Comprehensive review on gum-based electrolytes for energy applications: current status and future projection

Recently, biomaterials have attracted much attention, as they are abundant, naturally available, and reused. In particular, combination of biomaterials together with other components in the energy storage system has resulted in significant research advances as well as noticeable results. Gum-based electrolytes have been researched heavily in the recent years because of easy modulation of their physicochemical properties, bio-friendly characteristics, and abundance. In this review, we investigate and summarize some of the state-of-the-art research works on gum-based electrolytes, their applications, and future perspective on the gum electrolyte research. Different types of gums were used as electrolytes, and they were used in supercapacitors, zinc-ion batteries, and other types of energy-related applications. Through this focused mini-review article, it is expected that more researchers can delve into the core issues of energy storage system as well as coming up with novel ideas that implement gum electrolytes in a more sustainable, practical, and advanced way.