Electrochemical properties of hollow copper (II) oxide nanopowders prepared by salt-assisted spray drying process applying nanoscale Kirkendall diffusion
- Authors
- Jeon, Kyung Min; Kim, Jong Hwa; Choi, Yun Ju; Kang, Yun Chan
- Issue Date
- 4월-2016
- Publisher
- SPRINGER
- Keywords
- Kirkendall diffusion; Copper oxide; Lithium-ion battery; Anode material; Nanopowders
- Citation
- JOURNAL OF APPLIED ELECTROCHEMISTRY, v.46, no.4, pp.469 - 477
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF APPLIED ELECTROCHEMISTRY
- Volume
- 46
- Number
- 4
- Start Page
- 469
- End Page
- 477
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89069
- DOI
- 10.1007/s10800-016-0941-5
- ISSN
- 0021-891X
- Abstract
- The synthesis of hollow CuO nanopowders by a salt-assisted spray drying process applying nanoscale Kirkendall diffusion is introduced. The electrochemical properties of the hollow CuO nanopowders for lithium-ion storage are also investigated. The first step of post-treatment of the spray-dried powders under a reducing atmosphere forms spherical and hollow NaCl powders embedded with Cu nanocrystals. Further post-treatment of the Cu-NaCl composite powders under an air atmosphere forms the spherical and hollow NaCl powders embedded with the hollow CuO nanopowders. Oxidation of the Cu nanocrystals under an air atmosphere produces hollow CuO nanopowders by nanoscale Kirkendall diffusion. The spherical and hollow CuO-NaCl composite powder transforms into ultrafine hollow CuO nanopowders by complete washing with distilled water to remove NaCl. The initial discharge and charge capacities of the hollow CuO nanopowders for lithium-ion storage at a current density of 1 A g(-1) are 1077 and 781 mA h g(-1), respectively. The reversible discharge capacity of the hollow CuO nanopowders for the 700th cycle is 803 mA h g(-1).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.