Unique thermal conductivity, Young%26apos;s modulus and local structure of 72SnO-28P(2)O(5) glass

作者：Sakamoto Akihiko; Himei Yusuke; Shinozaki Kenji; Honma Tsuyoshi; Komatsu Takayuki

来源：Journal of the Ceramic Society of Japan, 2016, 124(5): 606-612.

DOI：10.2109/jcersj2.16007

• Tin phosphate glass
• Local structure
• Thermal conductivity
• Young's modulus
• Heat capacity
• Vickers hardness

Tin-phosphate (SnO-P2O5) glasses with high SnO contents have a high potential for new lead-free low-melting sealing frits, optical materials, and anode active materials for rechargeable lithium ion batteries (LIBs). The local structure (Raman scattering and Sn-119 Mossbauer spectra), some physical properties (specific heat and thermal conductivity), and elastic properties (Young's modulus and Vickers hardness) of 72SnO center dot 28P(2)O(5) glass were characterized to clarify the features of SnO-P2O5 glasses. The glass showed unique properties when compared with other phosphate glasses, i.e., small thermal diffusivity and conductivity, small Young's modulus, intense Boson peak, and unique local structure. 72SnO center dot 28P(2)O(5) glass has an open structure with a low packing density, in which a large number of Q(1) ((PO3.52-) and Q(0) (PO43-) units are formed. These structural features would be one of the main reasons for the fast diffusion of Li+ ions and result in the excellent LIB performance as anode materials of the glass.

• 出版日期2016-5