Journal
NANOSCALE
Volume 9, Issue 48, Pages 19318-19327Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr07748c
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2016R1A2B2006311]
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Nickel-manganese spinel oxide (NiMn2O4) was hybridized with reduced graphene oxide hydrogel (rGOH) via a facile solvothermal process and a highly porous three-dimensional (3D) structure was constructed. NiMn2O4/rGOH exhibited excellent electrochemical performance due to the high specific surface area, excellent electrocatalytic activity, and enhanced electrical conductivity due to the synergetic effects between the two components. The NiMn2O4/rGOH exhibited excellent glucose sensing performance with high sensitivity (1310.8 mu A mM(-1) cm(-2)), a wide linear range (2 mu M-20 mM), rapid response time (<3.5 s), and anti-interference properties. Furthermore, it also showed excellent supercapacitor performance with a high capacitance (396.85 F g(-1)) and excellent energy and power density on account of the large surface area and pseudo-capacitor behavior of NiMn2O4. A self-powered glucose sensor can be fabricated with NiMn2O4/rGOH as both supercapacitor and glucose sensing electrodes.
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