Principle understanding towards synthesizing Fe/N decorated carbon catalysts with pyridinic-N enriched and agglomeration-free features for lithium–oxygen batteries

Abstract

Synthesizing a pyridinic-N enriched and agglomeration-free Fe/N-decorated carbon catalyst for lithium–oxygen batteries.

Well-dispersed Pt/RuO2-decorated mesoporous N-doped carbon as a hybrid electrocatalyst for Li–O2 batteries

“…[5][6][7] Despite the remarkable advances in Li-O 2 battery technology, high overpotentials during charging and low cycling stability limit their practical application. 8,9 In particular, the poor cycling performance of Li-O 2 batteries is due to a declining charge transfer rate and deterioration of catalytic activity caused by the accumulation of Li 2 O 2 on the oxygen electrode (O 2 -electrode) during the oxygen reduction reaction (ORR), which occurs during discharge (2Li + + O 2 + 2e À / Li 2 O 2 ), and oxygen evolution reaction (OER), which occurs during the charging process (Li 2 O 2 / 2Li + + O 2 + 2e À ). 10 Consequently, a signicant advantage is gained when the O 2electrode of Li-O 2 batteries bears a modied surface carbon structure that accommodates Li 2 O 2 accumulation during the discharge process.…”