Co-La-B Katalizörünün Sentezlenmesi ve Yakıt Pilinde Kullanılması

Bu çalışmada, bir hidrojen jeneratörü tasarlamak için Co-La-B katalizörü kullanılarak katalizör miktarı, NaOHkonsantrasyonu, NaBH4 konsantrasyonu ve çözelti sıcaklığı gibi parametrelerin hidrojen üretim hızı üzerindekietkisi incelenmiştir. Hidrojen üretim reaksiyonu için aktivasyon enerjisi 40,3 kJ mol-1 olarak hesaplanmıştır. CoLa-B katalizörünün varlığında elde edilen hidrojen üretim sistemi kullanarak, polimer elektrolit membran yakıthücresi (PEMFC) yığını çalıştırılmıştır. Yerinde üretilen hidrojen, bir PEM yakıt pilinde kullanılarak o yakıt pilineait verim hesaplanmıştır. Üretilen hidrojenin zamanla akım ve gerilim üzerindeki değişimleri incelenmiştir.Yerinde üretilen hidrojenin tek hücreli PEM yakıt pilinde kullanılması ile akım ve gerilim değerlerinden, 0,65W’lık bir güç değeri hesaplanmıştır. PEM yakıt pili uygulamasında güce ve ideal voltaja göre ortalama verimdeğerleri sırasıyla %62 ve %79 olarak bulunmuştur. Elde edilen sonuçlardan, Co-La-B katalizörünün PEM yakıtpili uygulamaları için ideal bir katalizör olduğu söylenebilir.

Synthesis of Co-La-B Catalyst and Its Use in Fuel Cell

In this study, the effect of parameters such as catalyst amount, NaOH concentration, NaBH4 concentration and solution temperature on hydrogen production rate was investigated by using Co-La-B catalyst to design a hydrogen generator. The activation energy for the hydrogen production reaction was calculated as 40,3 kJ mol-1 . The polymer electrolyte membrane fuel cell (PEMFC) stack was run using the hydrogen generation system using the Co-La-B catalyst. Fuel cell efficiency was calculated by using in situ hydrogen produced in PEM fuel cell. The changes of hydrogen produced over current and voltage have been investigated. Using on-site hydrogen in a single-cell PEM fuel cell, a power value of 0,65 W was calculated from the current and voltage values. In PEM fuel cell application, average efficiency values according to power and ideal voltage were 62% and 79%, respectively. From the results, it can be said that the Co-La-B catalyst is an ideal catalyst for PEM fuel cell applications.

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