聚醚固体电解质锂电池放电性能研究

Performance of lithium polymer solid electrolyte battery

利用氧亚甲基连接的聚氧乙烯-聚氧丙烯多嵌段共聚物或氧亚甲基连接的聚氧乙烯多嵌段共聚物与高氯酸锂的络合物作电池的电解质,锂片作负极,几种含钒的化合物作正极,组装了全固态二次锂电池.研究了不同正极材料、不同电解质和不同温度对电池短路放电性能的影响以及电池的重复短路放电性能.研究表明,正极材料V_6O_(13)的性能优于Na_(1+x)V_3O_8;电解质(PEO)_n·LiClO_4的性能优于(PEO-PPO)_n·LiClO_4,这与它们的电导率分别为3.2×10^(-3)S·cm^(-1)和2.2×10^(-3)S·cm^(-1)是一致的.

A lithium battery has been constructed using LiClO4 complex of oxymethylene linked PEO or PEO-PPO as the electrolyte, V6O13 or Na1+x,V3O8 as the cathode,and lithium as the anode. The effect of cathode,electrolyse and temperature on the performance of the battery has been investigated in terms of the shortcircuit discharge. It is shown that V6O13 has a higher voltage and current than Na1+xV3O8 for the battery with (PEO-PPO), LiClO4 as electrolyte, and (PEO)x LiClO4 offers better performance than (PEO-PPO). LiClO4,that is consistent with their conductivity of 3. 2X 10-3S cm-1 and 2. 2X 10-3S cm-1 respectively.