Structural interpretation of chemically synthesized ZnO nanorod and its application in lithium ion battery

• Published in: Applied surface science Vol. 329; pp. 206 - 211
• Main Authors: Kundu, Samapti, Sain, Sumanta, Yoshio, Masaki, Kar, Tanusree, Gunawardhana, Nanda, Pradhan, Swapan Kumar
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 28.02.2015
• Subjects: Anode material; Anodes; Charge; Diffraction; Elongation; Lithium ion battery; Lithium-ion batteries; Nanostructure; Rietveld analysis; Rods; Texture; Zinc oxide; ZnO nanorods; ZnO nanorods; Anode material; Lithium ion battery; Rietveld analysis; Texture
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2014.12.152

•ZnO nanorods are synthesized at room temperature via a simple chemical route.•Growth direction of ZnO nanorods has been determined along 〈002〉.•ZnO nanorods constructed anode shows a high discharge capacity in first cycle.•It retains good reversible capacity compared to other ZnO morphologies. ZnO nanorods are synthesized at room temperature via a simple chemical route without using any template or capping agent and its importance is evaluated as a suitable candidate for anode material in lithium ion battery. Structural and microstructure characterizations of these nanorods are made by analyzing the X-ray diffraction data employing the Rietveld method of powder structure refinement. It reveals that the ZnO nanorods are grown up with a preferred orientation and elongated along 〈002〉. FESEM images reveal that these uniform cylindrical shaped nanorods are of different lengths and diameters. These synthesized ZnO nanorods are tested as an anode material for lithium ion batteries. The nano grain size of the ZnO rods results in less volume expansion and/or contraction during the alloying/de-alloying process and causes in good cyclability. In addition, synthesized ZnO nanorods deliver high charge/discharge capacities compared to other reported ZnO materials.