Premium
Superior Performance of a Li–O 2 Battery with Metallic RuO 2 Hollow Spheres as the Carbon‐Free Cathode
Author(s) -
Li Fujun,
Tang DaiMing,
Zhang Tao,
Liao Kaiming,
He Ping,
Golberg Dmitri,
Yamada Atsuo,
Zhou Haoshen
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201500294
Subject(s) - battery (electricity) , cathode , materials science , spheres , carbon fibers , metal , fullerene , charge (physics) , nanotechnology , engineering physics , composite material , chemistry , physics , thermodynamics , metallurgy , power (physics) , organic chemistry , quantum mechanics , astronomy , composite number
Hierarchically porous, metallic RuO 2 hollow spheres are applied as a carbon‐free cathode for Li–O 2 batteries for the first time. They exhibit low charge potentials of ≈3.5 V, corresponding to overpotentials of 0.13/0.54 V in discharging and charging processes, a large reversible capacity of ≈1400 mAh g −1 , and 100 cycles of full discharge and charge.