Copper - sulphur batteries from UK company Oxis Energy are to be used in electric and solar vehicles made by US company Bye Aerospace . Oxis has developed a non - flammable electrolyte for its battery , which offers densities of more than 500 Wh / kg and can last 250 charge cycles . Bye Aerospace said the battery technology could improve future aircraft flight times by 50 - 100 % . Oxis Energy via IEEE Spectrum If successful , Oxis ' product could pave the way for lithium - sulphur batteries aimed at larger aircraft applications .
Copper - sulphur batteries from UK company Oxis Energy are to be used in electric and solar vehicles made by US company Bye Aerospace . Oxis has developed a non - flammable electrolyte for its battery , which offers densities of more than 500 Wh / kg and can last 250 charge cycles . Bye Aerospace said the battery technology could improve future aircraft flight times by 50 - 100 % . If successful , Oxis ' product could pave the way for lithium - sulphur batteries aimed at larger aircraft applications .