Journal
CHEMSUSCHEM
Volume 12, Issue 4, Pages 873-880Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201802494
Keywords
batteries; electrochemistry; electrodes; hollow structures; graphene
Funding
- National Natural Science Foundation of China [51674068, 51774002, 51874079]
- Natural Science Foundation of Hebei Province [E2018501091]
- Science and Technology Project of Hebei Province [15271302D]
- Training Foundation for Scientific Research of Talents Project, Hebei Province [A2016005004]
- Fundamental Research Funds for the Central Universities [N172302001]
Ask authors/readers for more resources
Hollow MoO2/reduced graphene oxide (MoO2/rGO) sub-microsphere composites have been fabricated through a simple hydrothermal approach followed by a heat treatment process. When employed as an anode material for potassium-ion batteries, the as-synthesized MoO2/rGO composite can deliver an initial charge specific capacity of 367.2 mAh g(-1) at 50 mA g(-1), and its reversible capacity is 218.9 mAh g(-1) after 200 cycles. Even when cycled at 500 mA g(-1), a high charge specific capacity of 104.2 mAh g(-1) is achieved after 500 cycles. The excellent cycling capability and rate performance may be ascribed to the synergistic effects of the reduced graphene oxide and the hollow MoO2 spheres, which can increase the electrical conductivity of the composite, as well as resisting the strain arising from the repeated discharge-charge processes. These results indicate that the MoO2/rGO hollow sphere composites are promising negative electrode materials for potassium-ion batteries.
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