Journal
ELECTROCHIMICA ACTA
Volume 182, Issue -, Pages 507-515Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.09.120
Keywords
Cobalt oxide; Porous nanotubes; Anode; Lithium-ion batteries
Categories
Funding
- National Natural Science Foundation of China [21471016, 21271023]
- National High-Tech Research and Development Program of China (863 Program) [2012AA06A109]
- 111 Project [B07012]
Ask authors/readers for more resources
Co3O4 has been investigated intensively for its high specific capacity which makes it a promising candidate anode for high-performance lithium ion batteries (LIBs). However, rational design of Co3O4 electrode that is beneficial for its electrochemical performance is still a great challenge. Herein, we designed and fabricated porous Co3O4 nanotubes (P-Co3O4-NTs) by coaxial electrospinning method followed by a fine annealing treatment, which display one dimensional tubular structure with porous wall and hollow interior. The uniqueness of this strategy is that the morphologies of the P-Co3O4-NTs could be tuned by adjusting the mass ratio of reactants. The resultant P-Co3O4-NTs exhibit excellent lithium storage performance in terms of specific capacity, rate capability, and cycling stability, when used as an anode material for rechargeable LIBs. This unique structure endows a high reversible specific capacity of 1826.2 mA g(-1) at a current density of 0.3 A g(-1) after 100 cycles. Even at high current densities of 2 and 5 A g(-1), the P-Co3O4-NTs electrode still could deliver remarkable discharge capacities of 1506.2 and 1145.1 mAh g(-1), respectively. The excellent electrochemical performance can be attributed to the unique tubular and porous structure of P-Co3O4-NTs, which not only can accommodate the large volume change but also can provide an excellent ion diffusion and electronic conduction pathway. Therefore, the P-Co3O4-NTs have the potential for use as a high performance anode material in LIBs. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available