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Electrochemical study of different membrane materials for the fabrication of stable,reproducible and reusable reference electrode

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Journal of Energy Chemistry 2020年第10期29卷 33-41页

作者： Nawar K.Al-Shara Farooq Sher sania z.iqbal zaman Sajid George z.Chen Department of Chemical and Environmental Engineering University of NottinghamUniversity ParkNottingham NG72RDUnited Kingdom School of Mechanical Aerospace and Automotive EngineeringFaculty of EngineeringEnvironmental and ComputingCoventry UniversityCoventry CV12JHUnited Kingdom Department of Biochemistry University of AgricultureFaisalabad 38000Pakistan Department of Process Engineering Memorial University of NewfoundlandSt John’s Newfoundland A1B 3×5Canada

Fabrication of stable,reproducible and reusable reference electrodes for low energy and high-temperature steam splitting is of great interest for hydrogen fuel production without anthropogenic carbon dioxide(CO2)*** study has been conducted for the detection of suitable material for the fabrication of novel reference *** the present scenario,this research is designed to fabricate a novel nickel reference electrode by using operating conditions of eutectic molten hydroxide(NaOH-KOH,49-51 mol%)at temperature 300℃in an ion-conducting membrane of alumina and mullite ***,the designed nickel reference electrode has been examined for its reusability and stability by using electrochemical technique and cyclic *** scans of cyclic voltammetry are performed for both membrane fabricated reference electrode.A slight positive shift in oxidation peaks is observed for mullite membrane electrode(64 mV from scan 1 to 5).The stability measurements are noted by changing the scan rate between 50 and 150 mV s−***,the results show that the Ni/Ni(OH)2 reference electrode covered with a mullite membrane is stable and reusable at 300℃temperature without any *** stability and reusability of prepared nickel reference electrode covered by mullite tube in the eutectic molten hydroxide were up to 9 days to carry out an electrochemical investigation,while for alumina tube reference electrode the stability and reliability were up to 3 *** internal electrolytic material and ionic conductance can play an important role for future studies with this reference electrode along with optimisation of temperature and scan rate parameters.

关键词： Renewable energy Hydrogen production Electrode process Cyclic voltammetry Reference electrode and Molten salts

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Design and optimization of electrochemical cell potential for hydrogen gas production

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Journal of Energy Chemistry 2021年第1期30卷 421-427,I0013页

作者： Nawar KAl-Shara Farooq Sher sania ziqbal Oliver Curnick George zChen Department of Chemical and Environmental Engineering Faculty of EngineeringUniversity of NottinghamUniversity ParkNottingham NG72RDUK School of Mechanical Aerospace and Automotive EngineeringFaculty of EngineeringEnvironmental and ComputingCoventry UniversityCoventry CV12JHUK Department of Biochemistry University of AgricultureFaisalabad 38000Pakistan Institute for Future Transport and Cities Coventry UniversityCoventry CV15FBUK Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaUniversity ParkNingbo 315100China

This study deals with the optimization of best working conditions in molten melt for the production of hydrogen(H2) *** research has been carried out on how electrochemical process occurs through steam splitting via molten hydroxide.54 combinations of cathode,anode,temperature and voltage have been investigated for the optimization of best working conditions with molten hydroxide for hydrogen gas *** these electrochemical investigations were carried out at 225 to 300℃ temperature and 1.5 to 2.5 V applied voltage *** current efficiency of 90.5,80.0 and 68.6% has been achieved using stainless steel anodic cell with nickel,stainless steel and platinum working cathode *** nickel cathode,an increase in the current directly affected the hydrogen gas flow rate at *** can be hypothesized from the noted results that increase in current is directly proportional to operating temperature and applied *** values were noted when the applied voltages increased from 1.5 to 2.5 V at 300℃,the flow rate of hydrogen gas increased from 1.5 to 11.3 cm^(3) min^(-1),1.0 to 13 cm^(3) min^(-1) in case of electrolysis@stainless steel and@graphite anode *** is observed that the current efficiency of stainless steel anodic cell was higher than the graphite anodic ***,steam splitting with the help of molten salts has shown an encouraging alternate to current methodology for H2 fuel production.

关键词： Sustainable energy Splitting steam Electrolysis Hydrogen gas production Electrochemical cell and Variable cathodes

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