The electrolyte demonstrated markedly improved electrochemical performances such as high conductivity and high electrochemical stabilities. The lack of an efficient electrolyte and the absence of cathode materials with sufficient Ca 2+ storage capabilities have proved to be the main stumbling blocks.īack in 2021, some members of the current research group provided a solution to the former problem when they realized a new fluorine-free calcium (Ca) electrolyte based on a hydrogen (monocarborane) cluster. Its properties are also thought to help accelerate ion transport and diffusion in electrolytes and cathode materials, giving it an edge over other LIB-alternatives such as magnesium and zinc.īut many hurdles remain in the way of Ca metal batteries' commercial viability. As the fifth most abundant element in earth's crust, calcium is widely available and inexpensive, and has higher energy density potential than LIBs. One such replacement is Ca metal batteries. With the use of electric vehicles and grid-scale energy storage systems on the rise, the need to explore alternatives to lithium-ion batteries (LIBs) has never been greater. The breakthrough was reported in the journal Advanced Science on May 19, 2023. A research group has developed a prototype calcium (Ca) metal rechargeable battery capable of 500 cycles of repeated charge-discharge - the benchmark for practical use.
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