TY - JOUR
T1 - Study of poly(vinyl alcohol)/titanium oxide composite polymer membranes and their application on alkaline direct alcohol fuel cell
AU - Yang, Chun Chen
AU - Chiu, Shwu Jer
AU - Lee, Kuo Tong
AU - Chien, Wen Chen
AU - Lin, Che Tseng
AU - Huang, Ching An
PY - 2008/9/15
Y1 - 2008/9/15
N2 - The novel poly(vinyl alcohol)/titanium oxide (PVA/TiO2) composite polymer membrane was prepared using a solution casting method. The characteristic properties of the PVA/TiO2 composite polymer membrane were investigated by thermal gravimetric analysis (TGA), a scanning electron microscopy (SEM), a micro-Raman spectroscopy, a methanol permeability measurement and the AC impedance method. An alkaline direct alcohol (methanol, ethanol and isopropanol) fuel cell (DAFC), consisting of an air cathode based on MnO2/C inks, an anode based on PtRu (1:1) black and a PVA/TiO2 composite polymer membrane, was assembled and examined for the first time. The results indicate that the alkaline DAFC comprised of a cheap, non-perfluorinated PVA/TiO2 composite polymer membrane shows an improved electrochemical performances. The maximum power densities of alkaline DAFCs with 4 M KOH + 2 M CH3OH, 2 M C2H5OH and 2 M isopropanol (IPA) solutions at room temperature and ambient air are 9.25, 8.00, and 5.45 mW cm-2, respectively. As a result, methanol shows the highest maximum power density among three alcohols. The PVA/TiO2 composite polymer membrane with the permeability values in the order of 10-7 to 10-8 cm2 s-1 is a potential candidate for use on alkaline DAFCs.
AB - The novel poly(vinyl alcohol)/titanium oxide (PVA/TiO2) composite polymer membrane was prepared using a solution casting method. The characteristic properties of the PVA/TiO2 composite polymer membrane were investigated by thermal gravimetric analysis (TGA), a scanning electron microscopy (SEM), a micro-Raman spectroscopy, a methanol permeability measurement and the AC impedance method. An alkaline direct alcohol (methanol, ethanol and isopropanol) fuel cell (DAFC), consisting of an air cathode based on MnO2/C inks, an anode based on PtRu (1:1) black and a PVA/TiO2 composite polymer membrane, was assembled and examined for the first time. The results indicate that the alkaline DAFC comprised of a cheap, non-perfluorinated PVA/TiO2 composite polymer membrane shows an improved electrochemical performances. The maximum power densities of alkaline DAFCs with 4 M KOH + 2 M CH3OH, 2 M C2H5OH and 2 M isopropanol (IPA) solutions at room temperature and ambient air are 9.25, 8.00, and 5.45 mW cm-2, respectively. As a result, methanol shows the highest maximum power density among three alcohols. The PVA/TiO2 composite polymer membrane with the permeability values in the order of 10-7 to 10-8 cm2 s-1 is a potential candidate for use on alkaline DAFCs.
KW - Alkaline
KW - Composite polymer membrane
KW - Direct alcohol fuel cell (DAFC)
KW - MnO/BP2000
KW - PVA/TiO
UR - http://www.scopus.com/inward/record.url?scp=48149092085&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2008.06.011
DO - 10.1016/j.jpowsour.2008.06.011
M3 - 文章
AN - SCOPUS:48149092085
SN - 0378-7753
VL - 184
SP - 44
EP - 51
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 1
ER -
