But… What if the key to retiring lithium was in calcium and sulfur? Calcium and sulfur batteries? His goal since September is to delve into the potential of so-called calcium-sulfur (Ca-S) batteries as an alternative to lithium-ion batteries. “Calcium (Ca) represents a promising anode material due to low reducing potential, high capacity, and abundant natural resources. The Karlsruhe Institute of Technology (KIT), for example, has already tested a non-corrosive boron-based electrolyte that would allow more stable charging and discharging with calcium batteries over hundreds of cycles.
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