Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
748394 | Solid-State Electronics | 2008 | 4 Pages |
Abstract
Copper oxide nanoparticles with an average diameter of about 10 nm were synthesized via thermal decomposition of CuC2O4 precursor at 400 °C. The nanoparticles were investigated using XRD, HRTEM, FESEM, and UV–vis spectrophotometry. The optical absorption spectrum indicates that the CuO nanoparticles have a direct band gap of 2.75 eV. The electrochemical tests show that the ultrafine CuO nanoparticles, as a promising electrode material, can deliver a large reversible discharge capacity of about 810 mA h g−1. We suggest that if the particles size is too small, the too large specific surface area of the CuO may lead to increase the capacity of the first discharge.
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Authors
Xiaojun Zhang, Dongen Zhang, Xiaomin Ni, Huagui Zheng,