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Li‐O 2 Batteries: Hierarchical NiCo 2 S 4 @NiO Core–Shell Heterostructures as Catalytic Cathode for Long‐Life Li‐O 2 Batteries (Adv. Energy Mater. 24/2019)
Author(s) -
Wang Peng,
Li Caixia,
Dong Shihua,
Ge Xiaoli,
Zhang Peng,
Miao Xianguang,
Wang Rutao,
Zhang Zhiwei,
Yin Longwei
Publication year - 2019
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.201970092
Subject(s) - non blocking i/o , materials science , cathode , heterojunction , battery (electricity) , catalysis , chemical engineering , nanotechnology , optoelectronics , chemistry , thermodynamics , biochemistry , engineering , power (physics) , physics
In article number 1900788, Zhiwei Zhang, Longwei Yin, and co‐workers demonstrate a 3D hierarchical NiCo 2 S 4 @NiO heterostructure array on carbon paper for Li‐O 2 battery cathodes. A built‐in interfacial potential between NiCo 2 S 4 and NiO can drastically enhance interfacial charge transfer kinetics. Furthermore, intrinsic LiO 2 ‐affinity characteristics of NiCo 2 S 4 and NiO play a synergistic role in constructing a low‐impedance Li 2 O 2 /cathode contact interface. The resulting hybrids exhibit superior electrocatalytic activity toward both ORR and OER.