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Wrinkled Perovskite La 0.9 Mn 0.6 Ni 0.4 O 3− δ Nanofibers as Highly Efficient Electrocatalyst for Rechargeable Li−O 2 Batteries
Author(s) -
Guo Shuai,
Zou Lu,
Wang Ziling,
Sun Mingjie,
Chen Yao,
Chi Bo,
Pu Jian,
Li Jian
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901671
Subject(s) - electrocatalyst , materials science , nanofiber , electrospinning , perovskite (structure) , cathode , chemical engineering , electrochemistry , catalysis , nanoparticle , nanotechnology , electrode , composite material , polymer , chemistry , organic chemistry , engineering
The design of high‐performance electrocatalysts is crucial to the capacity performance and cycle stability of Li−O 2 batteries. Herein, wrinkled perovskite La 0.9 Mn 0.6 Ni 0.4 O 3− δ nanofibers (LMN NFs) are synthesized by electrospinning method as cathode catalyst for Li−O 2 batteries. In comparison with La 0.9 Mn 0.6 Ni 0.4 O 3− δ nanoparticles synthesized by traditional sol‐gel method (LMN NPs), the batteries with the LMN NFs catalyst exhibit the larger specific discharge capacity (9397 mAh g −1 ), better cycle stability (100 cycles) and lower voltage gap (1.111 V) at a current density of 300 mA g −1 . The improvement of electrochemical performance is correlated with the structure of wrinkled nanofibers that provides abundant active sites and sufficient provision for Li 2 O 2 deposition. The research provides a highly efficient perovskite‐type electrocatalyst for rechargeable Li−O 2 batteries.