•A lithium-airbatterycomprisesofalithiumnegativeelectrode,apositiveelectrodethatincludesacatalystcontaininggold,andanon-aqueouselectrolyteinterposedbetweenthelithiumnegativeelectrodeandthepositiveelectrode.Inotherwords,itismetal-airbatterychemistrythatusesoxidationoflithiumattheanodeandreductionofoxygenatthecathodetoinduceacurrentflow.Itisanall-solid-statebattery.
•The conceptoflithium-airbatterieswasinitiallyproposedinthe1970sasapossiblepowersourceforbatteryelectricvehicles.Li-airbatteriesrecapturedscientificinterestinthelate2000s,duetoadvancesinmaterialstechnologyandgrowingdemandforrenewableenergysources.
•The primaryappealoftheLi-airbatteryistheextremelyhighspecificenergy,ameasureoftheamountofenergyacellcanstoreforagivenweight.Alithium-airbatteryhasanenergydensity(perkilogram)comparabletogasoline.Thebatteriesgainthisadvantageinspecificenergysincetheyuseoxygenfromtheairinsteadofstoringanoxidizerinternally.
•The echnologyrequiressignificantadvancesinmultiplefieldsbeforeaviablecommercialimplementationcanbedeveloped.Ofalltheavailableapproaches,fourofthemareactive,suchasaprotic,aqueous,solidstate,andmixedaqueous/aprotic.
•Metal-airbatteries,specificallyzinc-air,havegarneredattention,duetothepotentialforhighenergydensities.Thetheoreticalspecificenergydensitiesformetal-airbatteriesarehigherthanion-basedapproaches,duetotheuseofatmosphericoxygenasthecathode,removingatraditionalcathodestructure.Recently,lithium-airbatterieshavebeenproposedasthenextstepinlithiumbatteryarchitecture,duetothehighenergydensityoflithium,withrespecttoair(3840mA·h/g).[by Introduction]

本文的引用網址: