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Design and Synthesis of Mesoporous Honeycomb‐Like CoP/Co 2 P Hybrids as Anode with a High Cyclic Stability in Lithium‐Ion Batteries
Author(s) -
Guo Qing,
Ru Qiang,
Wang Bei,
Zhang Peng,
Hou Xianhua,
Ling Francis ChiChung
Publication year - 2017
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700337
Subject(s) - anode , materials science , mesoporous material , calcination , lithium (medication) , dielectric spectroscopy , chemical engineering , electrochemistry , phosphide , current density , scanning electron microscope , nanotechnology , metal , electrode , composite material , chemistry , metallurgy , catalysis , medicine , biochemistry , engineering , endocrinology , physics , quantum mechanics
In this work, a multistep synthetic strategy was exploited to fabricate a new honeycomb‐like metallic phosphide nanohybrid (CoP/Co 2 P) based on an evaporating reduction and calcination approach. We characterized the as‐prepared samples in terms of crystal structure, morphology, and electrochemical performance by using XRD, field‐emission scanning electron microscopy, TEM, charge–discharge tests, and electrochemical impedance spectroscopy. As an anode material for lithium‐ion batteries, the CoP/Co 2 P hybrid anode demonstrated a good capacity retention with a specific capacity of 851.2 mAh g −1 at 200 mA g −1 after 450 cycles and a reversible capacity of 590 mAh g −1 at a high charge/discharge current density of 1000 mA g −1 .