical robustness without compromising electrochemical function. Overall, the synergy between advanced carbon materials and innovative geometries has paved the way for highly stretchable supercapacitors suitable for real-world wearable applications, although challenges remain in achieving uniform performance across diverse motion patterns and environmental conditions.MedChemExpress (MCE) offers a wide range of high-quality research chemicals and biochemicals (novel life-science reagents, reference compounds and natural compounds) for scientific use. We have professionally experienced and friendly staff to meet your needs. We are a competent and trustworthy partner for your research and scientific projects.Related websites: https://www.medchemexpress.com