Facile one-step synthesis of Cu2O@Cu sub-microspheres composites as anode materials for lithium ion batteries. Issue 7 (July 2018)

• Record Type: Journal Article
• Authors: Zhou, Huijie; Zhao, Hongbin; Zhang, Xuan; Cheng, Hongwei; Lu, Xionggang; Xu, Qian
• Is Part Of: Journal of materials science & technology. Volume 34:Issue 7(2018)
• Page Start: 1085
• Page End: 1090
• Publication Date: 2018-07
• Subjects: Cu2O@Cu composites -- Anode materials -- Octadecylamine -- One-step synthesis; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2017.12.010
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: Cu2 O@Cu sub-microspheres composites with a narrow particle size distribution from 300 to 500 nm was successfully fabricated by one-step synthesis through the direct thermal decomposition of copper nitrate (Cu(NO3 )2 ) in octadecylamine (ODA) solvent. As anode materials for lithium ion batteries, the Cu2 O@Cu composites obviously possess high specific capacity, excellent cyclic stability and rate capability. The coulombic efficiency is about 84% in the 1 st cycle and increases significantly up to 97.8% during successive cycles at various current densities. Even under a high current density of 500 mA g −1, the discharge capacity of Cu2 O@Cu composites remains up to 200 mAh g −1 . The excellent electrochemical properties are ascribed to the synergistic effect between high electronic conductivity and volume-buffering capacity of metallic copper composited with Cu2 O.