CUED Publications database

Morphology-Dependent Electrochemical Properties of CuS Hierarchical Superstructures.

Hosseinpour, Z and Scarpellini, A and Najafishirtari, S and Marras, S and Colombo, M and Alemi, A and De Volder, M and George, C and Lesnyak, V (2015) Morphology-Dependent Electrochemical Properties of CuS Hierarchical Superstructures. Chemphyschem, 16. pp. 3418-3424.

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Abstract

Hierarchical superstructures formed by self-assembled nanoparticles exhibit interesting electrochemical properties that can potentially be exploited in Li-ion batteries (LIBs) as possible electrode materials. In this work, we tested two different morphologies of CuS superstructures for electrodes, namely, tubular dandelion-like and ball-like assemblies, both of which are composed of similar small covellite nanoparticles. These two CuS morphologies are characterized by their markedly different electrochemical performances, suggesting that their complex structures/morphologies influence the electrochemical properties. At 1.12 A g(-1), the cells made with CuS tubular structures delivered about 420 mAh g(-1), and at 0.56 A g(-1), the capacity was as high as about 500 mAh g(-1) with good capacity retention. Their ease of preparation and processing, together with good electrochemical performance, make CuS tubular dandelion-like clusters attractive for developing low-cost LIBs based on conversion reactions.

Item Type: Article
Uncontrolled Keywords: colloidal synthesis covellite electrochemistry lithium-ion batteries nanostructures
Subjects: UNSPECIFIED
Divisions: Div E > Production Processes
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 18:57
Last Modified: 16 Nov 2017 02:14
DOI: