Modification of carbon nanotubes by CuO-doped NiO nanocomposite for use as an anode material for lithium-ion batteries

Journal Article · Sat Jun 15 00:00:00 EDT 2013 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2013.03.036· OSTI ID:22306311

Tajammul Hussain, Syed ^[1]; Ali, Saqib ^[2]; Ahmad, Nisar ^[3]; Ali, Nisar ^[4]; Abbas, Saghir ^[2]; Ali, Zulfiqar ^[1]

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1. Nanoscience and Catalysis Division, National Centre for Physics, Islamabad 45320 (Pakistan)
2. Department of Chemistry, Quaid-e-Azam University, Islamabad (Pakistan)
3. Department of Chemistry, Hazara University, Mansehra (Pakistan)
4. Department of Physics, University of Punjab, Lahore (Pakistan)

CuO-doped NiO (CuNiO) with porous hexagonal morphology is fabricated via a modified in-situ co-precipitation method and its nanocomposite is prepared with carbon nanotubes (CNTs). The electrochemical properties of CuNiO/CNT nanocomposite are investigated by cyclic voltammetry (CV), galvanostatic charge–discharge tests and electrochemical impedance spectroscopy (EIS). Since Cu can both act as conductor and a catalyst, the CuNiO/CNT nanocomposite exhibits higher initial coulombic efficiency (82.7% of the 2nd cycle) and better capacity retention (78.6% on 50th cycle) than bare CuNiO (78.9% of the 2nd cycle), CuO/CNT (76.8% of the 2nd cycle) and NiO/CNT (77.7% of the 2nd cycle) at the current density of 100 mA /g. This high capacity and good cycling ability is attributed to the partial substitution of Cu{sup +2} for Ni{sup +2}, resulting in an increase of holes concentration, and therefore improved p-type conductivity along with an intimate interaction with CNTs providing large surface area, excellent conduction, mechanical strength and chemical stability. - Graphical abstract: The porous CuNiO/CNT nanocomposite synthesized via a modified co-precipitation method in combination with subsequent calcination was applied in the negative electrode materials for lithium-ion batteries and exhibited high electrochemical performance. - Highlights: • CuO doped NiO/CNTs nano composite is achieved via a simple co-precipitation method. • Monodispersity, shape and sizes of sample particles is specifically controlled. • Good quality adhesion between CNTs and CuNiO is visible from TEM image. • High electrochemical performance is achieved. • Discharge capacity of 686 mA h/g after 50 cycles with coulombic efficiency (82.5%)

• OSTI ID: 22306311
• Journal Information: Journal of Solid State Chemistry, Vol. 202; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANODES
CALCINATION
CARBON NANOTUBES
CATALYSTS
COMPOSITE MATERIALS
COPPER IONS
COPPER OXIDES
COPRECIPITATION
CURRENT DENSITY
DOPED MATERIALS
EFFICIENCY
ELECTRIC BATTERIES
ELECTRICAL PROPERTIES
INTERACTIONS
LITHIUM IONS
NICKEL IONS
NICKEL OXIDES
SURFACE AREA
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION