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Preparation of a New Carbon Nanofiber as a High‐Capacity Air Electrode for Nonaqueous Lithium–Oxygen Batteries
Author(s) -
Xu Chunyang,
Dai Jicui,
Teng Xiangguo,
Zhu Yongming
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201601005
Subject(s) - overpotential , materials science , aerogel , carbon fibers , cathode , electrochemistry , lithium (medication) , chemical engineering , battery (electricity) , carbon nanofiber , electrode , pyrolysis , catalysis , microstructure , nanofiber , inorganic chemistry , polyaniline , nanotechnology , chemistry , composite material , organic chemistry , carbon nanotube , composite number , polymer , endocrinology , engineering , power (physics) , quantum mechanics , polymerization , medicine , physics
A new carbon nanofiber codoped with nitrogen and phosphorus (NPCNF) that has a high specific surface area and good electrocatalytic properties for the oxygen reduction reaction (ORR) was synthesized using a template‐free method. The fabrication process involves the pyrolysis of phytic acid doped polyaniline aerogel. A nonaqueous Li‐O 2 battery with a specific capacity as high as 12 607 mA h g −1 was constructed by using an oxygen electrode based on NPCNFs supported by Ni foam. The NPCNF electrode showed a lower overpotential than pure carbon. The observed excellent electrochemical performance could be because of the unique foamlike N‐ and P‐codoped carbon microstructure, which had a high ORR catalytic activity. These results indicate that the use of NPCNF as a cathode material could be a feasible approach to obtain a high‐capacity Li–O 2 battery.