Industrial Requirements of Materials for Electrical Double Layer Capacitors: Impact on Current and Future Applications

Abstract

Abstract Electrical double layer capacitors (EDLCs) are nowadays considered one of the most important energy storage technologies. In recent years, great efforts have been made toward the development of novel materials, active and inactive, suitable for the realization of advanced EDLCs displaying higher performance, especially in terms of energy, compared to the state‐of‐the‐art devices. Nevertheless, the applicability of these materials in real devices and the industrial requirements related to the development of innovative EDLCs are not always properly addressed by the scientific community. This short review addresses these two fundamental aspects, with the aim to supply an updated set of information about the industrial requirements for the materials usable in commercial EDLCs. Additionally, the review also provides an updated overview about the present and estimated future market size of EDLCs as well as present and future applications of this technology addressing the market‐specific needs. This “application‐oriented” information is pivotal for a successful development and large‐scale production of advanced EDLCs.