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Electrochemical deposition of Fe3O4 nanoparticles and flower-like hierarchical porous nanoflakes on 3D Cu-cone arrays for rechargeable lithium battery anodes

Title
Electrochemical deposition of Fe3O4 nanoparticles and flower-like hierarchical porous nanoflakes on 3D Cu-cone arrays for rechargeable lithium battery anodes
Authors
Qian, XinXu, QianHang, TaoShanmugam, SangarajuLi, Ming
DGIST Authors
Shanmugam, Sangaraju
Issue Date
2017-05-05
Citation
Materials and Design, 121, 321-334
Type
Article
Article Type
Article
Keywords
AnodesCone ArraysConstant Current DensityCu Micro Cone ArraysCyclic VoltammetryDepositionElectric BatteriesElectrochemical DepositionElectrodepositionElectrodepositionElectrodesElectrolytesEthanolaminesFe3O4 NanoparticleFe3O4 NanoparticlesField Emission Scanning Electron MicroscopesFlower like Fe3O4 NanoflakeGalvanostatic Charge/DischargeGas SensorsHigh CapacityHigh Resolution Transmission Electron MicroscopyIon BatteriesLithium Ion BatteriesLithium Ion BatteryLithium AlloysNanoparticlesNano StructuresNanowire ArraysPerformanceRechargeable Lithium BatteryReductionReductionReinforcementScanning Electron Microscopy (SEM)Secondary BatteriesStabilityStorage PropertiesTransmission Electron MicroscopyTriethanolamineX Ray DiffractionX Ray Photoelectron Spectroscopy (XPS)
ISSN
0264-1275
Abstract
A novel 3D nanostructured Fe3O4/Cu-cone arrays (Cu-CAs) anode is prepared by template-free chemical deposition of Cu-CAs on a flat Cu current collector followed by galvanostatic electrodeposition of polycrystalline Fe3O4 nanoparticles (NPs) and Fe3O4 nanoflakes (NFs) from electrolyte containing 0.1?M tri-ethanol-amine (TEA) and 0.2?M TEA, respectively. The developed anodes are characterized by X-ray diffraction, field emission scanning electron microscope, transmission electron microscopy and X-ray photoelectron spectroscopy. Galvanostatic charge/discharge tests are carried out to evaluate the cycling performance of all the anodes at a constant current density of 680?mA?g??1 and cyclic voltammetry measurements are performed to characterize the charge/discharge potentials. The Fe3O4 NPs/Cu-CAs anode fabricated by 90?s electrodeposition exhibits the best performance with a reversible discharge capacity of 442.96?mAh?g??1 after 100 cycles at 1 C-rate due to the optimal synergistic effect of crystallinity and reinforcement effect of Cu-CAs substrate. While the better performance of Fe3O4 NFs/Cu-CAs anode fabricated by 120?s electrodeposition is attributable to the enhanced surface porosity and reinforcement effect of Cu-CAs. However, the comparison between anodes electrodeposited with 0.1?M and 0.2?M TEA indicates that the reinforcement effect of Cu-CAs plays the dominant role in determining the cycling performance of developed Fe3O4/Cu-CAs anodes. ? 2017 Elsevier Ltd
URI
http://hdl.handle.net/20.500.11750/4042
DOI
10.1016/j.matdes.2017.02.080
Publisher
Elsevier Ltd
Related Researcher
Files:
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Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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