We used aqueous extract obtained from the dry silk of zea mays lea plant to synthesize Na0.57CoO2 nanoparticles and studied same for use as cathode in aqueous Na ion battery (SIB). Structural characterizations by X-ray diffraction (XRD) show that the Na0.57CoO2 can be indexed to the hexagonal structure of the P 63/mmc (no 194) space group with P2 packing phase. The scanning electron microscope...
Solid Oxide Fuel Cells (SOFCs) and Solid Oxide Electrolyser Cells (SOECs) are exciting electrochemical devices that provide unique and revolutionary solutions to some of the renewable energy challenges facing society. The architype materials used as solid electrolyte in most devices include YSZ (Yttrium stabilised Zirconia) and CaSZ (Calcium stabilised Zirconia) with the Y or Ca dopants...
Abstract
In the past decade, solar technology has emerged with the three competing technologies of crystalline semiconductors, polymeric and carbon nanostructures based. These technologies face to challenges that include cost and conversion efficiency. More recently, hybrid organic–inorganic perovskite (HOIP) materials has been proven as promising for new technologies of cost effective...
Nanostructured copper oxide has attracted several research interests over the years due to their interesting optical properties and their potential use in several electronic applications such as solar cells and gas sensors.
In this work, reverse micelle microemulsions (a bottom-up approach) and high energy milling (Top-down approach) have been employed for the production of defect-free and...
Comprehensive understanding of the average and local structure of materials plays a major role in formulating reliable deductions about the structure-property correlations. It may lead to complex structure engineering and physical property enhancement. One of the functional materials that have found extensive use in the fabrication of devices of technological importance is Bi2O3 [1]. Bi2O3...
A detailed picture of the thermally activated processes occurring at the Mn/ZnO interface was obtained by a combination of wide range of techniques. The low energy electron diffraction (LEED), the scanning tunnelling microscopy (STM) and spectroscopic techniques based on Auger electron (AES) and on high energy X-ray: X-ray photoelectron and absorption spectroscopies (HAXPES and XANES) and the...
NASICON-type LiTi2(PO4)3 (LTP) has been studied as a potential solid-state electrolyte material in Li ion batteries (LIBs), owing to its thermal stability and fast ionic mobility. 1 The structure of LTP consists of TiO6 octahedra corner-linked to PO4 tetrahedra, forming a helix about the c-axis. Li can occupy two sites in the structure: the more stable six-fold O coordinated M1 and the...
This talk presents the crystal structure dynamics as a function of temperature of non-porous borophosphates. Much of the work published on these materials has focused on investigating the synthetic approaches as well as exploring their fascinating structural chemistry. Little has been reported about their thermal expansion behaviour. This thermoresponsive behaviour revealed their thermal...
Ionic conducting heterostructures are of interest to explore interfacial effects in solid state ionics and to foster their potential deployment in clean energy technologies such as solid oxide fuel cells. How to achieve ion conduction in heterostructures is therefore a fascinating and relevant question.
In this presentation, we will report on the first realization and study of a...
The African Light Source (AfLS) Foundation is engaged in developing the case for an advanced Light Source (adLS) to be designed, constructed and operated on the African continent. The motivation is the enormous benefit to the continent from Science, Technology, Innovation and Development, especially in areas of crucial interest to Africa. There are several areas of progress recently, to note,...
