High-temperature protonic conduction in LaP3O9

Koji Amezawa, Yukinori Kitajima, Yoichi Tomii, Naoichi Yamamoto

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

A novel proton-conducting material based on LaP3O9 was developed and its electrical conduction properties were investigated by measuring conductivities under 0.4-5 kPa of p(H2O) and 0.01-100 kPa of p(O2) at 573-973 K. LaP3O9 conducted protons dominantly by partial substitution of Sr for La. Conductivities of the 1 mol % Sr-doped LaP3O9 were 7 × 10-7 to 3 × 10-4 S cm-1 at 573-973 K, and were relatively higher than those of other proton-conducting rare earth phosphates such as LaPO4 and La7P3O18. Conductivities of the Sr-doped LaP3O9 were almost independent of p(H 2O), suggesting dominant protonic conduction even under low p(H 2O) conditions.

Original languageEnglish
Article number4
Pages (from-to)A511-A514
JournalElectrochemical and Solid-State Letters
Volume7
Issue number12
DOIs
Publication statusPublished - 2004 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'High-temperature protonic conduction in LaP<sub>3</sub>O<sub>9</sub>'. Together they form a unique fingerprint.

  • Cite this