Emerging Technologies for Safer, Longer-Lasting Batteries
Silver -zinc has also been considered as a replacement for Lithium-ion has it holds 25% more power although experience by the Navy shows it has a shorter lifespan and the cost of silver can increase the cost of the battery but is inherently safer since the battery uses a non-flammable electrolyte.
BYD, the Chinese car maker continues to make headlines with its founder, Wang Chuan-Fu drinking the fluid of their batteries. Battery fluid in currently used batteries is highly toxic. By using alternative chemicals, the toxic nature of the fluid is mitigated.
For a side-by-side comparison of battery technologies both single use and rechargeable, please check out this site.