An Aqueous Ca-ion Full Cell Comprising BaHCF Cathode and MCMB Anode

The capability of high-rate cycling and environmental benignity at less expensive defines the ingress of upcoming energy storage system. The urge of such system comes into the picture because today, the state-of-the-art lithium technology is ineffectual to improve its rapid-charging ability beyond a certain limit, in commercial scale. Here, we introduce reversible electrochemistry of Ca-ion full cell in conjunction with inexpensive aqueous electrolyte, 1 M aq. Ca(ClO4)(2). In the full cell, carbon cloth, barium hexacyanoferrate (BaHCF) and meso-carbon microbeads (MCMB) have been explored as the current collector, cathode and anode material, respectively. The full cell provides 40 mAh g(-1) capacity at 5C rate till 100 cycles. We believe, the investigation of this simple full cell at the early stage of Ca-ion battery will pave a fast transition in the forthcoming energy storage systems.