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|標題:||Effect of Hygroscopic Platinum/Titanium Dioxide Particles in the Anode Catalyst Layer on the PEMFC Performance||作者:||Chao, W.K.
|關鍵字:||anodes;catalysts;contact angle;electrical resistivity;electrochemical electrodes;platinum;proton exchange membrane fuel;cells;titanium compounds;wetting;membrane fuel-cells;water management;composite membranes;relative-humidity;cathode catalyst;high-temperature;support;electrolyte;methanol;tio2||Project:||Journal of the Electrochemical Society||期刊/報告no：:||Journal of the Electrochemical Society, Volume 157, Issue 7, Page(s) B1012-B1018.||摘要:||
This study investigates the feasibility of adding platinum (Pt)/titanium dioxide (TiO(2)) particles into the anode catalyst layer to improve the performance of proton exchange membrane fuel cells. The effects of adding Pt/TiO(2) in the catalyst layer on three critical factors, namely, the wettability, the electrical resistance, and the loading of Pt/TiO(2) particles, were also evaluated. It was observed that the water contact angles of these catalyst layers were decreased as the weight percentage of Pt/TiO(2) particles increased. Similarly, the electrochemically active surface areas prepared by these catalyst inks were decreased with the increase in Pt/TiO(2) addition. Single cell performance with various amounts of Pt/TiO(2) particles in the anode catalyst layer was investigated under different temperatures of anode humidifier. The cell with 5% Pt/TiO(2) particle addition in the anode catalyst layer revealed the best performance at anode humidifier temperatures ranging from 25 to 75 degrees C. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3428725] All rights reserved.
|Appears in Collections:||工學院|
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