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Zhang X.,Anhui Normal University | Zhang X.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | Yu L.,Anhui Normal University | Yu L.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | And 8 more authors.
Physical Chemistry Chemical Physics | Year: 2013

A facile and low-cost approach has been developed to fabricate porous CuO nanobelts directly grown on a Cu substrate. The as-prepared CuO samples can be directly used as integrated electrodes for lithium-ion batteries and pseudo-supercapacitors without the addition of other ancillary materials such as carbon black or a binder to enhance electrode conductivity and cycling stability. The unique nanostructural features endow them with excellent electrochemical performance as demonstrated by high capacities of 640 mA h g-1 after 100 cycles at 0.2 C rate and an excellent specific capacitance of 340 F g-1, which corresponds to the energy density of 45 W h kg-1. The cyclability of the electrode demonstrates only a 10-15% loss in capacitance over 5000 cycles. © the Owner Societies 2013.


Wang G.,Anhui Normal University | Wang G.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | He X.,Anhui Normal University | He X.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | And 12 more authors.
Microchimica Acta | Year: 2013

This article reviews the progress made in the past 5 years in the field of direct and non-enzymatic electrochemical sensing of glucose. Following a brief discussion of the merits and limitations of enzymatic glucose sensors, we discuss the history of unraveling the mechanism of direct oxidation of glucose and theories of non-enzymatic electrocatalysis. We then review non-enzymatic glucose electrodes based on the use of the metals platinum, gold, nickel, copper, of alloys and bimetals, of carbon materials (including graphene and graphene-based composites), and of metal-metal oxides and layered double hydroxides. This review contains more than 200 refs. © 2012 Springer-Verlag Wien.


Yu L.,Anhui Normal University | Yu L.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | Jin Y.,Anhui Normal University | Li L.,Anhui Normal University | And 6 more authors.
CrystEngComm | Year: 2013

A facile and mild approach was used for the controlled synthesis of 3D porous gear-like CuO on a Cu substrate (PGC) based on annealing gear-like Cu(OH)2 (GC) at 200 °C in air. There are 3-10 edges that build up a gear-like structure and a huge number of holes formed on each edge. As an integrated nanostructure, the binder-free PGC can be used as a supercapacitors electrode (SC) directly. Due to its 3D porous structure and the highly conductive Cu substrate as a current collector, the integrated electrode exhibited excellent electrochemical properties. These were demonstrated by excellent specific capacitance as high as 348 F g-1 at a discharge current density of 1 A g-1, which corresponds to the energy density of 43.5 Wh kg-1. The electrochemical tests also showed that the as-synthesized PGC exhibited excellent cycling stability. © 2013 The Royal Society of Chemistry.


Zhang X.,Anhui Normal University | Zhang X.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | Ji R.,Anhui Normal University | Ji R.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | And 10 more authors.
CrystEngComm | Year: 2013

Silver nanodendrites were synthesized on Cu rods by a simple and facile displacement reaction without using any surfactants. The morphologies were investigated by scanning electron microscopy (SEM). The phase analysis of the dendritic nanostructure was revealed by X-ray diffraction (XRD). The element analysis was characterized by energy dispersive X-ray spectroscopy (EDS). Then a novel Ag nanodendrites/Cu rod electrode (named Ag NDS/CRE) based non-enzymatic hydrogen peroxide (H2O2) and glucose (GO) sensor was fabricated and evaluated by cyclic voltammetry (CV) and typical amperometric response (I-t) method. Exhilaratingly, the electrode shows significant electrocatalytic activity toward the reduction of H2O2 and oxidation of GO. Its advantage lies in its wide linear range from 0.2 mM to 19.2 mM for the detection of H2O2 with a low detection limit of 0.1 μM (S/N = 3) and also has a good response for GO with a linear range from 0.02 mM to 7.4 mM with the optimized detection limit of 0.1 μM (S/N = 3). The response time of the proposed electrode is less than 3 s. What's more, the proposed sensor displays excellent selectivity, good stability, and satisfying repeatability. © 2013 The Royal Society of Chemistry.


Ji R.,Anhui Normal University | Ji R.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | Huang Y.,Anhui Normal University | Huang Y.,Key Laboratory for Functional Molecular Solids of the Education Ministry of China | And 8 more authors.
Materials Research Bulletin | Year: 2013

β-Nickel hydroxide nanoplates were synthesized on Cu rods by a simple hydrothermal method without the use of surfactants. A novel Ni(OH)2 nanoplates/Cu rod electrode for hydrazine and non-enzymatic hydrogen peroxide was then fabricated and designated as β-Ni(OH)2 nanoplates/Cu rod electrode (β-Ni(OH)2 NPS/CRE). This electrode was evaluated by cyclic voltammetry (CV) and the typical amperometric response (I-t) method. β-Ni(OH)2 NPS/CRE has a wide linear range for the detection of hydrazine, from 1 to 15,931 μM, with a low detection limit of 0.3 μM (S/N = 3) and a response time of less than 3 s. Its detection of hydrogen peroxide, has two linear ranges (5-7612.5 μM for I; 8862.5-17,612.5 μM for II) with an optimized detection limit of 1.68 μM (S/N = 3) and a response time of less than 3 s. The results revealed that β-Ni(OH)2 NPS/CRE had favorable electrochemical responses toward those environmental pollutants. © 2013 Elsevier Ltd. All rights reserved.

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