Umm, a good number of those have hit the market. Graphene anodes are pretty bog standard at this point in LiPo batteries. Magnesium doping has also found its

Umm, a good number of those have hit the market. Graphene anodes are pretty bog standard at this point in LiPo batteries. Magnesium doping has also found its way into high density NMC batteries. Sodium-ion batteries are currently being manufactured by CATL and in the ramping up phase. You aren't seeing them because the chemistry of these batteries is usually only called "lithium ion" or "Sodium Ion" the various other chemicals are thrown into a soup of special sauce to raise battery density, cycle life, charge speed, etc.