Researchers at Japan’s Tohoku University have developed a prototype calcium battery with a long service life of more than 500 charge-discharge cycles. The battery was developed using a hydride-based electrolyte and a copper sulfide nanoparticle/carbon composite cathode.
To overcome these limitations, researchers at Japan’s Tohoku University recently developed a prototype rechargeable calcium metal battery capable of charging and discharging over 500 cycles. The battery was developed with a hydride-based electrolyte and copper sulfide (CuS) nanoparticle/carbon composite cathode. It showed better performance than state-of-the-art calcium metal batteries in both speed and lifetime.
Combination of CuS/C nanocomposite and tailored Ca(CB) monocarborane electrolyte solution11B12)2 in dimethoxyethane/tetrahydrofuran (DME/THF) enabled a calcium metal battery with 92% capacity retention based on 10th cycle capacity.
“This study confirms the feasibility of long-term operation of Ca metal anodes and may accelerate the development of Ca metal batteries,” the researchers wrote in the paper, “Calcium metal batteries with long lifetimes using hydride-based electrolyte and copper sulfide electrode.” which was recently published in Advanced science.