Browsing Journal Articles by Subject "Electrochemistry"

Now showing items 1-13 of 13

Characterization of LT-LiXO1-YNIYO2 electrodes for rechargeable lithium cells

Author: Gummow, RJ ; Thackeray, MM Date: Dec 1993 LT-LiC0.9Ni0.1O2 prepared at 400 degrees C with a structure that is intermediate between an ideal lithiated spinel and a layered structure has been investigated as an electrode in rechargeable Lithium cells; it delivers a voltage vs. pure ... Read more
The effect of reducing agents on the electronic, magnetic and electrocatalytic properties of thiol-capped Pt/Co and Pt/Ni nanoparticles

Author: Mathe, Ntombizodwa R ; Nkosi, SS ; Motaung, DE ; Scriba, Manfred R ; Coville, NJ Date: May 2015 The electronic, magnetic and electrocatalytic properties of bimetallic thiol-capped Pt/Co and Pt/Ni nanoparticles were synthesised using two reducing agents, NaBH(sub4) and N(sub2)H(sub4). X-ray diffraction analysis of the nanoparticles showed ... Read more
Investigation of spinel-related and orthorhombic LiMNO2 cathodes for rechargeable lithium batteries

Author: Gummow, RJ ; Thackeray, MM Date: May 1994 Cathode materials that have been synthesized by reduction of lithium-manganese- Cathode materials that have been synthesized by reduction of lithium-manganese-oxide and manganese-oxide precursors with hydrogen at 300 to 350-degrees-C, and ... Read more
Laser deposition of (Cu + Mo) alloying reinforcements on AA1200 substrate for corrosion improvement

Author: Popoola, API ; Pityana, Sisa L ; Popoola, OM Date: Oct 2011 Poor corrosion performance of aluminium alloys in marine environment has been a subject of intensive research recently. Aluminium substrate was alloyed with a combination of two metallic powders (Cu + Mo) using an Nd: YAG solid state laser. ... 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
Metal (Co, Fe) tribenzotetraazachlorin-fullerene conjugates: impact of direct p-bonding on the redox behaviour and oxygen reduction reaction

Author: Ozoemena, KI ; Mamuru, SA ; Fukuda, T ; Kobayashi, N ; Nyokong, T Date: Jun 2009 Novel hexabutylsulphonyltribenzotetraazachlorin–fullerene (C60) complexes of iron (FeHBSTBTAC–C60) and cobalt (CoHBSTBTAC–C60) have been synthesized and their electrochemistry and oxygen reduction reaction (ORR) compared with their ... Read more
Microwave-assisted synthesis of high-voltage nanostructured LiMn1.5Ni0.5O4 spinel: tuning the Mn3+ content and electrochemical performance

Author: Jafta, CJ ; Mathe, Mahlanyane K ; Manyala, N ; Roos, WD ; Ozoemena, KI Date: Aug 2013 The LiMn1.5Ni0.5O4 spinel is an important lithium ion battery cathode material that has continued to receive major research attention because of its high operating voltage (∼4.8 V). This study interrogates the impact of microwave irradiation ... Read more
Printed paper–based electrochemical sensors for low-cost point-of-need applications

Author: Smith, Suzanne ; Madzivhandila, Phophi ; Ntuli, Letta ; Bezuidenhout, Petrone H ; Zheng, Haitao ; Land, Kevin J Date: Feb 2019 Paper-based microfluidics is a rapidly developing field with applications for point-of-care disease and environmental diagnostics. In parallel, printed electronics has grown swiftly, particularly for wearable technologies. By combining these ... Read more
Probing the electrochemistry of MXene (Ti2CTx)/electrolytic manganese dioxide (EMD) composites as anode materials for lithium-ion batteries

Author: Melchior, SA ; Palaniyandy, Nithyadharseni ; Sigalas, I ; Iyuke, SE ; Ozoemena, KI Date: Feb 2019 The performance of MXenes (Ti2CTx) combined with electrolytic manganese dioxide (EMD) in three different weight ratios (i.e. MXene:EMD = 20:80; 50:50; 80:20) were examined as anode material for Lithium-ion batteries (LIBs). A study of the ... Read more
Ramsdellite-MnO2 for lithium batteries: The ramsdellite to spinel transformation

Author: Thackeray, MM ; Rossouw, MH ; Gummow, RJ ; Liles, DC ; Pearce, K ; De Kock, A ; David, WIF ; Hull, s Date: Jun 1993 A pure and highly crystalline form of ramsdellite-MnO2 has been synthesized by acid treatment of the spinels LiMn2O4 and Li2Mn4O9 at 95°C. Although the ramsdellite-MnO2 framework remains intact on lithiation at 70°C, the hexagonally-close-packed ... Read more
Synthesis and electrochemical properties of LiNi0.4Mn1.5Cr0.1O4 and Li4Ti5O12

Author: Liu, GQ ; Wen, L ; Liu, GY ; Luo, HZ ; Ma, BY ; Wu, QY ; Tian, YW Date: Aug 2011 Spinel compound LiNi0.4Mn1.5Cr0.1O4 (LNMCO) and Li4Ti5O12 (LTO) were synthesized by the sol-gel method and the solid-state method, respectively. The particle sizes of the products LiNi0.4Mn1.5Cr0.1O4 and Li4Ti5O12 were 0.5 to 2 um and 0.5 to ... Read more
Synthesis, electrochemistry and cytotoxicity of ferrocene-containing amides, amines and amino-hydrochlorides

Author: Nonjola, Patrick NT ; Siegert, U ; Swarts, JC Date: Feb 2015 Ferrocenylamides, Fc–(CH(sub2))subn–CONH(sub2) with n = 0 (3a), 1 (3b), 2 (3c), and 3 (3d) and Fc =ferrocenyl = FeII(C(sub5)H(sub5))(C(sub5)H(sub4)), were synthesised by reacting aqueous ammonia with the appropriate acid chlorides, ... Read more
Synthesis, photophysical and preliminary investigation of the dye-sensitized solar cells properties of functionalized anthracenyl-based bipyridyl and phenanthrolyl Ru(II) complexes

Author: Adeloye, AO ; Ajibade, PA ; Cummings, FR ; Le Roux, Lukas J ; Mamphweli, SN ; Meyer, EL Date: Jan 2013 Four new amphiphilic ligands: 4-(2,3-dimethylacrylic acid)-2,2′-bipyridine (L(sub1), 4-(9-anthracenyl-10-(2,3-dimethylacrylic acid)-2,2′-bipyridine (L(sub2), 5-(2,3-dimethylacrylic acid)-1,10-phenanthroline (L(sub3) and 5-(9-anthracenyl-10- ... Read more

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Browsing Journal Articles by Subject "Electrochemistry"

Browsing Journal Articles by Subject "Electrochemistry"

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This Collection

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