Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 26, Issue 45, Pages 8345-8353Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201601631
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Funding
- Program for Professor of Special Appointment in Shanghai (Eastern Scholar)
- National Natural Science Foundation of China [51271105, 51201095]
- Shanghai Municipal Government [13YZ012, 15520720600]
- [IRT13078]
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Lithium ion battery is the predominant power source for portable electronic devices, electrical vehicles, and back-up electricity storage units for clean and renewable energies. High-capacity and long-life electrode materials are essential for the next-generation Li-ion battery with high energy density. Here bimetal-organic-frameworks synthesis of Co0.4Zn0.19S@N and S codoped carbon dodecahedron is shown with rooted carbon nanotubes (Co-Zn-S@N-S-C-CNT) for high-performance Li-ion battery application. Benefiting from the synergetic effect of two metal sulfide species for Li-storage at different voltages, mesoporous dodecahedron structure, N and S codoped carbon overlayer and deep-rooted CNTs network, the product exhibits a larger-than-theoretical reversible Li-storage capacity of 941 mAh g(-1) after 250 cycles at 100 mA g(-1) and excellent high-rate capability (734, 591, 505 mAh g(-1) after 500 cycles at large current densities of 1, 2, and 5 A g(-1), respectively).
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