Study of the influence of the type of pores present in the electrodes on the behaviour of a SWAGELOK-type supercapacitor

• DOI: 10.1016/j.est.2023.107670
• Publication Date: 2023-05-20T21:34:41Z
• Authors: Jesús M. Rodrígue...; Laura Mendoza-Cerezo; Alfonso C. Marcos...; Juan P. Carrasco-...; A. Macías-García
• Keywords: Carbon fibers

The sharp increase in energy consumption recent years has increased the demand for new storage systems or improvement of existing ones. Supercapacitors are answer to this great challenge needed by any industrialized society. In work, improve system these supercapacitors, composition carbon-based electrodes been modified adding carbon carbonaceous materials and influence porous texture (porosity porosity distribution) on electrodes. Thus, a commercial activated electrode PCO-1000 was structured carbons TEG, TEG-B92, black V3. For purpose, three (commercial carbon) base were prepared, which 5 % Teflon added as binder TEG (structured carbon), TEG-B92 (92 h heat-treated V3 (carbon black), provide with structures, well graphitic structures separation between lamellar layers. (TEG TEG-B92) have formed interlamellar layers at spacing distances micro, macroporous pore distributions versus meso-macroporous distributions. Furthermore, selected it distribution (meso-macroporous) greater than 50 Å is electrochemically accessible aqueous solutions H2SO4, an organic medium large solvated ions not small pores. supercapacitor prepared basis (E-V3), best performing, capacity, power, parameters far superior other samples. This seems indicate that E-V3 supercapacitors varied structure perform better those predominantly micropore distribution. It be deduced wide mesopores present favour diffusion inside carbons. conclusion, resistance cell strongly dependent electrolyte used, size diffuses, pores, so characteristics material must considered together separately. Finally, study could importance fabrication certain predominance macropores achieve important capacities type their application hybrid electric vehicles, computers, uninterruptible power supply (UPS), motor starters, etc.