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Electrophoretic Deposition of MnO x @Carbon Nanotubes Film with Nest‐Like Structure as High‐Performance Anode for Lithium‐Ion Batteries
Author(s) -
Li Jiaqi,
Yang Yang,
Wang Jing,
Zhang Peng,
Zhao Jinbao
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600706
Subject(s) - materials science , anode , electrophoretic deposition , chemical engineering , carbon nanotube , electrode , manganese , annealing (glass) , lithium (medication) , porosity , nanotechnology , composite material , metallurgy , chemistry , medicine , endocrinology , engineering , coating
A binder‐free nest‐like structured MnO x @carbon nanotubes anode for lithium‐ion batteries (LIBs) was prepared through a facile electrophoretic deposition (EPD) method. Through the EPD process, both MnO 2 nanowires and carbon nanotubes (CNTs), as starting materials, were interwoven tightly to form a uniform co‐deposited film, possessing a nest‐like architecture. After annealing the film under an inert atmosphere, the MnO 2 nanowires transformed into Mn 3 O 4 and MnO, as confirmed by the X‐ray diffraction patterns. The nest‐like electrode formed a porous and integrated conductive framework and provided the buffer space for the volume change of manganese oxides during cycling processes. As a result, this MnO x @CNTs electrode exhibited excellent cycling performance with a reversible capacity of 1152.1 mAh g −1 at 0.2 A g −1 and a superior cycling stability with 88.0 % capacity retention at 1 A g −1 after 200 cycles.