Niobium phosphates as an intermediate temperature proton conducting electrolyte for fuel cells

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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@article{e9fb55b0a3534effb0ea5dba23006ae7,
title = "Niobium phosphates as an intermediate temperature proton conducting electrolyte for fuel cells",
publisher = "Royal Society of Chemistry",
author = "Yunjie Huang and Qingfeng Li and Jensen, {Annemette Hindhede} and Min Yin and Jensen, {Jens Oluf} and Erik Christensen and Chao Pan and Niels Bjerrum and Wei Xing",
note = "© Royal Society of Chemistry",
year = "2012",
doi = "10.1039/c2jm34704k",
volume = "22",
number = "42",
pages = "22452--22458",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",

}

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 -