Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 19, Issue 6, Pages 3610-3615Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2019.16106
Keywords
Potassium-Ion Batteries; Anode Material; Porous CoC2O4; CoC2O4/GO Composite; Electrochemical Performance
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Funding
- Fundamental Research Funds for the Central University [2017XKQY003]
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Potassium-ion batteries (PIBs), as one of the alternatives to lithium-ion batteries (LIBs), have attracted considerable attention on account of the affluence and low-cost of potassium. Moreover, CoC2O4 and graphene oxide (GO) have been used very well in lithium-ion batteries. Hence, the hybrid CoC2O4/GO was investigated as a new anode material for PIBs. The hybrid CoC2O4/GO was synthesized by a facile and cheap method combined with supersonic dispersion. Electrochemical measurements reveal that the hybrid CoC2O4/GO delivered an excellent cycling stability of 166 mAh g(-1) at 50 mA g(-1) and a superior rate capability even at 1 A g(-1). These results demonstrate although the cycle ability was insufficient for practical applications, transition-metal oxalates composites can still bring new hope to the development of PIBs.
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