The analysis of the impact cathode catalyst layer pore structure on membrane electrode assembly (MEA) cell performance a PEMFC is presented. In this study, pristine CMK-3 carbon support material with well-defined in 3–6 nm range together two nitrogen-doped variants analyzed against commercial black to achieve better understanding porosity-performance relations. We used chemically N-doped learn ...

a modified electrode was prepared by modification of the carbon paste electrode (cpe) with graphene nano-sheets. the fabricated modified electrode exhibited an electrocatalytic activity toward gallic acid (ga) oxidation because of good conductivity, low electron transfer resistance and catalytic effect. the graphene modified cpe had a lower overvoltage and enhanced electrical current respect to...

Carbon Nanofibers In article 2200408, Matthias Wessling and co-workers demonstrate that carbon nanofibers are grown on a nickel foam as binder-free electrode for electrochemical advanced oxidation processes. The C/Ni combination provides excellent reduction rates of O2 to H2O2, which is realized by multiple reaction pathways, being the two-electron pathway materials one-electron through •O2 rad...

Optimal reservoir management requires reliable reservoir performance forecasts with as little uncertainty as possible. There is a need for improved techniques for dynamic data intergration to construct realistic reservoir models by using geostatistical techniques. This paper gives a method to create porosity models that honor interpreted pore volumes from well test data. Well porosity data, sei...

As a security unit for the territorial waters of Republic Indonesia, Indonesian Navy is required combat readiness to carry out operations quickly and precisely. It very important Navy's ABK Soldiers Indonesia's defense equipment warships in carrying activities Indonesia. This study discusses underwater wet welding anticipating an emergency if ship's hull hit by collision so that has cracks or h...