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Browsing by Impact Area "Hydrogen SA"

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Co-pelletization of a zirconium-based metalorganic framework (UiO-66) with polymer nanofibers for improved useable capacity in hydrogen storage

Author: Bambalaza, Sonwabo E ; Langmi, HW ; Mokaya, R ; Musyoka, Nicholas M ; Khotseng, LE Date: Dec 2020 We report on a concept of co-pelletization using mechanically robust hydroxylated UiO-66 to develop a metal-organic framework (MOF) monolith that contains 5 wt% electrospun polymer nanofibers, and consists of an architecture with alternating ... Read more
Enhanced low-humidity performance in a proton exchange membrane fuel cell by developing a novel hydrophilic gas diffusion layer

Author: Hou, S ; Ye, Y ; Liao, S ; Ren, Jianwei ; Wang, H ; Yang, P ; Du, K ; Li, J ; Peng, H Date: Jan 2020 An ultrathin layer of hydrophilic titanium dioxide (TiO2) is coated on the gas diffusion layer (GDL) to enhance the performance of a proton exchange membrane fuel cell (PEMFC) at low relative humidity (RH) and high cell temperature. Both of ... Read more
Experimental demonstration of dynamic temperature-dependent behavior of UiO-66 metal-organic framework: Compaction of hydroxylated and dehydroxylated forms of UiO-66 for high-pressure hydrogen storage

Author: Bambalaza, Sonwabo E ; Langmi, HW ; Mokaya, R ; Musyoka, Nicholas M ; Khotseng, LE Date: May 2020 High-pressure (700 MPa or ∼100 000 psi) compaction of dehydroxylated and hydroxylated UiO-66 for H2 storage applications is reported. The dehydroxylation reaction was found to occur between 150 and 300 °C. The H2 uptake capacity of powdered ... Read more
A facile segregation process and restoration of LiMn2O4 cathode material from spent lithium-ion batteries

Author: Palaniyandy, Nithyadharseni ; Rambau, Khavharendwe MA ; Musyoka, Nicholas M ; Ren, Jianwei Date: Apr 2020 Due to its three-dimensional tunnel structure, the spinel LiMn2O4 (LMO) cathode material is highly favourable for the migration of lithium ions. Thus, LMO has been used as a commercial cathode material for the electronic devices such as mobile ... Read more
Microwave irradiation-assisted synthesis of zeolites from coal fly ash: An optimization study for a sustainable and efficient production process

Author: Makgabutlane, B ; Nthunya, LN ; Nxumalo, EN ; Musyoka, Nicholas M ; Mhlanga, SD Date: Sep 2020 Class F South African coal fly ash was used as a precursor for the synthesis of zeolite A via complete microwave irradiation. To attain optimal conditions for the synthesis of zeolite A with minimum impurities, the microwave synthesis time, ... Read more
Recent advances on thermal energy storage using metal-organic frameworks (MOFs)

Author: Makhanya, N ; Oboirien, B ; Ren, J ; Musyoka, Nicholas M ; Sciacovelli, A Date: Feb 2021 The development of novel efficient materials for thermal energy storage (TES) is an important step in the storage and utilisation of renewable energy. During the charging period, TES process stores heat and later releases it during the ... Read more
Synthesis of activated carbon from high-carbon coal fly ash and its hydrogen storage application

Author: Musyoka, Nicholas M ; Wdowin, M ; Rambau, Khavharendwe MA ; Franus, W ; Panek, R ; Madej, J ; Czarna-Juszkiewicz, D Date: Aug 2020 Activated carbons (ACs) have desirable characteristics that make them attractive for many industrial applications. In order to reduce their production cost, there is always a need to find alternative low-cost feedstock precursors. Nowadays ... Read more

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Browsing by Impact Area "Hydrogen SA"

Browsing by Impact Area "Hydrogen SA"

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