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Title: Three dimensionals α-Fe2O3/polypyrrole (Ppy) nanoarray as anode for micro lithium ion batteries
Authors: Lai, Linfei
Yang, Huanping
Lim, San Hua
Zhen, Yongda
Yu, Ting
Shen, Zexiang
Lin, Jianyi
Liu, Jilei
Zhou, Weiwei
Issue Date: 2013
Source: Liu, J., Zhou, W., Lai, L., Yang, H., Lim, S. H., Zhen, Y., et al. (2013). Three dimensionals α-Fe2O3/polypyrrole (Ppy) nanoarray as anode for micro lithium ion batteries. Nano Energy, 2(5), 726-732.
Series/Report no.: Nano energy
Abstract: Three dimensional, self-supported α-Fe2O3/Ppy composite electrode with enhanced specific areal capacity and rate performance was successfully fabricated by a simple, low-cost, two-steps process consisting of direct heating of iron foil in air and subsequent coating of conducting polymer Ppy on the α-Fe2O3 nanoflakes. By using α-Fe2O3/Ppy as the anode materials with iron foil as the current collector, the unique structure affords a highly conductive pathway for electron, a short diffusion length for ions, a fast mass transport channel for electrolyte, and sufficient void space for accommodating large volume variations during Li intercalation/diintercalation for Li-ion battery. A relatively high specific capacity of 0.42 mA h/cm2 can be achieved at 0.1 mA/cm2 even after 100 charge/discharge cycles, with a plateau potential of 1 V and nearly 100% Coulombic efficiency, suggesting the feasibility to use this unique 3D nanostructured hybrid composite for microbattery in both small and large scale applications.
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2012.12.008
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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