A Binary Liquid Mixture of Bioethanol-Water and Biodiesel-Water as Fuel for NSDC-LNSDCNSDC-L Direct Ethanol-Solid Oxide Fuel Cell

This research studies the possibility on using a binary liquid mixture of bioethanol-water and biodiesel-water as fuel for a NSDC-LNSDCNSDC-L single fuel cell. The ratio of bioethanol-water was 70:30, as well as the ratio of biodiesel-water. The fuel vapor flowed into the fuel cell system under the temperatures of 673, 773 and 873 K with a flow rate of 1–1.5 ml•min-1. The highest power densities were found at 673 K which are 2.984 and 1.838 mW•cm-2 for bioethanol-water and biodiesel-water, respectively. It is a promising result for a single fuel cell test with a very low rate of liquid fuel flow. Meanwhile, open circuit voltage (OCV) of the single fuel cell with bioethanol-water fuel is 1.439 V which is close to the theoretical OCV. However, OCV of the single fuel cell with biodiesel-water as fuel is 0.710 V which is lower than the theoretical OCV. Cell polarization seems still being the problem causing voltage loss during single fuel cell test.

Phase separation of binary mixtures induced by soft centrifugal fields

We use the model system ethanol–dodecane to demonstrate that giant critical fluctuations induced by easily accessible weak centrifugal fields as low as 2000g can be observed above the miscibility gap even far from the critical point of a binary liquid mixture.