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Fe 2 O 3 –Ag Porous Film Anodes for Ultrahigh‐Rate Lithium‐Ion Batteries
Author(s) -
Zhang Dan,
Li Yong,
Yan Mi,
Jiang Yinzhu
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201402045
Subject(s) - anode , materials science , lithium (medication) , electrochemistry , porosity , chemical engineering , composite number , metal , ion , oxide , nanoparticle , nanotechnology , composite material , electrode , metallurgy , chemistry , medicine , organic chemistry , engineering , endocrinology
Fe 2 O 3 is a candidate material for anodes in Li‐ion batteries due to its high theoretical capacity. However, the practical application of Fe 2 O 3 is still limited by its sluggish conversion reactions. In this work, porous Fe 2 O 3 films with homogeneously dispersed Ag nanoparticles are fabricated using a facile one‐step electrostatic spray deposition technique. Both the unique, highly porous structure and the conducting Ag metal contribute to the outstanding electrochemical performance of the anode. The Fe 2 O 3 –Ag composite anode retains stable capacities of 1042 (0.1 C), 961 (1 C) and 857 mA h g −1 (5 C) over 100 cycles. When cycled at even higher rates, competitive capacities of 555 (15 C) and 509 mA h g −1 (20 C) are still acquired. This work might present opportunities to develop an oxide–metal anode with high capacity, long cycling life and good rate capability for Li‐ion batteries.