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Abstract: In this paper, we demonstrate the preparation of reduced graphene oxide (rGO) decorated with FeF3 nanoparticles (FeF3NPs) by adding FeF3 aqueous solution to the rGO ethanol/water dispersion. The obtained FeF3/rGO nanocomposite is further tested as a cathode material for rechargeable lithium batteries and found to have high discharge capacities, good rate capabilities and cycling performance. It can deliver a high discharge capacity of 476mAhg−1 at a current density of 50mAg−1 in the voltage range 1.0–4.5V. It still delivers a discharge capacity of 146mAhg−1 with 81% capacity retention after 50 charge–discharge cycles under a current density of 1000mAg−1 in the voltage range 1.7–4.5V. [Copyright &y& Elsevier]

Abstract: The present communication reports on the first electrodeposition of Ni(OH)2 on ZnO array supported on Ni foam. When applied as a binder-free electrode material for pseudocapacitive energy storage, the resulting ZnO@Ni(OH)2 array exhibits a high specific capacitance of 2028Fg−1 at a current density of 10Ag−1 with good cycling stability. Meanwhile, the array exhibits a superb rate capability. Even at an extremely high current density of 100Ag−1, the array still shows a very high specific capacitance of 1059Fg−1. [Copyright &y& Elsevier]

Abstract: The present communication reports on the first preparation of Ni(OH)2 nanoflakes array on Ni foam, carried out by hydrothermal treatment of Ni foam in acidic medium without the presence of extra nickel salt. We further demonstrate the application of such Ni(OH)2/Ni foam as a binder-free electrode material for supercapacitors. It is found that it can deliver high capacities of 1228F/g and 918F/g at 5A/g and 30A/g, respectively, with excellent cycling stability. [Copyright &y& Elsevier]

Abstract: The present communication reports on the first preparation of porous tubular C/MoS2 nanocomposites using porous anodic aluminum oxide as a template. We further demonstrate the application of such composites as a novel electrode material for supercapacitors. It is found that they can deliver a high capacitance of 210F/g at 1A/g and exhibit excellent long-term cycling stability over 1000 cycles. [Copyright &y& Elsevier]

Abstract: In this paper, we report on one-pot synthesis of Ag nanoparticles/reduced graphene oxide (AgNPs/rGO) nanocomposites by heating mixed solution of graphene oxide (GO) and AgNO3 with the use of diethylenetriamine as a reducing agent at 80°C for 30min. Several analytical techniques including UV–vis spectroscopy, Raman spectroscopy and transmission electron microscopy (TEM) have been employed to characterize the resulting nanocomposites. It was found that such nanocomposites exhibit good catalytic activity toward the reduction of H2O2. This nonenzymatic H2O2 sensor shows a fast amperometric response time of less than 2s. The linear detection range is estimated to be from 0.1 to 100mM (r =0.999), and the detection limit is estimated to be 3.6μM at a signal-to-noise ratio of 3. [Copyright &y& Elsevier]

Abstract: Ag nanoparticles-decorated reduced graphene oxide (AgNPs-rGO) has been successfully fabricated through a one-step strategy, carried out by hydrothermal treatment of the mixture of AgNO3 and GO solution under strong alkaline conditions at 180°C for 30min. The reaction was accomplished without extra reducing agent and surface modifier. As-synthesized AgNPs-rGO has been successfully applied in catalytic performance toward the reduction of H2O2. This H2O2 sensor shows a wide linear range of 0.1–60mM (r =0.991) and a low detection limit of 1.80μM at a signal-to-noise ratio of 3. [Copyright &y& Elsevier]

Abstract: The present communication reports a novel and simple strategy to synthesize Au nanoplates (AuPs) by heating an aqueous solution of HAuCl4 in the presence of poly [(2-ethyldimethylammonioethyl methacrylate ethyl sulfate)-co-(1-vinylpyrrolidone)] (PQ11). Direct placing of the resultant dispersion on a glassy carbon electrode (GCE) surface gives a very stable AuPs-containing film exhibiting remarkable catalytic performance toward both the oxidation and reduction of H2O2. This enzymeless H2O2 sensor shows a fast amperometric response time of less than 3s and the corresponding linear range and detection limit are estimated to be from 0.1mM to 50mM (r =0.999) and 4μM at a signal-to-noise ratio of 3, respectively. [Copyright &y& Elsevier]