000			02283cam a2200337 a 4500
003			EG-GiCUC
005			20250223031320.0
008			151015s2014 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.12.11.M.Sc.2014.Ra.P
100	0		_aRayhan Mohammad Abdo
245	1	0	_aPreparation of low hydrogen over voltage surface protected nano-structure cathode / _cRayhan Mohammad Abdo ; Supervised Ahmed Galal Helmy , Emanbellah Sayed Mettawee
246	1	5	_aتحضير قطب كاثودي منخفض فوق جهد الهيدروجين محمي السطح ذو التركيب متناهي الصغر
260			_aCairo : _bRayhan Mohammad Abdo , _c2014
300			_a136 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Physical Chemistry
520			_aDue to the shortage and the environmental problems of fossil fuel, a future perspective use of solar energy is its combination with water and its consequent electrolysis for generation of hydrogen gas, which is another form of clean energy sources. One of the main problems facing the production of hydrogen via water electrolysis is the cathodic material. Thus, development of economic, but active cathode materials is important in order to make the electrolysis process more effective. The modification of the electrodeposited Ni-Fe alloys was carried out via the addition of zinc and its subsequent leaching in an alkaline solution. The electrocatalytic performances of the modified alloys for hydrogen evolution in alkaline media had been investigated by cyclic voltammetry and Tafel linear polarization. The optimal conditions for the preparation of a modified Ni{u2013}Fe cathode are listed as pH 5, temperature 25{u00B0}C and electroplating current density 45 mA.cm⁻²
530			_aIssued also as CD
653		4	_aCyclic voltammetry
653		4	_aNano alloy
653		4	_aTafel linear polarization
700	0		_aAhmed Galal Helmy , _eSupervisor
700	0		_aEmanbellah Sayed Mettawee , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAml _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c52749 _d52749