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Browsing Journal Articles by Author "Zheng, Haitao"

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Capacity and charge-transport enhancement of LFP/RGO by doping with a-MnO2 in a microwave-assisted synthesis

Author: Rossouw, Claire A ; Raju, Kumar ; Zheng, Haitao ; Ozoemena, KI Date: Dec 2017 Manganese-doped lithium iron phosphate (LFMP), coated with reduced graphene oxide (RGO), has been prepared by a microwave-assisted solvothermal technique. The un-doped lithium iron phosphate material with RGO (i.e., LFP/RGO) gave a rod-like ... Read more
The effect of g-C3N4 materials on Pb(II) and Cd(II) detection using disposable screen-printed sensors

Author: Zheng, Haitao ; Ntuli, Letta ; Mbanjwa, Mesuli ; Palaniyandy, Nithyadharseni ; Smith, Suzanne ; Modibedi, Remegia M ; Land, Kevin J ; Mathe, Mahlanyane K Date: Dec 2018 The disposable electrochemical sensors were designed and fabricated onto a photo paper substrate in-house. We report a first case use of g-C3N4, which is an emerging material as the most stable carbon-like polymer, explored for application ... Read more
The effect of synthesis temperature on the properties of TiO2 (B) nanorods and its precursors as anode materials for lithium-ion batteries

Author: Ncube, Ntombizodwa M ; Zheng, Haitao Date: Jan 2020 In this work, we carried out a detailed research on the effect of synthesis temperature on the properties of TiO(sub2) (B) nanorods and its hydrogen titanate precursors. At the initial stage, hydrogen titanates (HTOs)were synthesised at ... Read more
The effect of ultrasonic cavitation on surficial properties of metals and industrial processes

Author: Zheng, Haitao ; Mathe, Mkhulu Date: Sep 2023 Ultrasonic cavitation is a phenomenon that occurs when high-frequency sound waves are introduced into a liquid medium, causing the formation and collapse of small bubbles within the liquid. These bubbles generate high-energy shock waves that ... Read more
The electrochemical effect of Al-doping on Li4Ti5O12 as anode material for lithium-ion batteries

Author: Ncube, NM ; Mhlongo, WT ; McCrindle, RI ; Zheng, Haitao Date: May 2018 This work investigates the electrochemical performance of Al-doped Li4Ti5O12 (LTO) on the Li site (Li4-xAlxTi5O12) and Ti site (Li4Ti5-xAlxO12) (x = 0.15), evaluated by galvanostatic charge-discharge tests and the electrochemical impedance ... Read more
A facile method of asymmetric ether-containing polybenzimidazole membrane for high temperature proton exchange membrane fuel cell

Author: Ou, T ; Chen, H ; Hu, B ; Zheng, Haitao ; Li, W ; Wang, Y Date: Jul 2018 A facile method has been suggested for the preparation of poly [2,20-(p-oxydiphenylene)-5,50-benzimidazole] (OPBI) membrane that comprises of dense and porous layers for high temperature proton exchange membrane fuel cells (HT-PEMFCs). The ... Read more
A green approach for enhancing the electrocatalytic activity and stability of NiFe2O4/CB nanospheres towards hydrogen production

Author: Munonde, Tshimangadzo S ; Zheng, Haitao ; Matseke, Mphoma S ; Nomngongo, PN ; Wang, Y ; Tsiakaras, P Date: Mar 2020 Among the exfoliation processes applied on layered materials, it is the first time to explore the ultrasonic exfoliation in water for improving the catalytic properties of NiFe(sub2)O(sub4)/CB (CB = carbon black) nanospheres towards the ... Read more
Growth of MnO2 nanoflakes on TiO2 nanorods for pseudocapacitor

Author: Mo, L ; Zheng, Haitao Date: Jun 2019 In this work, we report the synthesis of TiO2 (core)/MnO2(shell) nanorods by a redox reaction and TiO2 nanorods generated in-site from H-titanate nanorods during hydrothermal process. The MnO2 nanoflakes were grown densely on TiO2 nanorods ... Read more
The impact of ultrasonic parameters on the exfoliation of NiFe LDH nanosheets as electrocatalysts for the oxygen evolution reaction in alkaline media

Author: Munonde, Tshimangadzo S ; Zheng, Haitao Date: Aug 2021 The ultrasonic process has been examined to exfoliate layered materials and upgrade their properties for a variety of applications in different media. Our previous studies have shown that the ultra-sonication treatment in water without chemicals ... Read more
Influence of Co doping on physiochemical properties of MnFe2O4/C nano compounds toward oxygen reduction reaction

Author: Matseke, Mphoma, S ; Zheng, Haitao ; Mathe, Mkhulu K ; Carleschi, E ; Doyle, B Date: Dec 2021 Recently, several researchers have found that the manganese ferrite (MnFe2O4) nanoparticle can be a promising candidate for the oxygen reduction reaction (ORR). However, the MnFe2O4 nanoparticles still face challenges on their ORR activity ... Read more
Li4Ti5O12/graphene nanoribbons composite as anodes for lithium ion batteries

Author: Medina IV, PA ; Zheng, Haitao ; Fahlman, BD ; Annamalai, P ; Swartbooi, Ashton M ; Le Roux, Lukas J ; Mathe, Mahlanyane K Date: Oct 2015 In this paper, the authors report the synthesis of a Li4Ti5O12/Graphene Nanoribbons (LTO/GNRs) composite using a solid-coating method. Electron microscope images of the LTO/GNRs composite have shown that LTO particles were wrapped around ... 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
Maximization of quadruple phase boundary for alkaline membrane fuel cell using nonstoichiometric a-MnO2 as cathode catalyst

Author: Shi, X ; Ahmad, S ; Perez-Salcedo, K ; Escobar, B ; Zheng, Haitao ; Kannan, AM Date: Jan 2019 Oxygen can only be reduced at the quadruple phase boundary (catalyst, carbon support, ionomer and oxygen) of the cathode catalyst layer with non-conducting electrocatalyst. To maximize the quadruple phase boundary sites is crucial to increase ... Read more
Preparation and characterisation of porous poly(2,5benzimidazole) (ABPBI) membranes using surfactants as templates for polymer electrolyte membrane fuel cells

Author: Zheng, Haitao ; Petrik, L ; Mathe, Mahlanyane K Date: Apr 2010 The first instance synthesis of porous poly(2,5benzimidazole) (ABPBI) membranes using sodium dodecyl sulfate (SDS) surfactants as templates is reported. The membranes were characterised by SEM, TGA, DSC and tensile tests. The tensile test ... 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
Solid coated Li4Ti5O12 (LTO) using polyaniline (PANI) as anode materials for improving thermal safety for lithium ion battery

Author: Mo, L ; Zheng, Haitao Date: Nov 2020 In generally, the thermal behaviour of cathode and electrolyte are the major concerns for the safety of lithium-ion battery, In contrast to rare attention on thermal effects of anode materials. In this work, Li4Ti5O12/polyaniline (PANI@LTO) ... Read more
Solid coated Li4Ti5O12 (LTO) using polyaniline (PANI) as anodematerials for improving thermal safety for lithium ion battery

Author: Mo, L ; Zheng, Haitao Date: Nov 2020 In generally, the thermal behaviour of cathode and electrolyte are the major concerns for the safety of lithium-ion battery, In contrast to rare attention on thermal effects of anode materials. In this work, Li4Ti5O12/polyaniline (PANI@LTO) ... Read more
Thermal conductivity and stability of nano size carbon black filled PDMS: Fuel cell perspective

Author: Chen, H ; Botef, I ; Zheng, Haitao ; Maaza, M ; Vasudeva Rao, V ; Srinivasu, VV Date: 2011 Carbon black filled Polydimethylsiloxane (PDMS) was considered as a prospective bipolar plate material candidate for a Fuel Cell. In this perspective, thermal conductivity and stability of the composites were investigated. Samples with filler ... Read more
The thermal kinetics of methanol oxidation on Pt/MWCNT electrocatalysts in alkaline media

Author: Zheng, Haitao ; Modibedi, Mmalewane Date: Sep 2023 In this study, the thermal electrooxidation of methanol on a Pt/MWCNT catalyst was examined in alkaline media across the temperature range of 298-363 K. The investigation utilized cyclic voltammetry (CV), quasi-state polarization, and ... Read more
Ultrasonic exfoliation of NiFe LDH/CB nanosheets for enhanced oxygen evolution catalysis

Author: Munonde, Tshimangadzo S ; Zheng, Haitao ; Nomngongo, PN Date: Dec 2019 The oxygen evolution reaction (OER) is an important reaction in water splitting. Nickel-iron layered double hydroxide (NiFe LDH) has been considered a potential catalyst for OER. Herein, we report a simple/green approach to improve the oxygen ... Read more

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