The role of carbon in elevating metal hexacyanoferrates as multifunctional cathode materials: Recent breakthroughs

Hexacyanoferrates (HCF) featuring various transition metals have garnered significant attention in cathode-related research endeavors, due to their cost-effectiveness across diverse systems. Concurrently, there has been a notable surge in the exploration of carbon materials as potential alternatives aimed at enhancing device performance, leveraging their exceptional electrical and chemical characteristics. The integration of HCF and carbon materials emerges as a promising strategy, poised to bolster critical parameters such as cycling stability, energy density, and reversibility, while concurrently mitigating device costs through the utilization of abundant elements. This concise review delves into recent investigations conducted by researchers utilizing this amalgamation of materials for cathode preparation and subsequent deployment in batteries, supercapacitors, and capacitive deionization. By examining these recent findings, this paper aims to provide insights into the synergistic effects and performance enhancements achieved through the strategic combination of HCF and carbon materials in various electrochemical applications.