Novel Binders for Aqueous Electrode Processing of Electrochemical Capacitors.

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Tác giả: María Arnaiz, Agathe Bouvet-Marchand, Daniel Carriazo, Marcial Fernandez, Silvia Martin-Fuentes, Maria C Morant-Miñana, Antoine Suty, Aitor Villaverde

Ngôn ngữ: eng

Ký hiệu phân loại: 302.222 Nonverbal communication

Thông tin xuất bản: Germany : ChemSusChem , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 735884

This work studies the use of epoxy and polyurethane formulations as binders for the aqueous processing of activated carbon (AC) electrodes used as positive and negative electrodes in Electrochemical Double Layer Capacitors (EDLCs). The use of amine and carbodiimide as crosslinkers is also evaluated. The mechanical properties of those different binders have been investigated, looking towards aqueous processable and flexible electrodes. Microstructural analysis of the fabricated AC electrodes has been carried out to understand the pore-blocking effect exhibited by certain polymers. Furthermore, electrochemical characterization of all the systems has been performed by cyclic voltammetry, electrochemical impedance spectroscopy, and constant current charge/discharge measurements at different current densities. The obtained results show that polyurethane (PU) outperforms in terms of energy and power density the carboxymethyl cellulose:styrene butadiene rubber (CMC : SBR) reference system. Moreover, the studied polyurethanes maintain close to 100 % of their initial capacitance after 2500 cycles under a current density of 5 A g
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