| Summary: | A simple, efficient, and cost-effective extended graphite as a supporting platform further supported the MnO<sub>2</sub> growth for the construction of hierarchical flower-like MnO<sub>2</sub>/extended graphite. MnO<sub>2</sub>/extended graphite exhibited an increase in sp<sup>2</sup> carbon bonds in comparison with that of extended graphite. It can be expected to display better electrical conductivity and further promote electron/ion transport kinetics for boosting the electrochemical performance in supercapacitors and glucose sensing. In supercapacitors, MnO<sub>2</sub>/extended graphite delivered an areal capacitance value of 20.4 mF cm<sup>−2</sup> at 0.25 mA cm<sup>−2</sup> current densities and great cycling stability (capacitance retention of 83% after 1000 cycles). In glucose sensing, MnO<sub>2</sub>/extended graphite exhibited a good linear relationship in glucose concentration up to about 5 mM, sensitivity of 43 μA mM<sup>−1</sup>cm<sup>−2</sup>, and the limit of detection of 0.081 mM. It is further concluded that MnO<sub>2</sub>/extended graphite could be a good candidate for the future design of synergistic multifunctional materials in electrochemical techniques.
|
|---|