锂(药物)
电池(电)
离子电导率
分离器(采油)
法拉第效率
快离子导体
锂离子电池
储能
作者
Shaojie Chen,Junye Wang,Zhenyao Wei,Zhihua Zhang,Yonghong Deng,Xiayin Yao,Xin Xu
标识
DOI:10.1016/j.jpowsour.2019.05.040
摘要
A new crosslinked copolymer electrolyte is prepared with a simply method. The optimal electrolyte presents a maximum conductivity of 1.15 × 10−4 S cm−1 at 60 °C. Especially, this new electrolyte presents an outstanding electrochemical stability not only for a wide electrochemical window (0–5.1 V) but also for a long–term compatibility with the Li metal. Due to electrochemical stability, LiMn0.2Fe0.8PO4 is selected as cathode material cycling between 3 V and 4.25 V. Moreover, a convenient integration method is used in this work to enhance the interfacial contact between cathode and electrolyte. Finally, the all-solid-state battery LiMn0.2Fe0.8PO4/Li shows a maximum capacity of 161.1 mAh g−1 and an excellent capacity retention ratio of 94.5% after 100 cycles. This new crosslinked polymer electrolyte may provide useful insights for introducing high voltage cathode material rather than LiFePO4 only into solid polymer electrolytes system.
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