The charge-discharge and corrosion processes of alloyed zinc with antimony in alkaline electrolytes were studied without and with adding sulfide ions. The obtained results reveal that the density of corrosion current (Icorr.) decays gradually, while the efficiency value of inhibition rises as a result of increasing S2 ions concentration. The process of an anodic reaction is more impacted than that ... Read more

INHIBITIVE ACTION OF SULFIDE IONS ON CORROSION AND ENHANCING CHARGE-DISCHARGE EFFICIENCY OF ZINC AND ZINC-INDIUM ALLOY AS ANODE FOR ALKALINE BATTERIES The obtained data reveal that the coverage of surface (_θ_) and protection efficiency (_η_%) for the studied electrodes increases gradually as the inhibitor concentration increases. Tafel plot is carried out at variant temperatures in the investigated basic electrolyte containing ... Read more

طرق التخلص من المخلفات الكيميائية المختبرية هدى عبد الشافى شلقامى قسم الكيمياء-كلية العلوم- جامعة سوهاج ملخص البحث التخلص السليم من النفايات يتطلب توافر المعلومات بشأن خصائص النفايات المشار إليها وتحديد كافة المواد الكيميائية المستخدمة أو التي يتم تحضيرها في المختبر. وبوجه عام، فإن ذلك يتطلب جمع النفايات الكيميائية وعزلها داخل حاويات مميزة بإشارات محدده. تتمثل أهمية تحديد النفايات بطريقة مناسبه ... Read more

Abstract ZINC IS ONE OF THE MOST COMMONLY USED AND IMPORTANT METALS IN ALKALINE BATTERIES. FOR MORE THAN A CENTURY, ALKALINE BATTERIES HAVE PLAYED A SIGNIFICANT PART IN THE SPAN OF ELECTRICAL ENERGY SYSTEMS. IT HAS BEEN REVEALED THAT INCREASING BATTERY LIFE WHILE MAINTAINING ZINC'S SACRIFICIAL PROTECTION REQUIRES THE ADDITION OF A SMALL AMOUNT OF INDIUM OR ANTIMONY AS AN ... Read more

دور الطاقة المتجددة في تحقيق التنمية المستدامة هدى عبد الشافى شلقامى قسم الكيمياء-كلية العلوم-جامعة سوهاج ملخص الدراسة يواجه العالم تحديا بالغ الاهمية في خلق توازن بين التنمية المستدامة و بين الحفاظ على البيئة, و نظرا لما للطاقة التقليدية من تداعيات و اثار سواء من ناحية استنزافها او ما ينتج عنها من ملوثات ضارة بالبيئة و صحة الانسان, فان العالم يتجه ... Read more

Abstract The passivation of pure zinc surface can be considered a problem of Zn utilization as an anode in alkaline batteries due to its small capacity. Therefore, to improve the discharge capacity of the Zn anode, minor Sb alloying with Zn was investigated. The impact of trace Sb alloyed with Zn on the passivity and the breakdown of the colloidal ... Read more

ABSTRACT Aluminum and its alloys have a low atomic weight and high strength to density ratio. These properties make them very useful for construction of parts in the automotive industry, such as engine blocks or pistons. Aluminum is prone to corrosion due to its negative standard potential of 1.66 V vs. NHE. In addition, the corrosion resistance of aluminum has ... Read more

Abstract Zn is utilized as an anode in alkaline batteries because of its propensity to produce a passive colloidal layer on its surface. Then the surface should be reactivated in the passive region. Therefore, the passive state on the surface can be significantly hindered by utilizing a tiny percentage of Sb alloyed with Zn. Accordingly, the effect of minor Sb ... Read more

Abstract: In alkaline batteries, zinc is one of the most commonly used and significant metals. It has been discovered that adding a small amount of indium or antimony as an alloying element to zinc enhances battery longevity while maintaining zinc's sacrificial protection. Electrochemically examined using Galvanostatic Charge Discharge techniques, charge-discharge performance for Zn, Zn-1% In, and Zn-1% Sb alloys in ... Read more

The improvements in understanding lead/acid batteries have been started within the last fifteen years. The technologies and designs of the battery will incorporate more and thinner plates with grids produced from continuous processes using stronger, more corrosion-resistant grid alloys and having longer life at elevated temperature. Battery grids will become having higher utilization of active material and producing more uniform ... Read more