Enhanced Photolumincence and Electrochemical Performance of ZnO/ZnS Coaxial Nanocables

M. Ahmad, H. Sun, A. Nisar, K. Maaz, G. Ali, S. Karim


ZnO based sulfide coaxial nanocables have been prepared by a two-step hydrothermal approach for the investigation of lithium storage capacity. The as-prepared ZnO/ZnS structures are analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photospectroscopy (XPS), photoluminescence (PL) and by electrochemical work station. It has been found that these nanostructures demonstrate higher initial discharge capacity of 1096 mAhg-1 with a 69% coulombic efficiency at a rate of 120 mAhg-1 between 2 to 0.02 V. In addition, ZnO/ZnS structures show a significantly improved photoluminescence performance as compare with pure ZnO NWs. The enhanced lithium storage capacity and PL performance is ascribed to the coaxial structure of both materials.

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P. Poizot, S. Laruelle, S. Grugeon, L. Dupont and J.-M. Tarascon,

“Nano-sized transition-metal oxides as negative-electrode

materials for lithium-ion batteries”, Nature, vol. 407, pp. 496-499,

September 2000.

A.S. Arico, P. Bruce, B. Scrosati, J.-M. Tarascon and W. Vn

Schalkwijk, “Nanostructured materials for advanced energy

conversion and storage devices”, Nature Mater., vol. 4, pp. 366-

, May 2005.

M. Ahmad and J. Zhu, “ZnO based advanced functional

nanostructures: synthesis, properties and applications”, J. Mater.

Chem., vol. 21, pp. 599-614, September 2011.

M. Ahmad, J. Zhao, J. Iqbal, W. Miao, L. Xie, R. Mo, and J. Zhu,

“Conductivity enhancement by slight indium doping in ZnO

nanowires for optoelectronic applications”, J. Phys. D: Appl.

Phys., vol. 42, pp. 165406-165412, July 2009.

M. Ahmad, C. Pan, and J. Zhu, “Electrochemical determination of

L-Cysteine by an elbow shaped, Sb-doped ZnO nanowire-modified

electrode”, J. Mater. Chem., vol. 20, pp. 7169-71714, July 2010.

C. Q. Zhang, J. P. Tuz, Y. F. Yuan, X. H. Huang, X. T. Chen and

F. Mao “Electrochemical performances of Ni-coated ZnO as an

anode material for lithium-ion batteries”, J. Electrochem. Soc.,

vol. 154, pp. A65-A69, December 2007.

G.F. Yan, H.S. Fang, G.S. Li, L.P. Li, H.J. Zhao and Y. Yang,

“Improved electrochemical performance of Mg-doped ZnO thin

film as anode material for lithium ion batteries”, Chinese J. Struct.

Chem., vol. 28, no. 4, pp. 409−413, 2009.

J. Liu, Y. Li, X. Huang, G. Li and Z. Li, “Layered double

hydroxide nano- and microstructures grown directly on metal

substrates and their calcined products for application as Li-ion

battery electrodes”, Adv. Func. Mater. vol. 18, pp. 1448-1458,

April 2008.

M. Ahmad, S. Yingying, A. Nisar, H. Sun, W. Shen, M. Wei and

J. Zhu, “Synthesis of hierarchical flower-like ZnO nanostructures

and their functionalization by Au nanoparticles for improved

photocatalytic and high performance Li-ion battery anodes”,

J. Mater. Chem., vol. 21, pp. 7723-7729, April 2011.

J. Liu, Y. Li, R. Ding, J. Jiang, Y. Hu, X. Ji, Q. Chi, Z. Zhu and

X. Huang, “Carbon/ZnO nanorod array electrode with significantly

improved lithium storage capability”, J. Phys. Chem., vol. C 113,

pp. 5336-5339, March 2009.

Y. Yu, C.-H. Chen, J-L. Shui and S. Xie, “Nickel-foam-supported

reticular CoO–Li2O composite anode materials for lithium ion

batteries”, Angew. Chem., Int. Ed., vol. 44, pp. 7085-7089,

November 2005.

Y. Idota, T. Kubota, A. Matsufuji, Y. Maekawa and T. Miyasaka,

“Tin-based amorphous oxide: A high-capacity lithium-ion-storage

material”, Science, vol. 276, 1395-1397, May 1997.

M. Ahmad, X. Yan, and J. Zhu, “Controlled synthesis, structural

evolution, and photoluminescence properties of nanoscale onedimensional hierarchical ZnO/ZnS heterostructures”, J. Phys.

Chem., vol. C 115, pp. 1831-1837, January 2011.

H. Zheng, G. Duan, Y. Li, S. Yang, X. Xu, W. Cai, “Blue

luminescence of ZnO nanoparticles based on non-equilibrium

processes: Defect origins and emission controls”, Adv. Funct.

Mater., vol. 20, pp. 561-572, February 2010.

H. Peng, B. Liuyang, Y. Lingjie, L. Jinlin, Y. Fangli, C. Yunfa,

“Shape-controlled synthesis of ZnS nanostructures: A simple and

rapid method for one-dimensional materials by plasma”,

Nanoscale Res Lett., vol. 4, pp. 1047-1053, June 2009.

C.-Ho Lai, M.-Yen Lu and L. Juann Chen, “Metal sulfide

nanostructures: synthesis, properties and applications in energy

conversion and storage”, J. Mater. Chem., vol. 22, pp. 19-30,

November 2012.


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