In the present study, a nanocrystalline GeO2/C core shell was synthesized by a cost-effective and simple citric-gel method for various parameters, and the effects of these parameters on the microstructural and electrochemical properties of the GeO2/C core shell were investigated....

The present investigation evaluates the effect of milling the hydriding combustion synthesized (HCSed) MgNiC composite with NbF5 catalyst. X-ray analysis revealed that h-Mg-(1 0 1) peak positions of the ball-milled samples shifted by an amount that varied with the milling time. Morphologically,...

In this paper, we investigated the hydrogen storage and electrochemical characteristics of the bcc type Ti0.32Cr0.43−x−yV0.25FexMny (x = 0, 0.03, 0.055; y = 0, 0.03, 0.055, 0.080) alloys and their composites with the AB5 type MmNi3.99Al0.29Mn0.3Co0.6 (Mm: misch-metal) alloy. The maximum...

Mg based hydride electrodes in alkaline solution were protected by coating them with hydrogen-permeable NAFION membranes. The electrodes were fabricated by using Mg based hydrides synthesized by hydriding combustion (HC) technique. The hydriding combustion synthesized (HCSed) powders were further...

Superiority of the hydriding combustion (HC) technique over conventional metallurgical approach to the synthesis of cost-effective Mg based hydrides, which show promise as hydrogen storage materials, is well known. In the present research, we report further improvements in HC prepared Mg-based...

Magnesium may be the most promising solid-state hydrogen storage material owing to its high storage capacity (7.6 wt%) and highest volumetric density (2 times of liquid H2). On the other hand, suffers from its sluggish absorption/desorption characteristics. In the present study, the...

This study examined the hydrogen storage and electrochemical characteristics of bcc type Ti0.32Cr0.43 − xV0.25Fex (x = 0–0.08) alloys and their ball-milled composites with AB5 type LmNi41Al0.25Mn0.3Co0.65 alloy. With increasing Fe content in the bcc alloy, the hydrogen storage capacity...

This study employed a fast, simple and cost-effective hydriding combustion synthesis (HCS) to prepare nano/submicron Mg based alloys, which are the most promising solid state hydrogen storage materials owing to their high storage capacity (7.6 wt.%) and highest volumetric density. The...

In the present research work spray pyrolysis technique (SPT) is employed to synthesize GDC (10%Gd doped ceria) thin films on anode-grade-ceramic substrate (porous NiO-GDC). The film/substrate structure was characterized for their micro-structural and electrical properties along with their...

In the present research, spray pyrolysis technique is employed to synthesize 10%Gd-doped ceria (GDC) thin films on ceramic substrates with an intention to use the "film/substrate" structure in solid oxide fuel cells. GDC films deposited on GDC substrate showed enhanced crystallite...

In recent years, doped ceria is an established and promising candidate as solid electrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC). In this investigation, synthesis and characterizations of nano-crystalline Gd doped ceria, (Ce1−xGdxO2−x/2, where x = 0–0.3), prepared...

In the proposed research, it was decided to synthesize the GDC and to demonstrate its use in IT-SOFCs. Initially, it was planned to synthesize the bulk GDC and study its different properties. For this, solid state reaction method was preferred due to its cost effective nature and ease of...

Solid oxide fuel cells (SOFCs) with comparably low operating temperature play a critical role in its commercialization and reliability by allowing low-cost fabrication and a promised longer life. Recently, 10%Gd-doped ceria (GDC) has revealed its importance as solid electrolytes for intermediate...

Nano-science and technology has emerged as a frontier area of research today and hence a demand to prepare the nano-materials for the variety of application has been increased significantly to a laboratory as well as industrial level. Therefore, to fill-up these demands a synthesis technique is...

Due to need of pollution-free and efficient-power-generation devices, in past few years, pace of research has been rapidly driven by fuel cell technology. The thesis contributes in the same regard, in which conventional solid electrolyte of solid oxide fuel cell is replaced by alternate material...

High ionic conductivity of doped ceria at comparatively lower operating temperatures (not, vert, similar650 °C) makes it suitable solid oxide fuel cell (SOFC) electrolyte. In the present investigation, successful attempt has been made to synthesize Ce0.9Gd0.1O1.95 (GDC10) solid solution by cost...

The Gd doped ceria (CGO) in thin layers is of great interest for low temperature operation. In the present investigation, we report on the use of spray pyrolysis technique for the synthesis of CGO thin films. The process parameters were optimized for synthesizing Gd0.1Ce0.9O1.95 films. Films were...

The gadolinium-doped ceria (GDC) is considered as one of the most promising electrolytes for intermediate temperature solid oxide fuel cells (IT-SOFCs). Since the operating temperature of SOFC mainly depends on properties of electrolytes, the structural, morphological and electrical properties of...

Gadolinium doped ceria oxide is one of the promising materials as an electrolyte for IT-SOFCs. Ce0·9Gd0·1O1·95 (GDC10) powder was prepared by solid state reaction and sintered at 1473 K, 1573 K, 1673 K and 1773 K. All samples were studied using X-ray diffraction, scanning electron micrograph...

Intermediate temperature Solid Oxide Fuel Cell (IT-SOFC) shows number of advantages over high temperature SOFCs (HT-SOFCs), which includes smaller thermal mismatch between its components, rapid startup with less energy consumption etc. In the present paper, we are presenting the synthesis of...

Solid electrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC) is a challenge for material researchers. However, Gd doped ceria (CGO) found to be a promising electrolyte among the other competitive materials. In the present investigation, we report the structural and electrical...