01884nas a2200229   4500008004100000022001400041245009800055210006900153260011000222300001600332490000600348520097300354100002601327700002601353700002801379700002301407700001801430700002401448700002401472700002601496856013201522       2015                        eng d  a2046-206900aFacile synthesis of Ag nanowire-rGO composites and their promising field emission performance0 aFacile synthesis of Ag nanowirerGO composites and their promisin  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR  a41887-418930 v53 a<p>Crystalline, ultra long silver nanowires (Ag NWs), few-layered rGO (reduced graphene oxide) and their rGO-Ag NW nanocomposite have been synthesized using a polyol reflux technique under optimized experimental conditions. The field emission performance of the rGO-Ag NW nanocomposite, rGO and Ag NW emitters was investigated. The turn on field required to draw an emission current density of similar to 1 mA cm(-2) was found to be similar to 5.00, 3.92 and 2.40 V mu m(-1) for the Ag NW, rGO and rGO-Ag NW nanocomposite emitters, respectively. The combined contribution of the sharp edges of the thin graphene sheets and high aspect ratio of the Ag nanowires, and their synergetic effect in the rGO-Ag NW nanocomposite, are responsible for the enhanced field emission behavior. First-principles density functional calculations show that the enhanced field emission may also be due to the overlapping of the electronic structures of the Ag NWs and rGO nanosheets.</p>1 aSamantara, Aneeya, K.1 aMishra, Dillip, Kumar1 aSuryawanshi, Sachin, R.1 aMore, Mahendra, A.1 aThapa, Ranjit1 aLate, Dattatray, J.1 aJena, Bikash, Kumar1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/facile-synthesis-ag-nanowire-rgo-composites-and-their-promising-field-emission-performance-001821nas a2200217   4500008004100000022001400041245010900055210006900164260000900233300001600242490000700258520105400265100002701319700002601346700001901372700001901391700002101410700002401431700002601455856012201481       2019                        eng d  a1477-922600aSynthesis of a 3D free standing crystalline NiSex matrix for electrochemical energy storage applications0 aSynthesis of a 3D free standing crystalline NiSex matrix for ele  cDEC   a16873-168810 v483 a<p>The electrochemical performance for energy storage of three-dimensional (3D) self-supported heterogeneous NiSex cubic-orthorhombic nanocrystals grown by a facile one-step chemical vapour deposition (CVD) approach on Ni foam substrates has been explored. NiSex shows a high specific capacitance of 1333 F g(-1) with ultra-high energy (105 W h kg(-1)) and power (54 kW kg(-1)) densities. Furthermore, by integrating the as-grown NiSex as the anode and reduced graphene oxide as the cathode, a hybrid super-capacitor (HSC) prototype with a coin cell configuration has been fabricated. The device shows better capacitance (40 F g(-1)) with high energy (22 W h kg(-1)) and power (5.8 kW kg(-1)) densities and robust cycling durability (similar to 88% capacitance retention after 10 000 repeated cycles). For practical reliability of the as-fabricated HSC, a red LED has been illuminated by connecting it with two charged coin cells. These outstanding performances of the HSC prove to be promising for applications in high energy storage systems.</p>
1 aDinara, Syed, Mukulika1 aSamantara, Aneeya, K.1 aDas, Jiban, K.1 aBehera, J., N.1 aNayak, Saroj, K.1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/synthesis-3d-free-standing-crystalline-nisex-matrix-electrochemical-energy-storage