High volumetric energy density annealed-MXene-nickel oxide/MXene asymmetric supercapacitor
By Q. Xia, Jianjian Fu, J. Yun, Rajaram S. Mane, K. Kim. 2017
170 citations recorded by the source corpus.
A Ti3C2Tx MXene electrode decorated with NiO nanosheets was synthesized by a facile and cost-effective hydrothermal method. The NiO nanosheets were grown and immobilized on the carbon-supported TiO2 layer which was derived from Ti3C2Tx-MXene during a thermal annealing process. An electrode based on the NiO-grown derived-TiO2/C-Ti3C2Tx-MXene nanocomposite (Ni-dMXNC) exhibited a remarkable maximum specific capacity of 92.0 mA h cm−3 at 1 A g−1 and 53.9 mA h cm−3 at 10 A g−1. Furthermore, an asymmetric supercapacitor (ASC) device composed of Ni-dMXNC as the positive electrode and Ti3C2Tx MXene as the negative electrode was demonstrated to be better with a high energy density of 1.04 × 10−2 W h cm−3 at a power density of 0.22 W cm−3, and cycling stability with 72.1% retention after 5000 cycles, compared to ASCs using previously reported Ti3C2Tx MXene materials. The enhanced capacitive performance is attributed to the newly formed high-surface-area multilayers of the Ni-dMXNC architecture, the active surface of NiO layer, and a favourable synergetic behaviour of the Ti3C2Tx MXene negative electrode.
Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/35499a885434032f6bbba481d5ed08f1f90d360d
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In Electronic, Optical and Magnetic Materials
In Materials Chemistry
Citations in the corpus
- Two-dimensional MXenes for energy storage (2018, background): “Notably, MXenes annealed under Ar, N2, and N2/H2 atmosphere retained the initial chemical structure [46], and would be destroyed as exposed under an oxidation atmosphere under high temperature [83].”