标题： 晶格体积和应变对BaCeY氧化物陶瓷质子导体电导率的影响 显示英文标题

标题： Effect of lattice volume and strain on the conductivity of BaCeY-oxide ceramic proton conductors

摘要： 原位电化学阻抗谱被用于研究晶格体积和应变对掺钇氧化钡铈质子导体质子电导率的影响，通过施加高达1.25 GPa的静水压力。 在晶胞体积变化0.7%的过程中，体电导的活化能从0.62 eV增加到0.73 eV，证实了晶格体积与晶体结构中质子扩散率之间之前提出的相关性。 在未来陶瓷质子导体的发展中，一种值得尝试的策略可能是扩展晶格并在拉伸应变下潜在地降低活化能。 显示英文摘要

摘要： In-situ electrochemical impedance spectroscopy was used to study the effect of lattice volume and strain on the proton conductivity of the yttrium-doped barium cerate proton conductor by applying the hydrostatic pressure up to 1.25 GPa. An increase from 0.62 eV to 0.73 eV in the activation energy of the bulk conductivity was found with increasing pressure during a unit cell volume change of 0.7%, confirming a previously suggested correlation between lattice volume and proton diffusivity in the crystal lattice. One strategy worth trying in the future development of the ceramic proton conductors could be to expand the lattice and potentially lower the activation energy under tensile strain.