Niobium phosphates as an intermediate temperature proton conducting electrolyte for fuel cells
Publication: Research - peer-review › Journal article – Annual report year: 2012
Standard
Niobium phosphates as an intermediate temperature proton conducting electrolyte for fuel cells. / Huang, Yunjie; Li, Qingfeng; Jensen, Annemette Hindhede; Yin, Min; Jensen, Jens Oluf; Christensen, Erik; Pan, Chao; Bjerrum, Niels; Xing, Wei.
In: Journal of Materials Chemistry, Vol. 22, No. 42, 2012, p. 22452-22458.Publication: Research - peer-review › Journal article – Annual report year: 2012
Harvard
APA
CBE
MLA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Niobium phosphates as an intermediate temperature proton conducting electrolyte for fuel cells
A1 - Huang,Yunjie
A1 - Li,Qingfeng
A1 - Jensen,Annemette Hindhede
A1 - Yin,Min
A1 - Jensen,Jens Oluf
A1 - Christensen,Erik
A1 - Pan,Chao
A1 - Bjerrum,Niels
A1 - Xing,Wei
AU - Huang,Yunjie
AU - Li,Qingfeng
AU - Jensen,Annemette Hindhede
AU - Yin,Min
AU - Jensen,Jens Oluf
AU - Christensen,Erik
AU - Pan,Chao
AU - Bjerrum,Niels
AU - Xing,Wei
PB - Royal Society of Chemistry
PY - 2012
Y1 - 2012
N2 - A new proton conductor based on niobium phosphates was synthesized using niobium pentoxide and phosphoric acid as precursors. The existence of hydroxyl groups in the phosphates was confirmed and found to be preserved after heat treatment at 500 °C or higher, contributing to an anhydrous proton conductivity of 1.6 × 10−2 S cm−1 at 250 °C. The conductivity increased with water content in the atmosphere and reached 5.8 × 10−2 S cm−1 under pure water vapour at the same temperature. The conductivity showed good stability in the low water partial pressure range of up to 0.05 atm. The metal phosphates are of high interest as potential proton conducting electrolytes for fuel cells operational in an intermediate temperature range.
AB - A new proton conductor based on niobium phosphates was synthesized using niobium pentoxide and phosphoric acid as precursors. The existence of hydroxyl groups in the phosphates was confirmed and found to be preserved after heat treatment at 500 °C or higher, contributing to an anhydrous proton conductivity of 1.6 × 10−2 S cm−1 at 250 °C. The conductivity increased with water content in the atmosphere and reached 5.8 × 10−2 S cm−1 under pure water vapour at the same temperature. The conductivity showed good stability in the low water partial pressure range of up to 0.05 atm. The metal phosphates are of high interest as potential proton conducting electrolytes for fuel cells operational in an intermediate temperature range.
U2 - 10.1039/c2jm34704k
DO - 10.1039/c2jm34704k
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
SN - 0959-9428
IS - 42
VL - 22
SP - 22452
EP - 22458
ER -