Porous CoC₂O₄/Graphene Oxide Nanocomposite for Advanced Potassium-Ion Storage.

Author(s) Wang, L.; Wei, K.; Zhang, P.; Wang, H.; Qi, X.; Wu, X.; Zhao, W.; Ju, Z.
Journal J Nanosci Nanotechnol
Date Published 2019 Jun 01

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 at 50 mA g and a superior rate capability even at 1 A g. 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.

DOI 10.1166/jnn.2019.16106
ISSN 1533-4880
Citation J Nanosci Nanotechnol. 2019;19(6):36103615.

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