Reactivity of Carbon in Lithium–Oxygen Battery
Positive Electrodes
Daniil M. Itkis
Dmitry
A. Semenenko
Elmar Yu. Kataev
Alina I. Belova
Vera S. Neudachina
Anna P. Sirotina
Michael Hävecker
Detre Teschner
Axel Knop-Gericke
Pavel Dudin
Alexei Barinov
Eugene
A. Goodilin
Yang Shao-Horn
Lada V. Yashina
10.1021/nl4021649.s001
https://acs.figshare.com/articles/journal_contribution/Reactivity_of_Carbon_in_Lithium_Oxygen_Battery_Positive_Electrodes/2368249
Unfortunately,
the practical applications of Li–O<sub>2</sub> batteries are
impeded by poor rechargeability. Here, for the first time we show
that superoxide radicals generated at the cathode during discharge
react with carbon that contains activated double bonds or aromatics
to form epoxy groups and carbonates, which limits the rechargeability
of Li–O<sub>2</sub> cells. Carbon materials with a low amount
of functional groups and defects demonstrate better stability thus
keeping the carbon will-o’-the-wisp lit for lithium–air
batteries.
2013-10-09 00:00:00
carbon materials
rechargeability
Li
superoxide radicals
batterie