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Title: Fe-based metallopolymer nanowall-based composites for Li-O2 battery cathode
Authors: Zhang, Wenyu
Zhu, Jixin
Ang, Huixiang
Wang, Haibo
Tan, Hui Teng
Yang, Dan
Xu, Chen
Xiao, Ni
Li, Bing
Liu, Weiling
Wang, Xin
Hng, Huey Hoon
Yan, Qingyu
Keywords: DRNTU::Engineering::Materials::Energy materials
Issue Date: 2014
Source: Zhang, W., Zhu, J., Ang, H., Wang, H., Tan, H. T., Yang, D., et al. (2014). Fe-based metallopolymer nanowall-based composites for Li-O2 battery cathode. ACS applied materials & interfaces, 6(10), 7164-7170.
Series/Report no.: ACS applied materials & interfaces
Abstract: Metallopolymer nanowalls were prepared through a simple wet-chemical process using reduced graphene oxides as heterogeneous nucleation aids, which also help to form conductive electron paths. The nanowalls grow vertically on graphene surface with 100 -200 nm in widths and ∼20 nm in thickness. The Fe-based metallopolymer nanowall-based electrode shows best performance as O2 cathode exhibiting high round-trip efficiencies and stable cycling performance among other transition metal containing metallopolymer counterparts. The electrode delivers discharge–charge capacities of 1000 mAh/g for 40 cycles and maintains round-trip efficiencies >78 % at 50 mA/g. The 1st-cycle round-trip efficiencies are 79%, 72%, and 65% at current densities of 50, 200, and 400 mA/g, respectively. The NMR analysis of the Fe-based metallopolymer based electrode after 40 cycles reveals slow formation of the side products, CH3CO2Li and HCO2Li.
ISSN: 1944-8244
DOI: 10.1021/am500158s
Rights: © 2014 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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