Electrical and electrochemical properties of Li2S-P2S5-P2O5 glass-ceramic electrolytes
Electrical and electrochemical properties of Li2S-P2S5-P2O5 glass-ceramic electrolytes
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DOI：
10.1016/j.jpowsour.2005.03.063
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发表时间：
2005-08-26
影响因子：
9.2
通讯作者：
Tatsumisago, M
中科院分区：
文献类型：
--
作者：
Ohtomo, T;Mizuno, F;Tatsumisago, M
研究了Li_2S-P_2S_5-P_2 O_5系玻璃陶瓷电解质的电学和电化学性能。80Li（2）S.（20-X）P（2）S（5）（.）采用机械球磨和热处理工艺制备了xP（2）O（5）（mol%）微晶玻璃。80Li（2）S（.）19P（2）S（5）（.）1 P（2）O（5）微晶玻璃在室温下具有7.4 × 10（-4）S cm（-1）的高锂离子电导率和34 U mol（-1）的低电导激活能。在Li_2S-P_2S_5硫化物体系中加入少量P_2O_5，降低了玻璃陶瓷电解质的电导率，提高了电解质的电化学稳定性。全固态In/LiCoO_2电池的80 Li（2）S（.）19P（2）S（5）（.）1 P（2）O（5）微晶玻璃作为固体电解质在室温下可用作锂二次电池。电池在10次循环中保持约100 mAh g（-1）的高放电容量。(c)2005 Elsevier B.V保留所有权利。
The electrical and electrochemical properties of the Li2S-P2S5-P2O5 glass-ceramic electrolytes were investigated. The 80Li(2)S. (20-X)P(2)S(5)(.)xP(2)O(5) (mol%) glass-ceramics were prepared by a mechanical milling and a subsequent heat treatment. The 80Li(2)S(.)19P(2)S(5) (.) 1P(2)O(5) glass-ceramic showed the high lithium ion conductivity of 7.4 x 10(-4) S cm(-1) at room temperature and the low activation energy of 34 U mol(-1) for conduction. The addition of a small amount of P2O5 to the Li2S-P2S5 sulfide system lowered the electronic conductivity and enhanced the electrochemical stability of the glass-ceramic electrolytes. All-solid-state In/LiCoO2 cells with the 80Li(2)S (.) 19P(2)S(5) (.) 1P(2)O(5) glass-ceramic as a solid electrolyte worked as lithium secondary batteries at room temperature. The cells maintained high discharge capacity of about 100 mAh g(-1) for 10 cycles. (c) 2005 Elsevier B.V All rights reserved.