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Performance of Lithium-Ion Battery with Tin-Phosphate Glass Anode and Its Characteristics
Yamauchi, Hideo,Park, Gumjae,Nagakane, Tomohiro,Honma, Tsuyoshi,Komatsu, Takayuki,Sakai, Tetsuo,Sakamoto, Akihiko The Electrochemical Society 2013 Journal of the Electrochemical Society Vol.160 No.10
<P>The performance of a lithium-ion battery (LiB) fabricated with a tin-phosphate glass anode was studied as well as the characteristics of the anode. It was confirmed that the total positive charge of Sn<SUP>2+</SUP> ions in the glass anode is compensated by a reaction with lithium during the first charge by forming tin crystals. It was observed after the first charge that the glass is converted into a nanocomposite in which the metallic crystals are embedded in an amorphous lithium phosphate matrix. A half-cell fabricated with the glass anode showed a reproducible capacity of 550 mAh/g at room temperature, which was much higher than that of the cell with a graphite anode. The cell also showed a steady capacity of 160 mAh/g even at −20°C with no deposition of lithium dendrites. A full-cell fabricated with the glass anode and LiMn<SUB>2</SUB>O<SUB>4</SUB> cathode showed a good life cycle performance at 60°C along with no degradation in its life cycle performance. The tin-phosphate glass is a promising candidate as a new anode material that realizes LiBs with a high energy density that can be used over a wide temperature range.</P>