Flower-like Copper Cobaltite Nanosheets on Graphite Paper as High-Performance Supercapacitor Electrodes and Enzymeless Glucose Sensors

Liu, Shude, Hui, K.S. and Hui, K. N. (2016) Flower-like Copper Cobaltite Nanosheets on Graphite Paper as High-Performance Supercapacitor Electrodes and Enzymeless Glucose Sensors. ACS Applied Materials & Interfaces, 8 (5). pp. 3258-3267. ISSN 1944-8244

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Abstract

Flower-like copper cobaltite (CuCo2O4) nanosheets anchored on graphite paper have been synthesized using a facile hydrothermal method followed by a postannealing treatment. Supercapacitor electrodes employing CuCo2O4 nanosheets exhibit an enhanced capacitance of 1131 F g-1 at a current density of 1 A g-1 compared with previously reported supercapacitor electrodes. The CuCo2O4 electrode delivers a specific capacitance of up to 409 F g-1 at a current density of as high as 50 A g-1, and a good long-term cycling stability, with 79.7% of its specific capacitance retained after 5000 cycles at 10 A g-1. Furthermore, the as-prepared CuCo2O4 nanosheets on graphite paper can be fabricated as electrodes and used as enzymeless glucose sensors, which exhibit good sensitivity (3.625 μA μM-1 cm-2) and an extraordinary linear response ranging up to 320 μM with a low detection limit (5 μM).

Item Type: Article
Uncontrolled Keywords: copper cobaltite,glucose sensor,hydrothermal method,nanosheets,supercapacitors
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: Pure Connector
Date Deposited: 09 Nov 2016 15:00
Last Modified: 22 Apr 2020 01:43
URI: https://ueaeprints.uea.ac.uk/id/eprint/61291
DOI: 10.1021/acsami.5b11001

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