caa a22 4500 477049982 CHVBK 20180405111338.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF00242099 doi (NATIONALLICENCE)springer-10.1007/BF00242099 Development and electrochemical studies of gas diffusion electrodes for polymer electrolyte fuel cells [Elektronische Daten] [V. Paganin, E. Ticianelli, E. Gonzalez] Electrochemical studies on low catalyst loading gas diffusion electrodes for polymer electrolyte fuel cells are reported. The best performance is obtained with an electrode formed from 20 wt% Pt/C, 0.4 mg Pt cm−2 and 1.1 mg Nafion® cm−2 in the catalyst layer and 15% PTFE in a diffusion layer of 50 µm thickness, for both the cathode and the anode. However, it is also observed that the platinum requirement can be diminished to values close to 0.2 mg Pt cm−2 in the cathode and 0.1 mg pt cm−2 in the anode, without appreciably affecting the good characteristics of the fuel cell response. The experimental fuel cell data were analysed using theoretical models of the electrode structure and of the fuel cell system. It is seen that most of the electrode systems present limiting currents and some also show linear diffusion components arising from diffusion limitations in the gas channels and/or in the thin film of electrolyte covering the catalyst particles. Chapman & Hall, 1996 Paganin V. Instituto de Quimica de São Carlos-USP, Caixa Postal 780, CEP 13560-970, São Carlos, SP, Brazil aut Ticianelli E. Instituto de Quimica de São Carlos-USP, Caixa Postal 780, CEP 13560-970, São Carlos, SP, Brazil aut Gonzalez E. Instituto de Quimica de São Carlos-USP, Caixa Postal 780, CEP 13560-970, São Carlos, SP, Brazil aut Journal of Applied Electrochemistry Kluwer Academic Publishers 26/3(1996-03-01), 297-304 0021-891X 26:3<297 1996 26 10800 https://doi.org/10.1007/BF00242099 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00242099 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Paganin V. Instituto de Quimica de São Carlos-USP, Caixa Postal 780, CEP 13560-970, São Carlos, SP, Brazil aut NATIONALLICENCE 700 1- Ticianelli E. Instituto de Quimica de São Carlos-USP, Caixa Postal 780, CEP 13560-970, São Carlos, SP, Brazil aut NATIONALLICENCE 700 1- Gonzalez E. Instituto de Quimica de São Carlos-USP, Caixa Postal 780, CEP 13560-970, São Carlos, SP, Brazil aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 26/3(1996-03-01), 297-304 0021-891X 26:3<297 1996 26 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer