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Browsing by Author "Ozoemena, Kenneth I"

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The effects of morphology re-arrangements on the pseudocapacitive properties of mesoporous molybdenum disulfide (MoS2) nanoflakes

Author: Khawula, TNY ; Raju, Kumar ; Franklyn, PJ ; Sigalas, I ; Ozoemena, Kenneth I Date: Jul 2016 Mesoporous molybdenum disulfide (MoS(sub2)) with different morphologies have been prepared via hydrothermal method using different solvents, water or water/acetone mixture. The MoS(sub2) obtained with water alone gave a graphene-like nanoflakes ... Read more
Facile synthesis of nanosheet-like CuO film and its potential application as a high-performance pseudocapacitor electrode

Author: Nwanya, AC ; Obi, D ; Ozoemena, Kenneth I ; Osuji, RU ; Awada, C Date: Apr 2016 We describe the chemical synthesis of binderless and surfactant free CuO films for pseudocapacitive applications. Nanosheet-like and nanorod-like CuO films are deposited on indium tin oxide (ITO) substrates using the successive ionic layer ... Read more
High-performance Mn3O4/onion-like carbon (OLC) nanohybrid pseudocapacitor: Unravelling the intrinsic properties of OLC against other carbon supports

Author: Makgopa, K ; Raju, Kumar ; Ejikeme, PM ; Ozoemena, Kenneth I Date: Jun 2017 The electrochemical performance of the tetragonal hausmannite Mn3O4, when embedded on various carbon materials, onion-like carbon (OLC), carbon nanotubes (CNT), reduced graphene oxide (RGO) and activated carbon (AC) (i.e., OLC/Mn3O4, CNT/Mn3O4, ... Read more
Manganese-enriched electrochemistry of LiFePO4/RGO nanohybrid for aqueous energy storage

Author: Rossouw, Claire A ; Raju, Kumar ; Zheng, Haitao ; Ozoemena, Kenneth I Date: Jul 2017 Manganese-doped lithium iron phosphate (LFMP) integrated with reduced graphene oxide (RGO) has been prepared via microwave-assisted synthesis and investigated as lithium-ion energy storage system in aqueous Li2SO4 electrolyte. The doping of ... Read more
Microwave-enhanced electrochemical cycling performance of the LiNi0.2Mn1.8O4 spinel cathode material at elevated temperature

Author: Raju, Kumar ; Nkosi, FP ; Viswanathan, E ; Mathe, Mahlanyane K ; Damodaran, K ; Ozoemena, Kenneth I Date: Apr 2016 The well-established poor electrochemical cycling performance of the LiMn(sub2)O(sub4) (LMO) spinel cathode material for lithium-ion batteries at elevated temperature stems from the instability of the Mn(sup3+) concentration. In this work, a ... Read more
Molten salt-directed synthesis method for LiMn2O4 nanorods as a cathode material for a lithium-ion battery with superior cyclability

Author: Kebede, Mesfin A ; Ozoemena, Kenneth I Date: Feb 2017 A molten salt synthesis technique has been used to prepare nanorods of Mn2O3 and single-crystal LiMn2O4 nanorods cathode material with superior capacity retention. The molten salt-directed synthesis involved the use of NaCl as the eutectic ... Read more
Nanomaterials in Advanced Batteries and Supercapacitors

Author: Ozoemena, Kenneth I ; Chen, S Date: 2016 This book provides an authoritative source of information on the use of nanomaterials to enhance the performance of existing electrochemical energy storage systems and the manners in which new such systems are being made possible. The book ... Read more
Nanoporous copper-cobalt mixed oxide nanorod bundles as high performance pseudocapacitive electrodes

Author: Nwanya, AC ; Awada, C ; Obi, D ; Raju, Kumar ; Ozoemena, Kenneth I ; Osuji, RU ; Ruediger, A ; Maaza, M ; Rosei, F ; Ezema, FI Date: Feb 2017 We used a simple, cost effective and scalable chemical method to deposit mixed oxides of copper and cobalt on indium tin oxide (ITO) and stainless steel (ss) substrates. The deposited mixed oxides of Cu-Co and Co-Cu exhibit uniform surface ... Read more
Nanostructured platinum-free electrocatalysts in alkaline direct alcohol fuel cells: catalyst design, principles and applications

Author: Ozoemena, Kenneth I Date: 2016 The alkaline direct alcohol fuel cell (ADAFC) is an environmentally friendly electrochemical energy source that can drive a plethora of consumer and portable electronics. Research in ADAFCs has continued to attract major attention due to their ... Read more
Stable nickel-substituted spinel cathode material (LiMn1.9Ni0.1O4) for lithium-ion batteries obtained by using a low temperature aqueous reduction technique

Author: Kunjuzwa, Niki ; Kebede, Mesfin A ; Ozoemena, Kenneth I ; Mathe, Mahlanyane K Date: Nov 2016 A nickel substituted spinel cathode material (LiMn1.9Ni0.1O4) with enhanced electrochemical performance was successfully synthesized by using a locally-sourced, low-cost manganese precursor, electrolytic manganese dioxide (EMD), and NiSO4·6H2O ... Read more c b

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Browsing by Author "Ozoemena, Kenneth I"

Browsing by Author "Ozoemena, Kenneth I"

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All of ResearchSpace

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