Dual carbon battery

A dual carbon battery is one that uses carbon for both the cathode and the anode. A dual carbon battery is one that uses carbon for both the cathode and the anode. Dual-carbon (also called dual-graphite) batteries were first introduced in a 1989 patent. They were later studied by various other research groups. In 2014 start-up Power Japan Plus announced plans to commercialize its version, named the Ryden. Colead Kaname Takeya is known for his work on the Toyota Prius and Tesla Model S. The company claimed that its cell offers energy density comparable to a lithium-ion battery, more rapid charge rate, a longer functional lifetime (3k cycles), improved safety and cradle-to-cradle sustainability. The company claimed that its battery charges 20 times faster than conventional lithium ion batteries, is rated for more than 3,000 cycles and can slot directly into existing manufacturing processes, without changes to existing manufacturing lines. As an electrolyte, the cell uses one or more lithium salts in an aprotic organic solvent. These remain unspecified, but as an example in a patent, the group uses a system consisting of lithium hexafluorophosphate (LiPF6) as the salt, and ethylene carbonate (EC) and dimethyl carbonate (DMC), mixed in a 1:2 volume ratio, as solvent.