Lithiation of an Iron Oxide-Based Anode for Stable, High-Capacity Lithium-Ion Batteries of Porous Carbon-Fe3O4/Li[Ni0.59Co0.16Mn0.25]O-2
- Authors
- Ming, Jun; Kwak, Won Jin; Youn, Sung Jun; Ming, Hai; Hassoun, Jusef; Sun, Yang Kook
- Issue Date
- Oct-2014
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- Anodes; Iron oxide; Li-ion batteries; Lithiation; Porous carbon
- Citation
- ENERGY TECHNOLOGY, v.2, no.9-10, pp.778 - 785
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY TECHNOLOGY
- Volume
- 2
- Number
- 9-10
- Start Page
- 778
- End Page
- 785
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/25771
- DOI
- 10.1002/ente.201402031
- ISSN
- 2194-4288
- Abstract
- The lithium storage capacity of an iron oxide-based anode of porous carbon-Fe3O4 (i.e., PC-Fe3O4) was investigated by varying the initial current and mass density of the electrode to achieve a good utilization coefficient of the oxide. It was confirmed that these factors largely affected the capacity of PC-Fe3O4 and a certain mass density of the electrode was key to achieve a high area capacity (mu Ahcm(-2)). Moreover, the chemical and electrochemical lithiation of PC-Fe3O4 were related to the lithiation time and pressure and both were both systemically studied. After optimization, a new battery of PC-Fe3O4/Li[Ni0.59Co0.16Mn0.25]O-2 with a high area capacity of 748 mu Ahcm(-2) (150 mAhg(-1)) and superior energy density of 483 Whkg(-1) (work voltage approximate to 3.2 V) was developed. The battery showed reversible work ability in the rate window of 50-800 mAg(-1), and also it could be charged/discharged for well over 1000 cycles with a capacity retention of 63.8% under the high current value of 0.505 mA (current density, 50 mAg(-1)).
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