摘要
用固相反应方法,成功地合成了具有交互生长结构的LixNayCoO2单相多晶系列样品.热电势测量表明,该系统的室温热电势比NaxCoO2体系约高出60μV/K.基于空穴载流子具有O2p特征,提出LixNayCoO2中额外的热电势来源于氧空穴的占位熵.
Polycrystalline samples of Li, Nay CoO2 with an intergrowth structure have been successfully synthesized by solid-state reaction. The measured thermopower of Lix Nay CoO2at room temperature is about 60 μV/K higher than that of Nax CoO2. Based upon the O2p characteristic for the mobile carriers, the origin of the increment in thermopower is interpreted in terms of the occupancy entropy of the O2p holes.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第3期1627-1631,共5页
Acta Physica Sinica
基金
教育部高等学校博士学科点专项科研基金(批准号:20040330563)
国家自然科学基金(批准号:10225417)资助的课题.通讯联系人.~~
