2025/11/04 by Petr Šálek, Manoj Karakoti, Sonal Gupta +9 · 1 voice
Materials Science · #Conducting polymers and applications #Supercapacitor Materials and Fabrication #biodegradable polymer synthesis and properties
paper · pdf · doi:10.1021/acsapm.5c03208
openalex created_date 2025/11/04 · openalex publication_date 2025/11/04 · openalex updated_date 2026/06/15
High Resolution Image Download MS PowerPoint Slide Polypyrrole (PPy) is a promising conducting polymer for supercapacitor electrodes, but its structural degradation during repeated cycling limits its long-term stability. Here, we report the design of a composite based on PPy chemically stabilized by hyper-cross-linked poly(styrene- co -divinylbenzene) (HPStDVB) microparticles (PPy/HPStDVB) working as a scaffold. This composite possesses a more compact structure, preventing interruptions in the conjugation of PPy. As a result, the PPy/HPStDVB electrode exhibits remarkable electrochemical durability, maintaining its capacitance over 20,000 charge–discharge cycles and demonstrating a dominant capacitive contribution (77.3%) in the hybrid supercapacitor cell. These more stable electrochemical properties of PPy on HPStDVB arise from the interactions of the HPStDVB backbone with PPy, resulting in a more stable structure due to less dynamic functional groups. This study introduces a simple yet efficient strategy for mechanically reinforced conducting-polymer electrodes, providing a new route toward durable, high-performance supercapacitors.