摘要
本文准确测量了在 0—2.21 GPa 流体静压力下整体片状非晶 B_2O_3-0.7 Li_2O-0.7 LiCl-0.10Al_2O_3 及其粉末样品的离子电导率和激活体积。对整片非晶锂离子电导率的压力效应用离子迁移通道的物理图象给出初步的微观解释。对非晶粉末样品离子电导率的压力效应,则发现是由体电导率、接触电导率及同相界面电导率变化的综合结果。高压实验表明,同相界面效应可使离子电导率提高2.5～16倍,该非晶材料还有潜力可进一步提高其离子电导率。
Ionic conductivity and activation volume of the hulk piece and powder of a-morphous lithium ionic conductor B2O3-0. 7Li2O-0. 7LICt-0. 10Al2O3 were investigated in the hydrostatic pressure range from 0 to 2. 21 GPa. For the hydrostatic pressure dependence of ionic conductivity of the bulk piece, a preliminary microscopic explanation was given by considering the physical picture of ionic transport passages. Effect of hydrostatic pressure on ionic conductivity of the amorphous powder consists of three changes in bulk-conductivity. contact-conductivity and boundary layer-conductiity with the same phase. Specially the lat- ter can increase the ionic conductivity 2.5-16 times. The experimental results show that there is a possibility of further enhancing the ionic conductivity for above material.
出处
《高压物理学报》
CAS
CSCD
北大核心
1990年第4期263-269,共7页
Chinese Journal of High Pressure Physics
关键词
非晶态
锂离子
电导率
压力效应
ionic conductivity, hydrostatic high pressure, ionic transport passages
