Journal
CHEMISTRYSELECT
Volume 5, Issue 3, Pages 1186-1192Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201903888
Keywords
anode material; hybrid pseudocapacitance; layered structure; Nb2CTx MXene
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Funding
- National Key Research and Development Program of China [2018YFF0215502]
- National Natural Science Foundation of China [51873074]
- Department of Science and Technology of Guangdong [2018A050506005]
- Bureau of Science and Technology of Foshan Municipality [2016AG100522]
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A facile hydrothermal approach has been successfully adopted to synthesize two-dimensional Nb2CTx MXene, targeting sodium storage approach in two-dimensional MXene. As an anode material for sodium-ion batteries (SIBs), as-prepared Nb2CTx MXene delivered a stable electrochemical performance of similar to 102 mA h g(-1) after 500 cycles at a current density of 1.0 A g(-1). Further, the full cell comprising of Na3V2(PO4)(3)@C cathode and Nb2CTx MXene anode also rendered a reversible capacity of 181 mA h g(-1) at a current density of 100 mA g(-1) after 50 cycles. The good sodium storage could be ascribed to the contribution of hybrid pseudocapacitance, effectively promoted charge storage, unique layered structure and expedited dynamic diffusion of ions. Accordingly, these facts enabled the Nb2CTx MXene to be a promising candidate as an anode material for sodium-ion batteries.
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